EASY
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Tadpoles breathe through their in water.

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Important Questions on Respiration in Organisms

MEDIUM
Which is the correct sequence of arrows depicting the life cycle of a frog starting from a tadpole?
EASY

Fill in the blank space with the right word.

Fish and other water animals use the dissolved air for _____. (Breathing/ Preparing food)

MEDIUM

Fill in the blank with the correct word from the given clue box.

Skin Absence Inhalation Exhalation Anaerobic

Frogs in water respire through _____.

EASY
Insects breathe through small openings called _____. (spiracles/lenticels/epipodites)
EASY
Birds and reptiles breathe through _____ (gills/lungs/spiracles).
MEDIUM
Both frogs and toads lay their eggs in water but in a different pattern. Identify the eggs of a frog.
EASY
Fill in the blank using a suitable word:
Insects breathe through holes in their _____(front/sides).
EASY

The hind legs in a frog develop before the fore limbs. What do you think might be the possible reason for this?
EASY
_____ combines with haemoglobin and carbaminohaemoglobin is formed. (Write its full form.)
EASY
Butterfly and cockroaches breathe through air holes in their body called _____.
 
EASY
Fill in the blank with suitable word. 
Aryabhatta microbes  gills hands gravitational 
All aquatic animals breathe through _____.
EASY
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?
EASY

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

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

EASY
Which of the following do not possess a threat to the life of a tadpole?
MEDIUM
Tadpoles which have late limb development stays near the surface of water. What is a possible reason for such a behaviour?
MEDIUM
Unscramble the word and fill in the gap:
Insects take in air through _____ (pcsrsiaels).
MEDIUM
Tiny holes in the body of the bee, cockroach, and grasshopper through which it takes in the air are called _____.