EASY
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Tadpoles breathe through their in water.

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Important Questions on Respiration in Organisms

EASY

Choose the right word from the given bracket and fill in the blank.

Fishes breathe with the help of _____ . (gills/wings)

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Sameer wanted to study the life cycle of a frog by observing the growth of tadpoles in a container. Which of the following conditions should Sameer maintain for the proper growth of tadpoles?
MEDIUM
Describe the process of breathing and respiration in frog.
EASY
Insects breathe through small openings called _____. (spiracles/lenticels/epipodites)
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Tadpoles which have late limb development stays near the surface of water. What is a possible reason for such a behaviour?
EASY

The hind legs in a frog develop before the fore limbs. What do you think might be the possible reason for this?
HARD
Name the breathing organs in (a) a fish, (b) an insect, (c) an earthworm and (d) a frog.
MEDIUM
Describe the process of breathing and respiration in insects.
MEDIUM
Which is the correct sequence of arrows depicting the life cycle of a frog starting from a tadpole?
EASY
Which of the following do not possess a threat to the life of a tadpole?
MEDIUM
Both frogs and toads lay their eggs in water but in a different pattern. Identify the eggs of a frog.
MEDIUM
Name two aquatic animals that do not breathe through gills.
MEDIUM
 Name an animal which breathes through (a) tracheae, (b) gills, (c) skin and (d) lungs.