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)
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
Description : $ The excretory organs of Flatworms are called Flame cells. ! Excretory cells help in endocytosis.
Last Answer : $ The excretory organs of Flatworms are called Flame cells. ! Excretory cells help in endocytosis. A. If ... wrong D. If both As and R are wrong.
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
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.
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
Description : Flame cells (solenocytes) are excretory structures of
Last Answer : Flame cells (solenocytes) are excretory structures of A. Annelida B. Arthropoda C. Flat worms D. Crustaceans (prawn)
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
Description : Funtion of Malpighian tubules of cockroach :
Last Answer : Funtion of Malpighian tubules of cockroach : A. Digestion B. Respiration C. Excretion D. Reproduction
Description : 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 ... midgut and hindgut. (d) Grinding of food is carried out only by the mouth parts.
Last Answer : (b) Males bear a pair of short thread like anal styles.
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
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
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)
Description : Is the nervous system in platyhelminthes more or less sophisticated than in cnidarians? What are the main neural structures found in flatworms? How is this neural organization important for the diversity of biological niches explored by species of the phylum?
Last Answer : Platyhelminthes present a more sophisticated nervous system than cnidarians, as the first neural chords with ganglia (grouping of neurons) appear, a characteristic of the evolutionary process of ... that are parasites and those that are free-living. Image Diversity: platyhelminth nervous system
Description : Antennary or green glands which are excretory and osmoregulatory organs of crustacean consist of
Last Answer : Antennary or green glands which are excretory and osmoregulatory organs of crustacean consist of A. ... C. Antenna D. Lateral and transverse ducts
Description : Select the option which shows correct matching of animal with its excretory organ and excretory product. Animal Excretory Excretory organ product (a) Labeo (Rohu) Nephridial Ammonia tubes (b) Salamander Kidneys Urea (c) Peacock Kidneys Urea (d) Housefly Renal tubules Uric acid
Last Answer : (b) Salamander Kidneys Urea
Description : The tissue present in the lining of kidney tubules and ducts of salivary glands is -Science
Last Answer : Cuboidal epithelium
Description : Bowman’s glands are located in the (a) anterior pituitary (b) female reproductive system of cockroach (c) olfactory epithelium of our nose (d) proximal end of uriniferous tubules.
Last Answer : (c) olfactory epithelium of our nose
Description : Which of the following structures present in mammalian skin directly helps in keeping the body warm? (1) Pigmented cells (2) Sweat glands (3) Lymph vessels (4) Blood capillaries
Last Answer : (2) Sweat glands Explanation: In the skin, two types of glands are present.
Last Answer : (3) Lymph vessels Explanation: The lymphatic system consists of a network of specialized lymphatic vessels and various tissues and organs throughout the body that contain lymphocytes (White Blood Cells) and ... skin and in the deeper fatty tissues near the muscles and can be found near arteries.
Description : Which of the following structures present in mammalian skin directly helps in keeping the body warm ? (1) Pigmented cells (2) Sweat glands (3) Lymph vessels (4) Blood capillaries
Last Answer : Lymph vessels
Description : Four healthy people in their twenties got involved in injuries resulting in damage and death of few cells of the following. Which of the cells are least likely to be replaced by new cells? (a) Liver cells (b) Neurons (c) Malpighian layer of the skin (d) Osteocytes
Last Answer : (b) Neurons
Description : What are the excretory structures of flat worms?
Last Answer : Flame cells
Description : Solenocytes are the main excretory structures in (a) echinodermates (b) platyhelminthes (c) annelids (d) molluscs.
Last Answer : (b) platyhelminthes
Description : Match the following structures with their respective location in organs. (A) Crypts of Lieberkuhn (i) Pancreas (B) Glisson's Capsule (ii) Duodenum (C) Islets of Langerhans (iii) Small intestine (D) Brunner's Glands (iv) Liver Select the ... ii) (iv) (c) (ii) (iv) (i) (iii) (d) (iii) (iv) (i) (ii)
Last Answer : (d) (iii) (iv) (i) (ii)
Description : All flatworms differ from all round worms in having
Last Answer : All flatworms differ from all round worms in having A. Solid mesoderm B. Triploblastic body C. Bilateral symmetry D. Metamorphosis in the life history
Description : Are flatworms monoecious or dioecious?
Last Answer : There are monoecious hermaphrodite flatworms, like planarias and taenias, and there are dioecious (having male and female individuals) species too, like schistosomes.
Description : How is gas exchange done in flatworms?
