Select the correct statement from the ones given below with respect to Periplaneta americana. (a) Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives. (b) Males bear a pair of short thread like anal styles. (c) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut. (d) Grinding of food is carried out only by the mouth parts.

Select the correct statement from the ones given
below with respect to Periplaneta americana.
(a) Nervous system located dorsally, consists of
segmentally arranged ganglia joined by a pair of
longitudinal connectives.
(b) Males bear a pair of short thread like anal styles.
(c) There are 16 very long Malpighian tubules
present at the junctions of midgut and hindgut.
(d) Grinding of food is carried out only by the
mouth parts.
by

1 Answer

Answer :

(b) Males bear a pair of short thread like anal styles.
by

Related questions

Select the correct statement from the ones given below with respect to Periplaneta americana (1) Grinding of food is carried out only by the mouth parts (2) Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives (3) Males bear a pair of short thread like anal styles (4) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

Description : Select the correct statement from the ones given below with respect to Periplaneta americana (1) Grinding of food is carried out only by the mouth parts (2) Nervous system located dorsally, consists ... (4) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut

Last Answer : (3) Males bear a pair of short thread like anal styles

Select the correct option with respect to cockroaches. (a) Malpighian tubules convert nitrogenous wastes into urea. (b) Males bear short anal styles not present in females. (c) Nervous system comprises of a dorsal nerve cord and ten pairs of ganglia. (d) The forewings are tegmina which are used in fligh

Description : Select the correct option with respect to cockroaches. (a) Malpighian tubules convert nitrogenous wastes into urea. (b) Males bear short anal styles not present in females. (c) Nervous system comprises of a ... cord and ten pairs of ganglia. (d) The forewings are tegmina which are used in fligh

Last Answer : (b) Males bear short anal styles not present in females

Which of the following features is not present in Periplaneta americana? (a) Exoskeleton composed of N-acetylglucosamine (b) Metamerically segmented body (c) Schizocoelom as body cavity (d) Indeterminate and radial cleavage during embryonic development

Description : Which of the following features is not present in Periplaneta americana? (a) Exoskeleton composed of N-acetylglucosamine (b) Metamerically segmented body (c) Schizocoelom as body cavity (d) Indeterminate and radial cleavage during embryonic development

Last Answer : (a) Exoskeleton composed of N-acetylglucosamine

Match the following organisms with respective characteristics. (A) Pila (i) Flame cells (B) Bombyx (ii) Comb plates (C) Pleurobrachia (iii)Radula (D) Taenia (iv) Malpighian tubules Select the correct option from the following. (A) (B) (C) (D) (a) (iii) (ii) (iv) (i) (b) (iii) (ii) (i) (iv) (c) (iii) (iv) (ii) (i) (d) (ii) (iv) (iii) (i)

Description : Match the following organisms with respective characteristics. (A) Pila (i) Flame cells (B) Bombyx (ii) Comb plates (C) Pleurobrachia (iii)Radula (D) Taenia (iv) Malpighian tubules Select the correct option from the following. (A) (B) (C) ... (i) (iv) (c) (iii) (iv) (ii) (i) (d) (ii) (iv) (iii) (i)

Last Answer : (c) (iii) (iv) (ii) (i)

Assertion (A) : Periplaneta americana is nocturnal, omnivorous, household pest. Reason (R) : It is because it acts as scavenger. (a) A is true but R is false. (b) A is false but R is true. (c) Both A and R are true and R is correct explanation of A. (d) Both A and R are true but R is not correct explanation of A

Description : Assertion (A) : Periplaneta americana is nocturnal, omnivorous, household pest. Reason (R) : It is because it acts as scavenger. (a) A is true but R is false. (b) A is false but R is true. (c) Both ... R is correct explanation of A. (d) Both A and R are true but R is not correct explanation of A

Last Answer : (d) Both A and R are true but R is not correct explanation of A.

