Tyloses are: (a) Lactiferous channels (b) Secretory cells (c) Sieve plates (d) Tracheal plugs plugging the lumen of vessels and tracheids

Tyloses are: (a) Lactiferous channels (b) Secretory cells (c) Sieve plates (d) Tracheal plugs plugging the lumen of vessels and tracheids
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The balloon-shaped structures called tyloses (a) originate in the lumen of vessels (b) characterise the sapwood (c) are extensions of xylem parenchyma cells into vessels (d) are linked to the ascent of sap through xylem vessels.

Description : The balloon-shaped structures called tyloses (a) originate in the lumen of vessels (b) characterise the sapwood (c) are extensions of xylem parenchyma cells into vessels (d) are linked to the ascent of sap through xylem vessels.

Last Answer : (c) are extensions of xylem parenchyma cells into vessels

Which of the following statements is true? (a) Vessels are multicellular with wide lumen. (b) Tracheids are multicellular with narrow lumen. (c) Vessels are unicellular with narrow lumen. (d) Tracheids are unicellular with wide lumen.

Description : Which of the following statements is true? (a) Vessels are multicellular with wide lumen. (b) Tracheids are multicellular with narrow lumen. (c) Vessels are unicellular with narrow lumen. (d) Tracheids are unicellular with wide lumen.

Last Answer : (a) Vessels are multicellular with wide lumen

Which of the following statements is true? (a) Vessels are multicellular with wide lumen. (b) Tracheids are multicellular with narrow lumen. (c) Vessels are unicellular with narrow lumen. (d) Tracheids are unicellular with wide lumen.

Description : Which of the following statements is true? (a) Vessels are multicellular with wide lumen. (b) Tracheids are multicellular with narrow lumen. (c) Vessels are unicellular with narrow lumen. (d) Tracheids are unicellular with wide lumen.

Last Answer : (a) Vessels are multicellular with wide lumen.

Why tracheids are less efficient than vessels in conduction

Description : Why tracheids are less efficient than vessels in conduction

Last Answer : Ans: Tracheids do not have uniform diameter, overlapped on each other at the ends and have solid cross walls. Vessels have uniform diameter, perforated cross walls and their elements are not overlapped but arranged one above the other. 

An organised and differentiated cellular structure having cytoplasm but no nucleus is (a) vessels (b) xylem parenchyma (c) sieve tubes (d) tracheids.

Description : An organised and differentiated cellular structure having cytoplasm but no nucleus is (a) vessels (b) xylem parenchyma (c) sieve tubes (d) tracheids.

Last Answer : (c) sieve tubes

An organised and differentiated cellular structure having cytoplasm but no nucleus is (a) vessels (b) xylem parenchyma (c) sieve tubes (d) tracheids.

Description : An organised and differentiated cellular structure having cytoplasm but no nucleus is (a) vessels (b) xylem parenchyma (c) sieve tubes (d) tracheids.

Last Answer : (c) sieve tubes

Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following. (a) Tyloses in vessels (b) Closure of stomata (c) Flaccidity of bulliform cells (d) Shrinkage of air spaces in spongy mesophyll

Description : Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following. (a) Tyloses in vessels (b) Closure of stomata (c) Flaccidity of bulliform cells (d) Shrinkage of air spaces in spongy mesophyll

Last Answer : (c) Flaccidity of bulliform cells

Assertion:- Smooth endoplasmic reticulum is frequently observed in protein secretory cells. Reason:- Lumen of smooth endoplasmic reticulum is the only

Description : Assertion:- Smooth endoplasmic reticulum is frequently observed in protein secretory cells. Reason:- Lumen of smooth endoplasmic reticulum is the only

Last Answer : Assertion:- Smooth endoplasmic reticulum is frequently observed in protein secretory cells. Reason:- Lumen ... If both Assertion & Reason are false.

Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.

Description : Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.

Last Answer : (d) sieve elements.

Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.

