How many parents does a spore have?
A. one
B. two

How does the nervous system affect the excretory system?

Aplant may open end close its stomata to prevent excess water loss and maintain

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material