Biology, 22.07.2019 02:10 luccim

External respiration takes place in?

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Biology, 22.06.2019 03:30, noahslambeenie359

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Biology, 22.06.2019 09:30, zahwaahmaf

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.