Periplaneta americana differs from Blatta orientalis in having

Description : Periplaneta americana differs from Blatta orientalis in having

Last Answer : Periplaneta americana differs from Blatta orientalis in having A. Well developed wings B. Wings ... wings develped D. Second pair wing developed

Match the items given in column I with those in column II and select the correct option given below. Column I Column II (Function) (Part of excretory system) A. Ultrafiltration (i) Henle’s loop B. Concentration (ii) Ureter of urine C. Transport of urine(iii) Urinary bladder D. Storage of urine (iv) Malpighian corpuscle (v) Proximal convoluted tubule A B C D (a) (iv) (v) (ii) (iii) (b) (iv) (i) (ii) (iii) (c) (v) (iv) (i) (ii) (d) (v) (iv) (i) (iii)

Description : Match the items given in column I with those in column II and select the correct option given below. Column I Column II (Function) (Part of excretory system) A. Ultrafiltration (i) Henle's loop B. Concentration (ii) Ureter of urine C. ... (ii) (iii) (c) (v) (iv) (i) (ii) (d) (v) (iv) (i) (iii)

Last Answer : (b) (iv) (i) (ii) (iii)

Which of the following happens in the common cockroach? (a) Malpighian tubules are excretory organs projecting out from the colon. (b) Oxygen is transported by haemoglobin in blood. (c) Nitrogenous excretory product is urea. (d) The food is ground by mandibles and gizzard.

Description : Which of the following happens in the common cockroach? (a) Malpighian tubules are excretory organs projecting out from the colon. (b) Oxygen is transported by haemoglobin in blood. (c) Nitrogenous excretory product is urea. (d) The food is ground by mandibles and gizzard.

Last Answer : (d) The food is ground by mandibles and gizzard.

Which one of the following is a matching pair of a body feature and the animal possessing it? (a) Ventral central – Leech nervous system (b) Pharyngeal gill slits – Chamaeleon absent in embryo (c) Ventral heart – Scorpion (d) Post-anal tail – Octopus

Description : Which one of the following is a matching pair of a body feature and the animal possessing it? (a) Ventral central – Leech nervous system (b) Pharyngeal gill slits – Chamaeleon absent in embryo (c) Ventral heart – Scorpion (d) Post-anal tail – Octopus

Last Answer : (a) Ventral central – Leech nervous system

Consider the following four statements (A–D) related to the common frog Rana tigrina, and select the correct option stating which ones are true (T) and which ones are false (F). Statements: A. On dry land it would die due to lack of O2 if its mouth is forcibly kept closed for a few days. B. It has four-chambered heart. C. On dry land it turns uricotelic from ureotelic. D. Its life-history is carried out in pond water. A B C D (a) T F F T (b) T T F F (c) F F T T (d) F T T F

Description : Consider the following four statements (A-D) related to the common frog Rana tigrina, and select the correct option stating which ones are true (T) and which ones are false (F). Statements: A. On dry land it would die due to lack of O2 if ... C D (a) T F F T (b) T T F F (c) F F T T (d) F T T F

Last Answer : (a) T F F T

Malpighian tubules are analogous to

Description : Malpighian tubules are analogous to

Last Answer : Malpighian tubules are analogous to A. Trachea of cockroach B. Gills C. Flame cells D. None of these

Funtion of Malpighian tubules of cockroach :

Description : Funtion of Malpighian tubules of cockroach :

Last Answer : Funtion of Malpighian tubules of cockroach : A. Digestion B. Respiration C. Excretion D. Reproduction

Which one of the following pairs of items correctly belongs to the category of organs mentioned against it? (a) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs (b) Wings of honeybee and wings of crow - homologous organs (c) Thorn of Bougainvillea and tendrils of Cucurbita - analogous organs (d) Nictitating membrane and blind spot in human eye - vestigial organs

Description : Which one of the following pairs of items correctly belongs to the category of organs mentioned against it? (a) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs ( ... Cucurbita - analogous organs (d) Nictitating membrane and blind spot in human eye - vestigial organs

Last Answer : (a) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs

.Malpighian tubules are (a) excretory organs of insects (b) excretory organs of annelids (c) respiratory organs of insects (d) respiratory organs of annelids.

Description : .Malpighian tubules are (a) excretory organs of insects (b) excretory organs of annelids (c) respiratory organs of insects (d) respiratory organs of annelids.

