In this article we will discuss about Metamorphosis of Amphibians:- 1. Meaning of Metamorphosis 2. Types of Amphibian Metamorphosis 3. Structure 4. Hormonal Control. Meaning of Metamorphosis: Metamorphosis may be defined as "a rapid differentiation of adult characters after a relatively prolonged period of slow or arrested differentiation in a larva". According to Duellman and Trueb (1986) Metamorphosis can be [...]
In this article we will discuss about Toad:- 1. Introduction to Toad 2. Habit and Habitat of Toad 3. External Structures 4. Locomotion 5. Skeletal Structures 6. Coelom 7. Sense Organs 8. Vocalization 9. Life History 10. Enemy. Contents: Introduction to Toad Habit and Habitat of Toad External Structures of Toad Locomotion in Toad Skeletal Structures of Toad Coelom in [...]
In this article we will discuss about the meaning and types of pademorphosis. Meaning of Paedomorphosis: The phenomenon of attainment of sexual maturity leading to reproduction in an arrested larval stage (pre-adult stage) is called Paedogenesis (Gk. pais; child; morphe form). The term first used by Von Baer (1866). Neoteny (Gk. neos, young, teinein, to stretch), a term first introduced [...]