The chances of survival of young ones is greater in viviparous organisms than oviparous organisms. Justify this statement.

Assertion: The chances of survival of young ones is greater in viviparous organisins as compared to oviparous organisms. Reason: In vivipary, there is proper embryonic care and protection.

Heart wood is resistant to micro organisms. Justify the statement.

Why are offspring of oviparous animals at a greater risk as compared to offspring of viviparous animals?

Could the number of eggs or young ones produced by an oviparous and viviparous mother be equal? Why?

Bacteria and fungi spread everywhere in biosphere. Their reproduction and mode of nutrition make them more successful. Life on earth would not exist without these organisms. Can you Justify the last statement with suitable arguments?

The cell division involved in gamete formation is not of the same type in different organisms. Justify.