Last Answer : (a) excretory organs of insects

The excretory structures of flatworms/ Taenia are (a) flame cells (b) protonephridia (c) Malpighian tubules (d) green glands

Description : The excretory structures of flatworms/ Taenia are (a) flame cells (b) protonephridia (c) Malpighian tubules (d) green glands

Last Answer : (a) flame cells

In which one of the following organisms its excretory organs are correctly stated? (a) Humans – Kidneys, sebaceous glands and tear glands (b) Earthworm – Pharyngeal, integumentary and septal nephridia (c) Cockroach – Malpighian tubules and enteric caeca (d) Frog – Kidneys, skin and buccal epithelium

Description : In which one of the following organisms its excretory organs are correctly stated? (a) Humans - Kidneys, sebaceous glands and tear glands (b) Earthworm - Pharyngeal, integumentary and septal ... Cockroach - Malpighian tubules and enteric caeca (d) Frog - Kidneys, skin and buccal epithelium

Last Answer : (b) Earthworm – Pharyngeal, integumentary and septal nephridia

In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct? (a) Pila (i) Body segmented Mollusca (ii) Mouth with radula(b) Asterias (i) Spiny skinned Echinodermata (ii) Water vascular system (c) Sycon (i) Pore bearing Porifera (ii) Canal system (d) Periplaneta (i) Jointed appendages Arthropoda (ii) Chitinous exoskeleton

Description : In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct? (a) Pila (i) Body segmented Mollusca ... Porifera (ii) Canal system (d) Periplaneta (i) Jointed appendages Arthropoda (ii) Chitinous exoskeleton

Last Answer : (a) Pila (i) Body segmented Mollusca (ii) Mouth with radula

In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct? (a) Pila (i) Body segmented Mollusca (ii) Mouth with radula(b) Asterias (i) Spiny skinned Echinodermata (ii) Water vascular system (c) Sycon (i) Pore bearing Porifera (ii) Canal system (d) Periplaneta (i) Jointed appendages Arthropoda (ii) Chitinous exoskeleton

Description : In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct? (a) Pila (i) Body segmented Mollusca ... Porifera (ii) Canal system (d) Periplaneta (i) Jointed appendages Arthropoda (ii) Chitinous exoskeleton

Last Answer : (a) Pila (i) Body segmented Mollusca (ii) Mouth with radula

A longitudinal tear or ulceration in the lining of the anal canal is termed a (an) a) anal fissure. Fissures are usually caused by the trauma of passing a large, firm stool or from persistent tightening of the anal canal secondary to stress or anxiety (leading to constipation). b) anorectal abscess. An anorectal abscess is an infection in the pararectal spaces. c) anal fistula. An anal fistula is a tiny, tubular, fibrous tract that extends into the anal canal from an opening located beside the anus. d) hemorrhoid. A hemorrhoid is a dilated portion of vein in the anal canal.

Description : A longitudinal tear or ulceration in the lining of the anal canal is termed a (an) a) anal fissure. Fissures are usually caused by the trauma of passing a large, firm stool or from persistent ... beside the anus. d) hemorrhoid. A hemorrhoid is a dilated portion of vein in the anal canal.

Last Answer : a) anal fissure. Fissures are usually caused by the trauma of passing a large, firm stool or from persistent tightening of the anal canal secondary to stress or anxiety (leading to constipation).

Select the correct option. (a) There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs. (b) 8th, 9th and 10th pairs of ribs articulate directly with the sternum. (c) 11th and 12th pairs of ribs are connected to the sternum with the help of hyaline cartilage. (d) Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum

Description : Select the correct option. (a) There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs. (b) 8th, 9th and 10th pairs of ribs articulate ... bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum

Last Answer : (a) There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.

Out of ‘X ’ pairs of ribs in humans only ‘Y ’ pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation. (a) X = 12, Y = 5 True ribs are attached dorsally to vertebral column and sternum on the two ends (b) X = 24, Y = 2 The true ribs are dorsally attached to vertebral column but are free on ventral side(c) X = 24, Y = 12True ribs are dorsally attached to vertebral column but are free on ventral side (d) X = 12, Y = 7 True ribs are attached dorsally to vertebral column and ventrally to the sternum

Description : Out of X ' pairs of ribs in humans only Y ' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation. (a) X = 12, Y = 5 True ribs are ... (d) X = 12, Y = 7 True ribs are attached dorsally to vertebral column and ventrally to the sternum

Last Answer : (d) X = 12, Y = 7 True ribs are attached dorsally to vertebral column and ventrally to the sternum

Anal styles are found in :

Description : Anal styles are found in :

Last Answer : Anal styles are found in : A. Housefly B. Female cockroach C. Male cockroach D. Both male & female cockroach

Male and female cockroaches can be distinguished externally through (a) anal styles in male (b) anal cerci in female (c) anal style and antennae in females (d) both (b) and (c).

Description : Male and female cockroaches can be distinguished externally through (a) anal styles in male (b) anal cerci in female (c) anal style and antennae in females (d) both (b) and (c).

Last Answer : (a) anal styles in male

Which of the following features is used to identify a male cockroach from a female cockroach? (a) Presence of a boat-shaped sternum on the 9th abdominal segment (b) Presence of caudal styles (c) Forewings with darker tegmina (d) Presence of anal cerci

Description : Which of the following features is used to identify a male cockroach from a female cockroach? (a) Presence of a boat-shaped sternum on the 9th abdominal segment (b) Presence of caudal styles (c) Forewings with darker tegmina (d) Presence of anal cerci

Last Answer : (b) Presence of caudal styles

Which of the following features is used to identify a male cockroach from a female cockroach ? (1) Presence of a boat shaped sternum on the 9th abdominal segment (2) Presence of caudal styles (3) Forewings with darker tegmina (4) Presence of anal cerci

Description : Which of the following features is used to identify a male cockroach from a female cockroach ? (1) Presence of a boat shaped sternum on the 9th abdominal segment (2) Presence of caudal styles (3) Forewings with darker tegmina (4) Presence of anal cerci

Last Answer : (2) Presence of caudal styles

With regard to the autonomic nervous system: a. the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves b. the preganglionic sympathetic fibres are usually longer than preganglionic parasympathetic fibres c. acetylcholine is the neurotransmitter at the ganglia of both sympathetic and parasympathetic nervous system d. botulin toxin blocks acetylcholine receptors

Description : With regard to the autonomic nervous system: a. the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves b. the preganglionic sympathetic fibres ... the ganglia of both sympathetic and parasympathetic nervous system d. botulin toxin blocks acetylcholine receptors

Last Answer : the dorsal root ganglia is made up mainly of the cell bodies of the sympathetic nerves

If the head of cockroach is removed, it may live for few days because (a) the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen (b) the cockroach does not have nervous system(c) the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body (d) the head holds a 1/3rd of a nervous system while the rest is situated along the dorsal part of its body.

Description : If the head of cockroach is removed, it may live for few days because (a) the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen (b) the cockroach does not have nervous ... a 1/3rd of a nervous system while the rest is situated along the dorsal part of its body.

Last Answer : (c) the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body

Which one of the following is the correct statement for respiration in humans? (a) Cigarette smoking may lead to inflammation of bronchi. (b) Neural signals from pneumotoxic centre in pons region of brain can increase the duration of inspiration. (c) Workers in grinding and stone-breaking industries may suffer from lung fibrosis. (d) About 90% of carbon dioxide (CO2) is carried by haemoglobin as carbamino-haemoglobin.

Description : Which one of the following is the correct statement for respiration in humans? (a) Cigarette smoking may lead to inflammation of bronchi. (b) Neural signals from pneumotoxic centre in pons region ... . (d) About 90% of carbon dioxide (CO2) is carried by haemoglobin as carbamino-haemoglobin.

Last Answer : (c) Workers in grinding and stone-breaking industries may suffer from lung fibrosis.

Which one of the following is the correct statement for respiration in humans ? (1) About 90% of carbon dioxide (CO2 ) is carried by haemoglobin as carbamino-haemoglobin (2) Cigarette smoking may lead to inflammation of bronchi (3) Neural signals from pneumotoxic centre in pons region of brain can increase the duration of inspiration (4) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis.

