Pollination occurs when pollen grains from the anther land on a stigma. After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary. Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules.
Answer: Low population density Tend to decrease birth rates and increase mortality rates.
Explanation:
Answer: How are traits inherited?
Parents pass on traits or characteristics, such as eye colour and blood type, to their children through their genes. ... The two alleles in a gene pair are inherited, one from each parent. Alleles interact with each other in different ways. These are called inheritance patterns.
Explanation:
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