The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively

Given below are a few statements related to external fertilisation.

I. The male and female gametes are formed and released simultaneously.

II. Only a few gametes are released into the medium.

III. Water is the medium in a majority of organisms exhibiting external fertilisation.

IV. Offspring formed as a result of external fertilisation have better chances of survival than those formed inside an organism.

Choose the correct statements.

The statements given below describe certain features that are observed in the pistil of flowers.

I. Pistil may have many carpels.

II. Each carpel may have more than one ovule.

III Each carpel has only one ovule.

IV. Pistil have only one carpel.

Choose the statements that are true from the options below.

Which of the following situations correctly describe the similarity between an angiospermic egg and a human egg?

I. Eggs of both are formed only once in a lifetime.

II. Both the angiosperm egg and human egg are stationary.

III. Both the angiosperm egg and human egg are motile transported.

IV. Syngamy in both results in the formation of zygote.

Choose the correct answer from the options given below.

Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because