The blood calcium level is lowered by the deficiency of
Options
(a) parathormone (b) thyroxine (c) both calcitonin and parathormone (d) calcitonin
Correct Answer:
parathormone
Explanation:
A peptide hormone secreted by the parathyroid […]
The biomembrane tonoplast is
Options
(a) covering of cell wall (b) covering of nucleus (c) covering of mitochondria (d) covering of vacuole
Correct Answer:
covering of vacuole
Explanation:
No explanation available. Be the […]
The bioassay of auxin is
Options
(a) Avena curvature test (b) callus formation (c) culture of fungus (d) seed dormancy
Correct Answer:
Avena curvature test
Explanation:
Bioassay is a testing of biological activity […]
The basis of life is
Options
(a) nucleic acid (b) nucleoprotein (c) lipid (d) proteins
Correct Answer:
nucleic acid
Explanation:
No explanation available. Be the first to write the explanation for this question […]
The basis of grouping of living organisms into eukaryotes and prokaryotes is
Options
(a) plasma membrane (b) ribosomes (c) nucleus (d) none of these
Correct Answer:
nucleus
Explanation:
No explanation available. Be the […]
The autonomic nervous system has control over
Options
(a) Reflex action (b) Skeletal muscles (c) Sense organs (d) Internal organs
Correct Answer:
Internal organs
Explanation:
Autonomic nervous system regulates and coordinates involuntary activities […]
The arthropod, which is known as living fossil is
Options
(a) Bombyx(silkworm) (b) Locusta(locust) (c) Limulus(king crab) (d) Annelida
Correct Answer:
Limulus(king crab)
Explanation:
Limulus is a living fossil animal. The living fossil […]
The amyloplasts look like
Options
(a) aleuroplast (b) proplastids (c) chloroplast (d) elaiplast
Correct Answer:
proplastids
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting […]
The agency responsible for seed dispersal in cotton, poppy and orchids is
Options
(a) bird (b) water (c) man (d) wind
Correct Answer:
wind
Explanation:
No explanation available. Be the first to write […]
The ‘U’ shaped bone present at the base of the buccal cavity is
Options
(a) zygomatic (b) ethmoid (c) Malleus (d) hyoid
Correct Answer:
hyoid
Explanation:
The hyoid bone is situated in the […]
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