Description : Transport of food material in higher plants takes place through (a) companion cells (b) transfusion tissue (c) tracheids (d) sieve elements.

Last Answer : d) sieve elements.

Which type of diarrhea is caused by increased production and secretion of water and electrolyes by the intestinal mucosa into the intestinal lumen? a) Secretory diarrhea Secretory diarrhea is usually high volume diarrhea and is caused by increased production and secretion of water and electrolytes by the intestinal mucosa into the intestinal lumen.

Description : Which type of diarrhea is caused by increased production and secretion of water and electrolyes by the intestinal mucosa into the intestinal lumen? a) Secretory diarrhea Secretory diarrhea is usually ... bowel. d) Diarrheal disease The most common cause of diarrheal disease is contaminated food.

Last Answer : a) Secretory diarrhea Secretory diarrhea is usually high volume diarrhea and is caused by increased production and secretion of water and electrolytes by the intestinal mucosa into the intestinal lumen.

Alveoli are unable to receive full oxygen due to flattering of tracheal and broachial vessels in

Description : Alveoli are unable to receive full oxygen due to flattering of tracheal and broachial vessels in

Last Answer : Alveoli are unable to receive full oxygen due to flattering of tracheal and broachial vessels in A. Bronchitis B. Asthma C. Emphysema D. Pneumonia

Differentiate laticiferous vessels and cells.

Description : Differentiate laticiferous vessels and cells.

Last Answer : Ans: laticiferous cell is smaller, less efficient and coenocyte. Laticiferous vessel is formed by the union of latex cells. It is more efficient and called as syncytium.

Sieve tubes are suited for translocation of food because they possess (a) bordered pits (b) no end walls (c) broader lumen and perforated cross walls (d) no protoplasm

Description : Sieve tubes are suited for translocation of food because they possess (a) bordered pits (b) no end walls (c) broader lumen and perforated cross walls (d) no protoplasm

Last Answer : (c) broader lumen and perforated cross walls

Sieve tubes are suited for translocation of food because they possess (a) bordered pits (b) no end walls (c) broader lumen and perforated cross walls (d) no protoplasm

Description : Sieve tubes are suited for translocation of food because they possess (a) bordered pits (b) no end walls (c) broader lumen and perforated cross walls (d) no protoplasm

Last Answer : (c) broader lumen and perforated cross walls

Which of the following plant cells will show totipotency? (a) Sieve tubes (b) Xylem vessels (c) Meristem (d) Cork cells

Description : Which of the following plant cells will show totipotency? (a) Sieve tubes (b) Xylem vessels (c) Meristem (d) Cork cells

Last Answer : (c) Meristem

Which of the following plant cells will show totipotency? (a) Sieve tubes (b) Xylem vessels (c) Meristem (d) Cork cells

Description : Which of the following plant cells will show totipotency? (a) Sieve tubes (b) Xylem vessels (c) Meristem (d) Cork cells

Last Answer : (c) Meristem

What are xylem vessels and tracheids?

Description : What are xylem vessels and tracheids?

Last Answer : Xylem vessels consist of series of elongated dead cells joined together forming end to end tube like structure for conduction of water and salts

The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids.

Description : The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids.

Last Answer : (d) tracheids.

The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids

Description : The chief water conducting elements of xylem in gymnosperms are (a) vessels (b) fibres (c) transfusion tissue (d) tracheids

Last Answer : d) tracheids.

CCK is secreted in (a) Lumen of intestine (b) Pits of intestine (c)Blood of vessels of intestine (d) None

Description : CCK is secreted in (a) Lumen of intestine (b) Pits of intestine (c)Blood of vessels of intestine (d) None

Last Answer : (c)Blood of vessels of intestine

Besides giving out secretory vesicles, the Golgi apparatus is also concerned with the formation of (a) lysosomes (b) plastids (c) grana of chloroplasts (d) cell plates after cell division in plants.

