Question

what criteria do we use to decide whether something is alive ? A question from class 10 th NCERTtextbook​

Answer 1

Multicellular organisms such as humans possess complex body designs. They have specialised cells and tissues for performing various necessary functions of the body such as intake of food and oxygen. Unlike unicellular organisms, multicellular cells are not in direct contact with the outside environment. Therefore, diffusion cannot meet their oxygen requirements.

Answer 2

Answer:

we can check that someone is alive or not by this criteria:-

1. metabolism
2. respiration
3. digestion
4. transportation
5. and reproduction