Question

1. What is meant by adaptation
2. Give two characteristics of the animals showing aquatic adaptation
3. What happens during respiration ?​

Answer 1

1. What is meant by adaptation

any alteration in the structure or function of an organism or any of its parts that results from natural selection and by which the organism becomes better fitted to survive and multiply in its environment. a form or structure modified to fit a changed environment.

2. Give two characteristics of the animals showing aquatic adaptation

Ducks have webbed feet that allow them to float in water. 2. Fishes have gills that allow them to breathe in water.

3. What happens during respiration ?

Glucose and oxygen react together in cells to produce carbon dioxide and water and releases energy. The reaction is called aerobic respiration because oxygen from the air is needed for it to work. Energy is released in the reaction. The mitochondria , found in the cell cytoplasm, are where most respiration happens.