GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They each have a pair of antennae on the head.
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They each have three pairs of legs.
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They have feathers.
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They have a beak.
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They have a pair of wings and a pair of legs.
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Detailed explanation-1: -Birds are warm-blooded animals. Their forelimbs are modified into wings. They have well-developed flight muscles that help during the flight. Their hind limbs are adapted for walking, hopping, perching, grasping, wading and swimming.
Detailed explanation-2: -Birds are a group of warm-blooded animals which falls under the phylum of Aves. They have four limbs which include 1 pair of wings and they also consist of 1 pair of legs(2legs).
Detailed explanation-3: -Feathers that are light and smooth. A beak, rather than hefty, bone jaws and teeth. A sternum (an expanded breastbone) for attaching flight muscles. Light bones-birds’ bones are hollow, with air sacs and thin, small cross-sections to strengthen them, reducing the force of gravity.
Detailed explanation-4: -Feathers. High metabolism. A four-chambered heart. A beak with no teeth. A lightweight but strong skeleton. