Animal Kingdom

Kingdom Animalia is characterized by heterotrophic eukaryotic organisms that are multi cellular and their cells lack cell walls. They directly or indirectly depend on plants…

Every fertile stamen contains an anther. Inside the anther develops the pollen grains. At one time the anther bursts and pollen grains are carried and…

After the formation of ova in the ovaries of female toad, they pass towards the outer side through the oviducts. At this time the ova…

A complex dialogue exists between ovum and sperm. The egg activates the sperm metabolism that is essential for fertilization, and the sperm reciprocates by activating…

The organs which form the female reproductive system of toad are: (1) A pair of ovaries (2) A pair of oviducts (3) A pair of…

In the male toad, the organs which take the direct part in reproduction are- A pair of testis A pair of vasa efferentia Urino-genital duct…

Reproduction is a physiological function. It is necessary for the continuance of species, so that it does not become extinct. This process can be accomplished…

Amino acid is produced due to digestion of protein. This amino acid is used to perform various Biological functions. Excess and unused amino acid under…

Each kidney of toad is formed by the combination of numerous fine coiled renal tubules. In each kidney, there are about two thousand such coiled…

The two kidneys of toad are located in the abdominal region on both sides of the backbone. The kidneys are elongated, deep red coloured with…