Earthworms during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton because
Options
(a) coelomic fluid (b) blood (c) gut peristalsis (d) setae
Correct Answer:
coelomic fluid
Explanation:
Earthworms have […]
Which one of the following is NOT a characteristic of phylum Annelida?
Options
(a) Closed circulatory system (b) Segmentation (c) Pseudocoelom (d) Ventral nerve cord
Correct Answer:
Pseudocoelom
Explanation:
Characteristic of phylum-Annelida is […]
Which one of the following in birds, indicates their reptilian ancestry?
Options
(a) Scales on their hind limbs (b) Four-chambered heart (c) Two special chambers crop and gizzard in their digestive tract (d) […]
In leaves of C₄ plants malic acid synthesis during CO₂ fixation occurs in
Options
(a) epidermal cells (b) mesophyll cells (c) bundle sheath (d) Guard cells
Correct Answer:
mesophyll cells
Explanation:
In leaves of […]
Human insulin is being commercially produced from a transgenic species of
Options
(a) Escherichia (b) Mycobacterium (c) Rhizobium (d) Saccharomyces
Correct Answer:
Escherichia
Explanation:
No explanation available. Be the first to write the explanation […]
Cryl endotoxins obtained from Bacillus thuringiensis are effective against
Options
(a) mosquitoes (b) flies (c) nematodes (d) boll worms
Correct Answer:
boll worms
Explanation:
No explanation available. Be the first to write the explanation […]
Which type of white blood cells are concerned with the release of histamine and the natural anti-coagulant heparin?
Options
(a) Neutrophils (b) Basophils (c) Eosinophils (d) Monocytes
Correct Answer:
Basophils
Explanation:
Basophil is a […]
To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes belong?
Options
(a) Cytokine barriers (b) Cellular barriers (c) Physiological barriers (d) Physical barriers
Which one of the following pairs of organs includes only the endocrine glands?
Options
(a) Parathyroid and Adrenal (b) Pancreas and Parathyroid (c) Thymus and Testes (d) Adrenal and Ovary
Correct Answer:
Parathyroid and […]
In which one of the following, male and female gametophytes do not have free living independent existence for?
Options
(a) Pteris (b) Funaria (c) Polytrichum (d) Cedrus
Correct Answer:
Cedrus
Explanation:
Male and female gametophytes of […]
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