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1.Sexual Reproduction in Flowering Plants
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Which one of the following statements is not true?
A
Pollen grains are released from anthers at $2-$celled state
B
Sporogenous cell directly behaves as the megaspore mother cell
C
Megaspore divides twice to form an eight nucleate embryo sac
D
Egg and synergids always lie near the micropylar end of ovule
Solution
Megaspore mother cell is developed inside the nucellus and by a meiotic division, it forms four megaspores. Out of these, generally three degenerate and remaining one is called functional megaspore. It undergoes mitosis three times without cytoplasmic division to form an eight nucleate embryo sac.
Standard 12
Biology
Similar Questions
Match the following:
| Column $- I$ | Column $- II$ |
| $(1)$ Germ pore | $(a)$ Lack of sporopollenin |
| $(2)$ Parthenium | $(b)$ Malva |
| $(3)$ Self incompatibility | $(c)$ Palms |
| $(d)$ Contaminant with important wheat |
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