Pollen tube bears
A) one male, one female nuclei
B) 2 male nuclei
C) 2 female nuclei
D) 2 male, 2 female nuclei
1 Answers
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(i) A box contins 80 discs, which are numbered from 1 to 80. If one disc is drawn at random from the box, find the probability that it bears a perfect
Correct Answer - ` (i) 1/10 (ii) (a) 9/10 (b) 1/5`
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This part of the cell bears genetic information.
Correct option is A) Nucleus
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A house has 3 tube lights and two fans. Each tube light draws 40 W and each fan draws 80 W. On the average all the tube lights
Correct option is C) 52 KWH
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The pollen grains of the following plant causes asthma in man:
(A) Parathenium
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A man of mass 30 kg uses a rope to climb which bears only 450 N. The maximum acceleration with which he can climb safely is
Correct option is D) 15 m/s2
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A boy of mass 30 kg uses a rope to climb which bears nearly 600 N. What is the maximum acceleration with which he can climb safely ?
Correct option is B) 20 ms-2
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The condition of pollen mother cell
Answer is (B) 2n
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The number of cells present in pollen grain
Answer is (A) One
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The name of the part on which pollen tube enters into embryo sac
(C) Micropyle
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Pollen grains are produced by
(A) Male flower
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