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10Fishes are poikilothermic.
Amphibians have dry skin.
Reptiles respire through lungs.
Birds have hollow bones.
Mammals lay eggs only.
Frog has a three-chambered heart.
Crocodile has a three-chambered heart.
Birds are oviparous.
Mammals are homeothermic.
Fish live only on land.
Percentage: 0%
To which class do egg-laying animals with a four-chambered heart and body covered with feathers belong?
What is the main reason for classifying whales in the class Mammalia?
Which animal belongs to Pisces?
Which class has moist skin?
Which animal is poikilothermic?
Which class has feathers?
Which animal gives milk to its young ones?
Fertilization in fishes is mostly:
Which animal has gills only in larval stage?
Which class is viviparous?
Fishes respire through ______.
The heart of Pisces is ______-chambered.
Amphibians live both on ______ and ______.
Reptiles have ______ and ______ scales on their body.
Birds are covered with ______.
Mammals give birth to ______ ones directly.
Frogs breathe through ______ and ______ skin.
Birds have ______ (pneumatic) bones.
Mammals are ______ animals.
Crocodile has a ______-chambered heart.