Sawaal
13
Q:

Which among the following have a 'mixed heart'?

 

A) Reptiles B) Nematodes
C) Birds D) Fishes

Answer:   A) Reptiles



Explanation:

Mixed heart means the heart in which the oxygenated and the deoxygenated blood is mixed. Reptiles and amphibians have mixed heart.

Subject: Animals and Birds
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Many freshwater animals cannot live for long in sea water and vice versa because of the _______ problems, they would face.

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Which one of the following is a true fish as per the biological system of classification?

A) Silverfish B) Jellyfish
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Answer & Explanation Answer: D) Flying fish

Explanation:

Cuttlefish or cuttles are marine animals of the order Sepiida. They belong to the class Cephalopoda, which also includes squid, octopuses, and nautiluses. Cuttlefish have a unique internal shell, the cuttlebone. Despite their name, cuttlefish are not fish but molluscs.

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Which one of the following pairs of animals is warm blooded?

A) Crocodile and Ostrich B) Hagfish and Dogfish
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Answer & Explanation Answer: D) Peacock and Camel

Explanation:

Warm-blooded creatures, like mammals and birds, try to keep the inside of their bodies at a constant temperature. They do this by generating their own heat when they are in a cooler environment, and by cooling themselves when they are in a hotter environment. To generate heat, warm-blooded animals convert the food that they eat into energy. Peacock and camel are warm blooded animals.

 

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Snakes, turtle, lizards and crocodiles falls under which category of animals?

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