Biology Questions Practice Question and Answer
8 Q: If the head of cockroach is removed, it may live for few days because :
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63c924c9bdbddb32fda1a10a- 1The supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.false
- 2The cockroach does not have nervous system.false
- 3Head holds a small proportion of nervous system while restis situated along ventral part of its bodyfalse
- 4The head holds 1/3rd of the nervous system while the rest is situated along dorsal part of its body.true
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Answer : 4. "The head holds 1/3rd of the nervous system while the rest is situated along dorsal part of its body."
Q: Consider following features:
(a) Organ system level of organization
(b) Bilateral symmetry
(c) True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics.
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63c924581c47ef334be20a45(c) True coelomates with segmentation of body
- 1Annelida, Arthropoda and Chordatatrue
- 2Annelida, Arthropoda and Molluscafalse
- 3Arthropoda, Mollusca and Chordatafalse
- 4Annelida, Mollusca and Chordatafalse
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Answer : 1. "Annelida, Arthropoda and Chordata "
Q: What is the effect of Oxytocin produced by hypothalamus?
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63c910141c47ef334be1af4e- 1Stimulates the synthesis and secretion of androgensfalse
- 2Stimulates formation of milk in mammary glandsfalse
- 3Stimulates a vigorous myometrial contraction at the time of childbirthtrue
- 4Stimulates synthesis of carbohydrates from non-carbohydrates in liverfalse
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Answer : 3. "Stimulates a vigorous myometrial contraction at the time of childbirth"
Q: Which of the following is true about
Atrial Natriuretic Factor :
1) Peptide hormone 2) Increases blood pressure 3) Reduces blood pressure 4) Vaso constrictor 5) Cause vasodialation
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63c90f95be373f6c954b29ce- 11, 2 and 4 are truefalse
- 21,3 and 5 are truetrue
- 32 and 4 are truefalse
- 45 only is truefalse
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Answer : 2. "1,3 and 5 are true "
Q: A fall in glomerular filtration rate (GFR) activates
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63c8fb241c47ef334be161f8- 1Juxta glomerular cells to release renintrue
- 2Adrenal cortex to release aldosteronefalse
- 3Adrenal medulla to release adrenalinefalse
- 4Posterior pituitary to release vasopressinfalse
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Answer : 1. "Juxta glomerular cells to release renin"
Q: What is the osmolarity(in mO smolL–1) in the outer cortex and inner medullary region?
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63c8fa49bd6d90332092c5a3- 1300 and 900 respectivelyfalse
- 2600 and 300 respectivelyfalse
- 31200 and 300 respectivelyfalse
- 4300 and 1200 respectivelytrue
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Answer : 4. "300 and 1200 respectively"
Q: Which one is the first heart sound?
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63c8f9eb8731ac33279f097b- 1Lub during closure semilunar valvesfalse
- 2Lub during closure of atrio-ventricular valvestrue
- 3Dub during closure of atrio- ventricular valvesfalse
- 4Dub during closure of semilunarvalevesfalse
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Answer : 2. "Lub during closure of atrio-ventricular valves"
Q: Which of the following is not a major component of the food?
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63c7cd998731ac33279b2244- 1Carbohydratesfalse
- 2proteinsfalse
- 3Vitaminstrue
- 4Fatsfalse
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