Match the parts of ovule given in column I with parts of seed given in column II:

Step 1: The ovule develops into a seed after fertilization. Matching parts:
- (a) Egg: Fertilized by sperm to form the zygote, which develops into the embryo (4).
- (b) Nucellus: Nutritive tissue in the ovule, persists in some seeds as perisperm (3).
- (c) Outer integument: Forms the outer seed coat, testa (1).
- (d) Inner integument: Forms the inner seed coat, tegmen (2).
Step 2: Thus, the matches are: (a)-(4), (b)-(3), (c)-(1), (d)-(2).
