Question

MicroPyle occurs in
(A) Ovary
(B) Seeds
(C) Ovule
(D) Both B and C

Answer 1

Hint: Micro Pyle is the first part of the embryo which covers the nucleus. It is the part through which the water and the mineral enters into the seed that helps in the growth of the seed into the plant. It is located in the place at which the pollen tube and the ovule joins.

Complete Answer:
 Micro Pyle is the small minute pores which is differentiated from the surface of the egg. It is formed by the projection of integuments into which the male gamete pollen tube enters to the egg of the ovule. It is usually located at the top of the seed or ovule.

- After maturation the ovary is converted into the fruit and the ovule is converted into the seed. Hence the place at which the pollen tube enters the ovule converted into the micro Pyle.
- When the seed is placed in the soil, all the water and the nutrients enter into the seed through this opening and help into the micropyle is the pore through which the water enters into the seed and it bulges causing the seed to germinate.
- Hence it occurs both in the seeds and the ovule.

Thus, the option (D) is correct.

Note: The hilum is differentiated from the micropyle by the nature of its elliptical scar found on the seed in which the funicular is attached to the seed. Whereas the micro Pyle is located at the end of the hilum in which the pollen tube is attached to the seed.