Description : Which one of the following is the correct statement for respiration in humans ? (1) About 90% of carbon dioxide (CO2 ) is carried by haemoglobin as carbamino-haemoglobin (2) Cigarette smoking ... of inspiration (4) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis.

Last Answer : (4) Workers in grinding and stone-breaking industries may suffer, from lung fibrosis.

Which one of the following is one of the paths followed by air or O2 during respiration in the adult male Periplaneta  americana as it enters the animal body? (a) Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells (b) Mouth, bronchial tube, trachea, oxygen enters cells (c) Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells (d) Hypopharynx, mouth, pharynx, trachea, tissues

Description : Which one of the following is one of the paths followed by air or O2 during respiration in the adult male Periplaneta  americana as it enters the animal body? (a) Spiracle in ... prothorax, tracheoles, trachea, oxygen diffuses into cells (d) Hypopharynx, mouth, pharynx, trachea, tissues

Last Answer : (a) Spiracle in metathorax, trachea, tracheoles, oxygen diffuses into cells

Study the four statement (i-iv) given below and select the two correct ones out of them (i) A lion eating a deer and a sparrow feeding or grains are e

Description : Study the four statement (i-iv) given below and select the two correct ones out of them (i) A lion eating a deer and a sparrow feeding or grains are e

Last Answer : Study the four statement (i-iv) given below and select the two correct ones out of them (i) A lion eating a deer ... . A and B C. B and C D. C and D

Select the correct statement from the ones given below. (a) Barbiturates, when given to criminals, make them tell the truth. (b) Morphine is often given to persons, who have undergone surgery, as a pain killer. (c) Chewing tobacco lowers blood pressure and heart rate. (d) Cocaine is given to patients after surgery as it stimulates recovery.

Description : Select the correct statement from the ones given below. (a) Barbiturates, when given to criminals, make them tell the truth. (b) Morphine is often given to persons, who have undergone surgery, ... pressure and heart rate. (d) Cocaine is given to patients after surgery as it stimulates recovery.

Last Answer : (b) Morphine is often given to persons, who have undergone surgery, as a pain killer.

Muscarinic cholinergic receptors (a) Are located only on parasympathetically innervated effector cells (b) Mediate responses by opening an instrinsic Na+ ion channel (c) Are present on vascular endothelium which has no cholinergic nerve supply (d) Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors (a) Are located only on parasympathetically innervated effector cells (b) Mediate responses by opening an instrinsic Na+ ion channel (c) Are present on vascular endothelium which has no cholinergic nerve supply (d) Predominate in the autonomic ganglia

Last Answer : Ans: C

Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Last Answer : C. Are present on vascular endothelium which has no cholinergic nerve supply

Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Description : Muscarinic cholinergic receptors: A. Are located only on parasympathetically innervated effector cells B. Mediate responses by opening an intrinsic Na+ ion channel C. Are present on vascular endothelium which has no cholinergic nerve supply D. Predominate in the autonomic ganglia

Last Answer : C. Are present on vascular endothelium which has no cholinergic nerve supply

Which of the following statement(s) is/are correct concerning cell junctions? a. The major occluding junction is the tight junction or zonula occludens b. Tight junctions are usually located near the basal pole of the cell c. Desmosomes are button-like points of attachment which serve to weld together adjacent cells d. Gap junctions are a type of cell junction specialized for cell communication

Description : Which of the following statement(s) is/are correct concerning cell junctions? a. The major occluding junction is the tight junction or zonula occludens b. Tight junctions are usually located near ... adjacent cells d. Gap junctions are a type of cell junction specialized for cell communication

Last Answer : Answer: a, c, d Cell junctions are classified as occluding, anchoring, and communicating. The major occluding junction is the tight junction or zonula occludens which connects ... gap junction which is specialized for communication. This junction mediates both electrical and chemical coupling

Study the four statements (A-D) given below and select the two correct ones out of them. A. Definition of biological species was given by Ernst Mayr. B. Photoperiod does not affect reproduction in plants. C. Binomial nomenclature system was given by R.H. Whittaker. D. In unicellular organisms, reproduction is synonymous with growth. The two correct statements are (a) B and C (b) C and D (c) A and D (d) A and B.

