Answer:
Stomata
Explanation:
Normally stomata open when the light strikes the leaf in the morning and close during the night.
d. During photosynthesis, CO2 enters the plant leave through opened stomata and in return it releases glucose,oxygen and some little molecules of water
a sexual
a sexual reproduction
I think you're talking about how they survive in the snow. That would be by hibernating.
If you rephrase your question let me know and I can try to help you further :)