Earthworm: Introduction, Systematic Position, Habitat and Habit -CLASS 11

Frog: Systematic position, Habit and habitat

Systematic Position

Phylum          :            Chordata

Sub-Phylum :              Vertebrata 

Class              :            Amphibia

Order.            :            Anura       

Genus            :            Rana

Species          :            tigrina

New Name    :             Hoplobatracus  tigerinus

Habitat

Frog lives in or near permanent fresh water bodies like lakes, ponds, rivers etc. It lives near water mainly for two reasons:

a) To keep skin moist for cutaneous respiration and

b) To escape away from enemies by jumping in water.

However, during rainy season they are found far away from water bodies.

Habit

Frogs are non-poisonous, harmless and silent animals. It shows following habits;

     a. Resting :- Frog rests on land with its short forelimbs upright and hind-limbs folded as  'Z' i.e. in squatting position.

Earthworm: Systematic position, Habit and Habitat

Systematic Position:

Phylum:-  Annelida

Class:-  Oligochaeta

Order:- Opisthopora

Genus:-  Pheretima

Species:-  posthuma

Common name:- Earthworm

Habit and Habitat:

Earthworm lives inside burrows in moist soil surfaces. They make their burrows