I think it is a sex cell (not sure)
Answer:
chloroplasts
Explanation:
cuz chlorophyll: green pigment found in chloroplasts that absorbs light energy required for photosynthesis.
A compound (for example: H2O)
Pollen grain is odd one among all the other three. Pollen grain in a male gametophytic structure. Whereas all the other three are found inside ovule (nucellus, micropyle and embryo sac).
Hope Helps:)
The product is released from the active site of the enzyme during a chemical reaction.