Answer:

1. Wrong. When a system has more energy, it is more reactive, hence more unstable.
2. Wrong. Epiphytes have leaves which contain chlorophyll, which let them produce their own food
3. Wrong. The gametophytes in its life cycle produce reproductive cells which then give rise to the sporophyte generation.
4. Wrong. It will only accelerate the formation of more and more pesticide-resistant pests, which, at the end, render the pesticides useless in pest control.
5. True. The energy released from the oxydation of those two elements can be harnested by certain bacteria (usually thermophyllic) e.g. sulphur bacteria.
6. True. All enzymes are made up of polypeptides. Other proteins like antibody serve different functions from their catalytic cousins.
7. True.
8. True. Mutation introduces allelles which account for the variations we see today in all life forms.
9. Wrong. Adenine + Guanine = Cytosine + Thiamine
10. Wrong. Another possibility is 100 chromosomes.