Deciduous forests are characterised by
Options
(a) presence of a variety of grasses growing together (b) presence of a variety of crocodiles (c) presence of very narrow-leaved trees growing together (d) presence of […]
Food and space, the major limiting factors of an animal population, operate through which of the following determinants to bring about comparative stability of the population?
Options
(a) natality (b) immigration (c) emigration […]
Identify the plant belonging to the reed-swamp stage in hydrarch succession.
Options
(a) Juncus (b) Sagittaria (c) Salix (d) Trapa
Correct Answer:
Sagittaria
Explanation:
No explanation available. Be the first to write the […]
A hormone delaying sencescence is
Options
(a) auxin (b) cytokinin (c) ethylene (d) gibberellin
Correct Answer:
cytokinin
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Auxanometer is used to detect
Options
(a) respiration (b) transpiration (c) plant movement (d) growth
Correct Answer:
growth
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Cytokinin synthesis is maximum in
Options
(a) leaves (b) roots (c) fruit (d) shoot tip
Correct Answer:
roots
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Foolish seedling disease of rice led to the discovery of
Options
(a) abscisic acid (b) cytokinin (c) 2,4-D (d) gibberellin
Correct Answer:
gibberellin
Explanation:
The effect of gibberellins had been known in Japan since […]
Bone marrow is absent in
Options
(a) fishes (b) birds (c) reptilia (d) amphibia
Correct Answer:
birds
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Liver and pancreas of frog and rabbit are derived from
Options
(a) ectoderm (b) mesoderm (c) endoderm (d) mesoderm and endoderm
Correct Answer:
endoderm
Explanation:
No explanation available. Be the first to write […]
The excretory material of marine bony fish is
Options
(a) ammonia (b) amino acid (c) urea (d) protein
Correct Answer:
urea
Explanation:
No explanation available. Be the first to write the explanation for […]
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