HARD
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Write 'true' or 'false'. If false, write the correct statement.

Arthropods have an exoskeleton made up of chitin.

Important Questions on Diversity in Living Organisms

EASY
Among the following, identify the wrong statements with respect to a whale and write them correctly.
MEDIUM

Which among the following have open circulatory system?

(i) Annelida    

(ii) Coelenterata

(iii) Mollusca    

(iv) Arthropoda

EASY
One of the following is not an Annelid:
EASY
Identify a member of Porifera from the following.
EASY
Hard calcium carbonate structures are used as a skeleton by
EASY
The most intelligent animals are found in class:
EASY
In which group of animals, the coelom is filled with blood?
 
MEDIUM
The most striking feature of vertebrates is the presence of:
EASY
Four chambered heart is found in members of class :
EASY
The locomotory organs of Echinodermata are:    
 
MEDIUM

Which among the following have scales?

(i) Pisces

(ii) Amphibians

(iii) Mammals

(iv) Reptiles

MEDIUM
The locomotory organs of Echinodermata are:
EASY
Two chambered heart is found in members of class:
EASY
Nephridia are the excretory organs of:
 
EASY
Differentiation in segmental fashion occurs in: