Which type of propagation is better for the plant
By seeds
By tubers
By bulbs
By rhizome
Why the chances of survival of young ones is greater in viviparous ?
Choose correct pair :
...... is the vital link that ensures continuity of species between organisms of one generation and the next generation
Identify $X$ and $Y$ from the given diagram
Which reproductive adaptation is characteristic of most terrestrial vertebrates but not of most aquatic vertebrates?