Q10 of 49 Page 5

Give reasons as to why cell division cannot be a type of reproduction in multicellular organisms.

Cell division takes place in unicellular organisms because each of the parent body forms a daughter cell, but in multicellular organisms no such differentiation occurs. Cell division would be an impractical method.


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8

Is there a relationship between the size of an organism and its life span? Give two examples in support of your answer.

 9

In the figure given below the plant bears two different types of flowers marked ‘A’ and ‘B’. Identify the types of flowers and state the type of pollination that will occur in them.


 11

In the figure given below, mark the ovule and pericarp.


 12

Why do gametes produced in large numbers in organisms exhibit external fertilisation?