Question

On the basis of number of cells living organisms are classified as unicellular and multicellular.
(i) What is meant by division of labour in multicellular organisms?
(ii) ‘Every multicellular organism has come from a single cell.’ Justify this statement.

Answer 1

Explanation:

1)In Multicellular organisms work is divided b/w different organs present in the body . This is termed as division of labour

2)We know that a cells are derived from pre existing cells . Thus the same is applicable for Multicellular organisms .Their life starts from a single cell. For example - Zygote in Humans