Description : Besides giving out secretory vesicles, the Golgi apparatus is also concerned with the formation of (a) lysosomes (b) plastids (c) grana of chloroplasts (d) cell plates after cell division in plants.

Last Answer : (a) lysosomes

Wood without xylem vessels are called as

Description : Wood without xylem vessels are called as

Last Answer : Wood without xylem vessels are called as – Soft wood

Which of the following statements is/are true regarding requirements for receptacle outlets aboard vessels? A. Each receptacle outlet operating at 100 volts or more must have a grounding pole. B. Outlets connecting a lifeboat and the vessel's electrical system must have threaded plugs. C. Machinery spaces must contain sufficient outlets for lighting all machinery with a portable light having a 50 foot flexible cord. D. All of the above.

Description : Which of the following statements is/are true regarding requirements for receptacle outlets aboard vessels? A. Each receptacle outlet operating at 100 volts or more must have a grounding pole. B. Outlets ... machinery with a portable light having a 50 foot flexible cord. D. All of the above.

Last Answer : Answer: A

Which of the following equipments is not used for gas dispersion? (A) Agitated vessels (B) Bubble cap tray towers (C) Perforated sieve tray towers (D) Spray towers

Description : Which of the following equipments is not used for gas dispersion? (A) Agitated vessels (B) Bubble cap tray towers (C) Perforated sieve tray towers (D) Spray towers

Last Answer : (D) Spray towers

Which of the following terms refers to enlarged, red, and tender lymph nodes? a) Lymphadenitis Acute lymphadenitis is demonstrated by enlarged, red and tender lymph nodes. b) Lymphangitis Lymphangitis is an acute inflammation of the lymphatic channels. c) Lymphedema Lymphedema is demonstrated by swelling of tissues in the extremities because of an increased quantity of lymph that results from an obstruction of lymphatic vessels. d) Elephantiasis Elephantiasis refers to a condition in which chronic swelling of the extremity recedes only slightly with elevation.

Description : Which of the following terms refers to enlarged, red, and tender lymph nodes? a) Lymphadenitis Acute lymphadenitis is demonstrated by enlarged, red and tender lymph nodes. b) Lymphangitis ... refers to a condition in which chronic swelling of the extremity recedes only slightly with elevation.

Last Answer : a) Lymphadenitis Acute lymphadenitis is demonstrated by enlarged, red and tender lymph nodes.

A long-term effect of which of the following procedures post acute MI induces angioneogenesis? a) Transmyocardial laser revascularization TNR procedures usually involves making 20 to 40 channels in ventricular muscle. It is thought that some blood flows into the channels, decreasing the ischemia directly. Within the next few days to months, the channels close as a result of the body’s inflammatory process of healing a wound and new blood vessels form as a result of the inflammatory process.

Description : A long-term effect of which of the following procedures post acute MI induces angioneogenesis? a) Transmyocardial laser revascularization TNR procedures usually involves making 20 to 40 channels in ventricular muscle. ... e.g., clopidigrel [Plavix]) therapy for 2 weeks and lifetime use of aspirin).

Last Answer : a) Transmyocardial laser revascularization TNR procedures usually involves making 20 to 40 channels in ventricular muscle. It is thought that some blood flows into the channels, decreasing the ischemia directly. ... healing a wound and new blood vessels form as a result of the inflammatory process.

Ergotamine relieves migraine by: A. Blocking vascular α adrenergic receptors B. Blocking vascular 5-HT2 receptors C. Dilating cranial arterio-venous shunt channels D. Constricting cranial vessels and reducing perivascular neurogenic inflammation

Description : Ergotamine relieves migraine by: A. Blocking vascular α adrenergic receptors B. Blocking vascular 5-HT2 receptors C. Dilating cranial arterio-venous shunt channels D. Constricting cranial vessels and reducing perivascular neurogenic inflammation

Last Answer : D. Constricting cranial vessels and reducing perivascular neurogenic inflammation

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

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

What are some examples of secretory cells ?

