Q8 of 49 Page 5

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

There is no relationship between the size of an organism and its life span this can be justified by giving two examples:

1.The size of birds like crow and parrot is similar but the life span of crow is 15 years and the life span of parrot is 140 years this shows there is no such relation between the size and age.


2.Both Mango and Banyan tree have same size, but their life spans are different.


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6

The probability of fruit set in a self-pollinated bisexual flower of a plant is far greater than a dioecious plant. Explain.

 7

Is the presence of large number of chromosomes in an organism a hindrance to sexual reproduction? Justify your answer by giving suitable reasons.

 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.


 10

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