Number of prothallial cells present in an anther is
Options
(a) one (b) three (c) two (d) zero
Correct Answer:
zero
Explanation:
No explanation available. Be the first to write the explanation for […]
Pollination by air is called
Options
(a) anemophily (b) hydrophily (c) entomophily (d) zoophilly
Correct Answer:
anemophily
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Population of different species interacting in an ecosystem
Options
(a) biotic community (b) abiotic community (c) both (a) and (b) (d) community
Correct Answer:
biotic community
Explanation:
No explanation available. Be the first […]
Spinal cord passes through
Options
(a) foramen and magnum (b) foramen of Monro (c) iter (d) trochlear
Correct Answer:
foramen and magnum
Explanation:
No explanation available. Be the first to write the explanation […]
Main function of loop of Henle
Options
(a) absorption of sodium (b) absorption of sugar (c) secretion of ions (d) absorption of water
Correct Answer:
absorption of water
Explanation:
No explanation available. Be […]
Klinefelter’s syndrome has number of chromosomes
Options
(a) 45 (b) 47 (c) 46 (d) 44
Correct Answer:
47
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
Trisomy is expressed as
Options
(a) 2n + 1 (b) 2n – 1 (c) 2n +2 (d) 2n – 2
Correct Answer:
2n + 1
Explanation:
No explanation available. Be the first to […]
Homo erectus erectus is the scientific name of
Options
(a) java Ape man (b) peking man (c) cro-magnon (d) neanderthal
Correct Answer:
java Ape man
Explanation:
Pithecanthropus erectus is also known as java […]
Hybrid vigour is due to
Options
(a) heterosis (b) overpopulation (c) both heterosis and overpopulation (d) none of these
Correct Answer:
heterosis
Explanation:
Heterosis or hybrid vigour is the condition in which […]
Which of the following is an example of regional pollution?
Options
(a) smog (b) acid rain (c) O₃ layer depletion (d) both smog and acid rain
Correct Answer:
both smog and acid rain
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