What is a spore? – Plant reproduction – Biology
Fern spores on the underside of a frond When plants like moss first began to grow outside the water, about 540 million years ago, they needed a way to reproduce [...]
30
05, 2017
30
05, 2017
Haploid and diploid cells – Plant reproduction
Human sperm cells with flagella (under a microscope) - They're haploid cells. When a cell divides by meiosis, it ends up with only half the amount of DNA it had before. [...]