Last Answer : Platyhelminthes exchange gases exclusively by diffusion through their body surface. This is only possible because all cells are localized relatively near to the exterior since gases diffuse cell by cell (the flat shape of these worms is a feature that allows this type of respiration).
Description : The name helminth is usually applied to Parasitic and non-parasitic species of D A. Flatworms B. Tapeworms C. Roundworms D. All of above
Last Answer : All of above
Description : Phylum Platyhelminthes includes B A. Round worms B. Flatworms C. Thorny headed worms D. All of above
Last Answer : Flatworms
Description : Which one of the following statements about certain given animals is correct? (a) Roundworms (Aschelminthes) are pseudo- coelomates. (b) Molluscs are acoelomates. (c) Insects are pseudocoelomates. (d) Flatworms (Platyhelminthes) are
Last Answer : (a) Roundworms (Aschelminthes) are pseudo- coelomates.
Description : Which one of the following kinds of animals are triploblastic? (a) Flatworms (b) Sponges (c) Ctenophores (d) Corals
Last Answer : (a) Flatworms
Description : To which biological phylum do the flatworms belong?
Last Answer : ANSWER: PLATYHELMINTHES
Description : Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to? -Biology
Last Answer : The green dot-like structures in some cells observed by a student when a leaf peel is viewed under a microscope are chloroplasts. The green colour is due to the presence of green pigment, chlorophyll.
Description : Connective tissue around seminiferous tubules possess endocrine cells called
Last Answer : Connective tissue around seminiferous tubules possess endocrine cells called A. leydig cells B. Sertoli cells C. Primary germ cells D. Both A and B
Description : The nutritive cells found in seminiferous tubules are:
Last Answer : The nutritive cells found in seminiferous tubules are: A. Leydig cells B. Sertolic ells C. Atretic follicular cells D. Chromaffin cells.
Description : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous tubules lined with male germ cells and sertoli ce
Last Answer : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous ... . If both Assertion & Reason are False.
Description : Androgens are synthesised in (A) Leydig cells in testes (B) Sertoli cells in testes (C) Seminiferous tubules (D) Prostate gland
Last Answer : Answer : A
Description : The difference between spermiogenesis and spermiation is (a) in spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed (b) in spermiogenesis spermatozoa are formed, ... in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules
Last Answer : (d) in spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.
Description : Sertoli cells are found in (a) ovaries and secrete progesterone (b) adrenal cortex and secrete adrenaline (c) seminiferous tubules and provide nutrition to germ cells (d) pancreas and secrete cholecystokinin.
Last Answer : (c) seminiferous tubules and provide nutrition to germ cells
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
Description : Which of the following would help in prevention of diuresis? (a) More water reabsorption due to undersecretion of ADH. (b) Reabsorption of Na+ and water from renal tubules due to ... Atrial natriuretic factor causes vasoconstriction. (d) Decrease in secretion of renin by JG cells. (NEE
Last Answer : (b) Reabsorption of Na+ and water from renal tubules due to aldosterone.
Description : Prolonged testosterone therapy can cause: A. Hypertrophy of seminiferous tubules of testes B. Hypertrophy of interstitial cells of testes C. Atrophy of interstitial cells of testes D. Both ‘A’ and ‘B’ are correct
Last Answer : C. Atrophy of interstitial cells of testes
Description : Glucose entry into the cells of the following organ/ tissue is highly dependent on the presence of insulin: A. Brain B. Liver C. Adipose tissue D. Kidney tubules
Last Answer : C. Adipose tissue
Description : The difference between spermiogenesis and spermiation is (1) In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed. (2) In spermiogenesis spermatozoa are formed, ... in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.
Last Answer : (4) In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from Sertoli cells into the cavity of seminiferous tubules.
Description : Malpighian tube ?
Last Answer : : The number of narrow ducts adjacent to the digestive tract of grasshopper , which completes the excretory function is called Malpighian duct.
Description : What is Malpighian Organ ?
Last Answer : : Malpighian organ: The anterior end of the nephron is called the renal corpuscle or Malpighian organ. It consists of bomans capsule and glomerulus.
Description : Malpighian corpuslces occur in
Last Answer : Malpighian corpuslces occur in A. Medulla oblongata B. Cortex C. Pelvis D. Pyramid
Description : Malpighian corpuscles are present in
Last Answer : Malpighian corpuscles are present in A. Cortex B. Medulla C. Germinal cells D. None of them
Description : Addis test is the measure of (A) Impairment of the capacity of the tubule to perform osmotic work (B) Secretory function of liver (C) Excretory function of liver (D) Activity of parenchymal cells of liver
Last Answer : A