The contractile vacuole expels excess fluid from the cell.
The theory is the Continental drift, the super-continent is called the Pangaea.
Circulatory system and nucleus
Answer:
plant organisms can alternate between diploid sporophyte and haploid gametophyte phases.
Explanation:
Once mature, the gametophyte produces male and female gametes. When haploid gametes unite, they form a diploid zygote. The zygote grows via mitosis to form a new diploid sporophyte,Thus unlike in animals.