Description : What are some examples of secretory cells ?

Last Answer : Endocrine and exocrine pancreatic cells, thyroid and parathyroid endocrine cells, adenohypophysis, adrenal and pineal endocrine cells, the many types of gastric exocrine and endocrine cells, the mucous secretory cells ... of the ovaries and testicles, etc., are all examples of secretory cells.

Which cell organelles are well-developed in secretory cells ?

Description : Which cell organelles are well-developed in secretory cells ?

Last Answer : In secretory cells, like the secretory cells of endocrine glands, organelles related to production, processing and exportation of substances are widely present and well-developed. These ... protein synthesis between the cytoplasm and the nucleus. Rough endoplasmic reticulum Golgi apparatus

Secretory granules are prominent in all of the following EXCEPT: C A. Eosinophils B. Pancreatic islet cells C. Lymphocytes D. None of these

Description : Secretory granules are prominent in all of the following EXCEPT: C A. Eosinophils B. Pancreatic islet cells C. Lymphocytes D. None of these

Last Answer : Lymphocytes

Proteins that are secreted by cells are generally a. not synthesized on membrane-bound ribosomes b. initially synthesized with a signal peptide or leader sequence at their C terminal c. found in vesicles and secretory granules d. moved across the cell membranes by endocytosis e. secreted in a form that is larger than the form present in the endoplasmic reticulum

Description : Proteins that are secreted by cells are generally a. not synthesized on membrane-bound ribosomes b. initially synthesized with a signal peptide or leader sequence at their C terminal c. found in ... endocytosis e. secreted in a form that is larger than the form present in the endoplasmic reticulum

Last Answer : found in vesicles and secretory granules

The Leydig’s cells as found in the human body are the secretory source of (a) progesterone (b) intestinal mucus (c) glucagon (d) androgens.

Description : The Leydig’s cells as found in the human body are the secretory source of (a) progesterone (b) intestinal mucus (c) glucagon (d) androgens.

Last Answer : androgens

Given below is a diagrammatic cross section of a single loop of human cochlea. A C D B A Which one of the following options correctly represents the names of three different parts? (a) D : Sensory hair cells, A : Endolymph, B : Tectorial membrane(b) A : Perilymph, B : Tectorial membrane, C: Endolymph (c) B : Tectorial membrane, C : Perilymph, D: Secretory cells (d) C : Endolymph, D : Sensory hair cells, A : Serum

Description : Given below is a diagrammatic cross section of a single loop of human cochlea. A C D B A Which one of the following options correctly represents the names of three different parts? (a) D : Sensory hair cells ... : Perilymph, D: Secretory cells (d) C : Endolymph, D : Sensory hair cells, A : Serum

Last Answer : (d) C : Endolymph, D : Sensory hair cells, A : Serum

The Leydig cells as found in the human body are the secretory source of (1) Androgens (2) Progesterone (3) Intestinal mucus (4) Glucagon

Description : The Leydig cells as found in the human body are the secretory source of (1) Androgens (2) Progesterone (3) Intestinal mucus (4) Glucagon

Last Answer : (1) Androgens

The Leydig cells as found in the human body are the secretory source of: a) Intestinal mucus b) Glucagon c) Androgens d) Progesterone

Description : The Leydig cells as found in the human body are the secretory source of: a) Intestinal mucus b) Glucagon c) Androgens d) Progesterone

Last Answer : c) Androgens

Mild steel is used for making (A) Fish plates (B) Die block (C) Channels (D) Drop forging

Description : Mild steel is used for making (A) Fish plates (B) Die block (C) Channels (D) Drop forging

Last Answer : (C) Channels

Xylem fibres are made up of – (1) Scierenchyma cells with thin walls (2) Scierenchyma cells with thick walls (3) Parenchyma cells with thin walls (4) Scierenchyma cells with no obliteration in central lumen

Description : Xylem fibres are made up of – (1) Scierenchyma cells with thin walls (2) Scierenchyma cells with thick walls (3) Parenchyma cells with thin walls (4) Scierenchyma cells with no obliteration in central lumen

Last Answer : (2) Scierenchyma cells with thick walls Explanation: Fibre that occurs as element of Xylem is called Xylem fibre. It is also referred to as Xylary fibre and wood fibre. It is made up of Scierenchyma cells with thick walls.

