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Which of the following is/are the example/s of the molluscs?
a) snail                                 
b) Oyster
c) Octopus                         
d)
all of these

d

Which of the following group of invertebrates do not have any head?
a) Worm                             
b) Sponges
c) Insect                              
d) 
Echinoderms

d

Starfish is the example of……….
a) Worm                             
b) Sponges
c) 
Echinoderms
d) Insect 

c

The following picture (Brittle star) is the example of………


a) Echinoderms               
b) Sponges
c) Insect                              
d) Worm

a

The number of various types of living things found at a particular place is called……….
a) similar organism     
b) biodiversity
c) diversity                  
d) none of these

b

The type of plants and animals no longer found in biodiversity is called……..
a) 
extinct                            
b) endangered
c) both a and b                 
d) none of these

a