Question

how do plants and animals survive inside water even when not in direct contact with air

Answer 1

The plant cells require oxygen to live and the same goes for animals, they require oxygen to survive.

However, aquatic plants and animals are bit different in their formation.

The aquatic plants and animals take their intake of oxygen from the water since water is the combined form of hydrogen and oxygen.

Their pore-like skin structure allows them to absorb oxygen and release hydrogen,

Answer 2

The aquatic plants and animals can easily survive in water.

This is because water has 0.7% oxygen present which the plants and animals use for breathing and processing life.

The plants take in oxygen through the leaves where as the animals in water have specially built lungs known as gills for breathing.