Introduction to Earthworm (Pheretima posthuma): Scientific Classification of Earthworm: Kingdom: Animalia Phylum: Annelida Class: Oligochaeta Order: Opisthopora Genus: Pheretima Species: posthuma Habit and habitat of […]
Similar to other vertebrates, the nervous system of frog is composed of 3 main sub-divisions: I. Central Nervous system of frog 1. Brain of Frog: […]
The blood vascular or circulatory system of frog is closed. The circulatory system consists of: Heart: Arterial system Venous system Blood Lymphatic system Its main […]
How Frog breathe? Respiratory system is comprised of the organs that help in the intake and supply of oxygen to the tissues as well as […]
Digestive system of Frog: parts and functions Digestive system consists of digestive tract or alimentary canal along with the associated digestive glands. Alimentary canal: Alimentary […]
Characteristic features of frog Habits: Frogs are non-poisonous, harmless and usually silent animals. Unless disturbed, the detection of frog’s presence is difficult. Along with being […]
What is Coral Reefs? Coral colonies grow continuously in size by budding of polyps and often form extensive masses, known as coral reefs. According to […]
What is coral? Corals (coral animals) are marine, mostly colonial, polyploid coelenterates, looking like miniature sea anemones and living in a secreted skeleton of their […]
Lamarckism- Introduction and Postulates Evolution is a slow, continuous and irreversible process of change. Organic evolution is the process of slow and gradual but regular […]
Polymorphism: The phenomenon of occurrence of an individual in two or more distinct morphological and functional forms. It occurs in the same species of an […]
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