Biology

The optimum temperature of scrotum in male reproductive system for production of sperms is 1. to 3. C lower the body temperature.

When man himself transfers pollen grains to the stigma of the flower is called artificial pollination.

Amoeba is reproduce by binary fusion and Paramecium is reproduced by multiple fusion.

The male gamete is known as Pollen grain and the female gamete is known as Ovule.

Full term of development of embryo in the uterus (about 280 days).

Solution : Sperm– Motile consist of neck, middle piece and tail. Ovum –Non-motile and round in structure.

In some organism voth sex organs are present in the same individual, such individuals are known as Hermaphrodite.

In some organism, an egg develops into an adult without being fertilised. This is known as Parthenogenesis.

Cross-pollination is the transfer of pollen grains from the anther of one flower to stimga of another flower of the same species.

There are two types of reproduction:- Asexual reproduction Sexual reproduction