Question

Which of the following groups contains organisms that spend half of their life cycle in water and the other half on land?

1) Amphibians
2) Reptiles
3) Mammals
4) Insects

Answer 1

Amphibians are the organisms that live in water as larvae and on land as adults, including species like frogs, salamanders, and caecilians.

Step-by-step explanation:

The group of organisms that spend half of their life cycle in water and the other half on land is Amphibians. Amphibians, including frogs, salamanders, and caecilians, begin their lives as larvae in water, using gills to breathe. As they grow, they undergo metamorphosis, at which point they develop lungs and limbs for life on land, although with a strong dependence on water for their skin's respiration and reproductive processes.