Which of the following plant families has $polysiphonous$ pollen grains?

If the root of a flowering plant has $24$ chromosomes,then how many chromosomes does its gamete have?

If the diploid number of an angiospermic plant is $24$,the number of chromosomes in the pollen grain,endosperm,and integument will be:

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.

Explain post-fertilization events. Describe the steps of post-fertilization.

Choose the correct option with respect to the type of division during gamete formation and the type of division in the zygote for organisms having a haplontic life cycle,respectively.