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reproductive or sex cells that contain the haploid set of chromosomes. The male gametes are called spermatozoa or sperm cells, and the female gametes are called egg cells or ova (singular: ovum).
pigments that occur in the brightly coloured, yellow, orange or red parts of the plant, such as...
is the gaining of a plant's ability to flower or germinate in the spring after exposure to the...
parenchyma cells that are exposed to light and contain many chloroplasts. Chlorenchyma cells...