(5) describe how the nucleus, the chloroplast, and the mitochondrion
may have become a part of the eukaryotic cell.

answer:

mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration.

chloroplasts are found in plants and algae. they're responsible for capturing light energy to make sugars in photosynthesis.

mitochondria and chloroplasts likely began as bacteria that were engulfed by larger cells (the endosymbiont theory).

explanation:

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

a. to encourage apoptosis