Question1
An animal is a multi-cellular organism with cells that are not enclosed in a rigid cell wall. Animals differ from other organisms in two major aspects: 1) through the structure of their cell wall and (2) through their feeding habits. For example, unlike other organisms, such as plants, animals do not have a rigid cell wall. Plants on the other hand have a rigid cell wall. In terms of nutrition, animals are heterotrophs because of the way they synthesize organic compounds. Plants, on the other hand, are autotrophs. Plants are classified as autotrophs because they synthesize organic molecules directly using energy from ...
