Zoology

Hibernation and aestivation are the forms of sleeping states which occurs under two different climate conditions. Both of them are extended forms of torpor. Sometimes, the animals fall asleep to survive in harsh and extreme environments. This sleeping pattern may vary as per the climate and the growth phases of the organism. The primary difference between hibernation and … [Read more...] about Difference Between Hibernation and Aestivation (Estivation)

We can classify the animals into two categories- Oviparous and Viviparous, based on how they produce their new generation. Oviparous animals are those which lay either fertilized or unfertilized eggs that hatch to give rise to a new young one. Whereas the viviparous are the animals that directly give birth to their younger ones. In oviparous animals, the development of … [Read more...] about Difference Between Oviparous and Viviparous Animals

Both the amphibians and reptiles belong to the phylum chordate, thereby having well defined vertebral columns. But still, they greatly differ in their living habits, structure, reproduction cycle and even habitat. The class amphibians comprise the animals like toads, frogs, and salamanders. They can survive easily on land and water as they have optional gills or porous skin … [Read more...] about Difference Between Amphibians and Reptiles

The functional and most significant difference in the male and female reproductive system is that male reproductive system only produces sperms and delivers to the female reproductive system. On the other hand, the female reproductive system is designed to produce a baby and promote its development. Reproduction is the process of fusion of male and female gamete, to produce … [Read more...] about Difference Between Male and Female Reproductive System

Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies. Internal fertilization is followed by mammals, birds, while external fertilization … [Read more...] about Difference Between Internal and External Fertilization