Micropyle occurs in

1. Ovary
2. Seed
3. Ovule
4. Both B and C

Fig: Ovule

Fig: Seed

In seed, micropyle is present as a minute opening at one end of seed coat through which water enters the seed. Water is required by the seed for germination.

In ovule, micropyle is present as an opening which is covered by the integuments. Through this opening, pollen tube enters the ovule during fertilization.

Hence, micropyle is present in both seed and ovule. So, the correct answer is D.