What are tracheal tubes? -Biology

Description : What are tracheal tubes? -Biology

Last Answer : answer:

Tracheal rings are `:-`

Description : Tracheal rings are `:-`

Last Answer : Tracheal rings are `:-` A. Complete B. Incomplete C. Dorsally incomplete D. Lateral incomplete

The function of tracheal cilia is to

Description : The function of tracheal cilia is to

Last Answer : The function of tracheal cilia is to A. Pass mucus out B. Pass mucus in C. Pass air out D. Pass air in

Tracheal rupture?

Description : Tracheal rupture?

Last Answer : DefinitionA tracheal or bronchial rupture is a tear or break in the windpipe (trachea) or bronchial tubes, the major airways leading to the lungs. A tear can also occur in the tissue lining the windpipe.Alternative ... PA. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

Which animals make tracheal respiration? Is there a blood-like fluid that participates in this process?

Description : Which animals make tracheal respiration? Is there a blood-like fluid that participates in this process?

Last Answer : Insects and arachnids are the arthropod animals that make tracheal respiration. In the body surface of these animals there are many orifices called spiracles that communicate with small ... insects the blood only transports nutrients; gases are independently transported by the tracheal system.

How do most insects respire? (1) Through skin (2) Through gills (3) By tracheal system (4) By lungs

Description : How do most insects respire? (1) Through skin (2) Through gills (3) By tracheal system (4) By lungs

Last Answer : (3) By tracheal system Explanation: Insects do not have lungs to do respiration. In insects respiration takes place through tracheae. Tracheae are tube like structures that open on the sides of their body through tiny holes called spiracles.

Diazepam is used as a muscle relaxant for: A. Deep intra-abdominal operation B. Tracheal intubation C. Tetanus D. Diagnosis of myasthenia gravis

Description : Diazepam is used as a muscle relaxant for: A. Deep intra-abdominal operation B. Tracheal intubation C. Tetanus D. Diagnosis of myasthenia gravis

Last Answer : C. Tetanus

Succinylcholine is the preferred muscle relaxant for tracheal intubation because: A. It produces rapid and complete paralysis of respiratory muscles with quick recovery B. It does not alter heart rate or blood pressure C. It does not cause histamine release D. It does not produce postoperative muscle soreness

Description : Succinylcholine is the preferred muscle relaxant for tracheal intubation because: A. It produces rapid and complete paralysis of respiratory muscles with quick recovery B. It does not alter heart rate or ... C. It does not cause histamine release D. It does not produce postoperative muscle soreness

Last Answer : A. It produces rapid and complete paralysis of respiratory muscles with quick recovery

The most rapidly acting nondepolarizing neuromuscular blocking agent which can be used as an alternative to succinylcholine for tracheal intubation is: A. Rocuronium B. Pancuronium C. Doxacurium D. Pipecuronium

Description : The most rapidly acting nondepolarizing neuromuscular blocking agent which can be used as an alternative to succinylcholine for tracheal intubation is: A. Rocuronium B. Pancuronium C. Doxacurium D. Pipecuronium

Last Answer : A. Rocuronium

What is the law of evaporation of water from plant cells ?

Description : What is the law of evaporation of water from plant cells ?

Last Answer : Perspiration is the process by which water evaporates from a plant cell.

What are the totiptent stem cells of plants ?

Description : What are the totiptent stem cells of plants ?

Last Answer : : Totiptent stem is the type of cell from which it is possible to produce plant seedlings directly.