what must happen before meiosis can begin?
a. the cell must split into four sections.
b. chromosomes must duplicate four times.
c. dna replicates and forms tetrads.
d. four haploid cells are produced.

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

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

How does secondary succession differ from primary succession?