Description : Study the four statements (A-D) given below and select the two correct ones out of them. A. Definition of biological species was given by Ernst Mayr. B. Photoperiod does not affect reproduction in plants. C. Binomial nomenclature ... are (a) B and C (b) C and D (c) A and D (d) A and B.

Last Answer : (c) A and D

Pick up the correct statement from the following: (A) The substance which consists of one primary chemical, is known as monomer (B) The polymer consists of thousands of monomers joined together (C) The polymer molecule is called macro-molecule (D) All the above

Description : Pick up the correct statement from the following: (A) The substance which consists of one primary chemical, is known as monomer (B) The polymer consists of thousands of monomers joined together (C) The polymer molecule is called macro-molecule (D) All the above

Last Answer : Answer: Option D

Match Column-I with Column-II and select the correct answer with respect to hybridisation using the codes given below .

Description : Match Column-I with Column-II and select the correct answer with respect to hybridisation using the codes given below .

Last Answer : Match Column-I with Column-II and select the correct answer with respect to hybridisation using the codes given below . A ... )","(IV)"),(q,p,s,r):}`

Which of the following statements are correct in respect of Niti Aayog? (a) It is a constitutional body. (b) It is a statutory body. (c) It is neither a constitutional body nor a statutory body. (d) It is a think-tank. Select the correct answer from the codes given below: (A) (a) and (d) (B) (b) and (d) (C) (c) and (d) (D) (b), (c) and (d)

Description : Which of the following statements are correct in respect of Niti Aayog? (a) It is a constitutional body. (b) It is a statutory body. (c) It is neither a constitutional body nor a statutory body. (d) It is a think-tank. Select the ... (d) (B) (b) and (d) (C) (c) and (d) (D) (b), (c) and (d)

Last Answer : Answer: C 

Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines? (A) Compartment mill (B) Rod mill (C) Pebble mill (D) Tube mill

Description : Which of the following grinding mills has the horizontally arranged rods as the grinding elements thereby delivering more uniform granular products with minimum fines? (A) Compartment mill (B) Rod mill (C) Pebble mill (D) Tube mill

Last Answer : (B) Rod mill

Which of the following substances are found in the beach sands of many parts of Kerala? 1. Ilmenite 2. Zircon 3. Silimanite 4. Tungsten Select the correct answer using the code given below: [IAS 2006] (a) 1, 2, 3 and 4 (b) 1, 2 and 3 (c) 3 and 4 only (d) 1 and 2 only

Description : Which of the following substances are found in the beach sands of many parts of Kerala? 1. Ilmenite 2. Zircon 3. Silimanite 4. Tungsten Select the correct answer using the code given below: [IAS 2006] (a) 1, 2, 3 and 4 (b) 1, 2 and 3 (c) 3 and 4 only (d) 1 and 2 only

Last Answer : Ans: (b)

Besides grinding what are some other methods used to thread ball screws?

Description : Besides grinding what are some other methods used to thread ball screws?

Last Answer : Besides grinding, another method is recirculating ball nut and shaft assembly. This method rolled thread ball screws cost less than ground ball screws but deliver virtually the same accuracy and performance You used ... to have a die with the correct width and pitch (the angle of the threading).

Select the correct sequence for transport of sperm cells in male reproductive system. (a) Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → Urethral meatus (b) Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra (c) Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus (d) Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra

Description : Select the correct sequence for transport of sperm cells in male reproductive system. (a) Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → ... → Urethral meatus (d) Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra

Last Answer : (c) Seminiferous tubules → Rete testis → Vasa efferentia → Epididymis → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus

Given below is a diagrammatic sketch of a portion of human male reproductive system . Select the correct set of the names of the parts labelled . A ,

Description : Given below is a diagrammatic sketch of a portion of human male reproductive system . Select the correct set of the names of the parts labelled . A ,

Last Answer : Given below is a diagrammatic sketch of a portion of human male reproductive system . Select the correct ... , "Bulbourethral gland" , "Prostate"):}`