Which processes occur in a plant embryo before it pushes out of the soil? check all that apply.
a. it uses food from the seed.
b. its leaves open.
c. it produces its own food.
d. its roots grow downward.
e. its stem grows upward.

A, C and D

Explanation:

A plant embryo must have some strength before it pushes out of the soil.

It will first feed from the nutrients the seed has. Then it will start to grow up its roots downward in order to have the way to absorve energy from the soil. Once it is acquiring this energy from the soil, it will start growing the stem upward, opening up the space to push out of the soil.

After it has pushed out of the soil, the opening of the leaves and production of its own energy in the photosynthesis will take place.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

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