water against the seed coat. air pushing on the seed. gravity on the seed. soil pressing on the seed.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A root emerges from a seed because of the force of
Possibilities:
- water against the seed coat.
- air pushing on the seed.
- gravity on the seed.
- soil pressing on the seed.

water against the seed coat.