Slow breathing is the characteristic of

1. Desert Animals
2. Aquatic Animals
3. Aerial Animals
4. Land Animals

Diversity of organisms is found in different habitats because of different adaptations for

1. Average temperature
2. Soil type
3. Annual precipitation
4. All of these

Which of the following categories of animals have a streamlined body shape ?

1. Birds and Reptiles
2. Fish and Amphibians
3. Fish and Birds
4. Birds and Mammals

Gill cover is technically termed as :

1. Exoskeleton
2. Operculum
3. Flippers
4. None of these