Biology
Assertion (A): Micropyle is the opening through which the pollen tube enters the ovule.
Reason (R): Micropyle helps in the diffusion of respiratory gases for the growing embryo.
- A is True and R is False.
- A is False and R is True.
- Both A and R are True.
- Both A and R are False.
Seeds
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Answer
Both A and R are True.
Reason — The micropyle is a small opening in the ovule through which the pollen tube enters during fertilization. After fertilization, the micropyle remains as a tiny pore that allows the entry of water and oxygen, helping in the respiration of the growing embryo.
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Reason (R): Fruits develop from the ovary of the pistil after the process of pollination and fertilization. Ovarian wall forms the pericarp.
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Reason (R): All dicotyledonous seeds contain two cotyledons which store food material for the developing embryo.
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