Describe how photosynthesis enables plants, animals, and other organisms to survive in a closed ecosystem such as Biosphere 2. In your answer, be sure to trace how matter flows through the ecosystem as a result of photosynthesis.

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.