Short Answer Type
Long Answer TypeShort Answer TypeExamine a few flowers of any cucurbit plant and try to identify the staminate and pistillate flowers. Do you know any other plant that bears unisexual flowers?
Why are offspring of oviparous animals at a greater risk as compared to offspring of viviparous animals?
Oviparous animals lay eggs outside of their body. Thus, the eggs have to face the harsh environmental conditions like excessive heat or cold, predators, water scarcity etc. On the other hand, in viviparous animals, the development of the egg takes place inside the body of the female. The egg is well protected from the unfavourable conditions. Hence, the offspring of an egg-laying or oviparous animal is at greater risk as compared to the offspring of a viviparous animal, which gives birth to its young ones.
Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions?
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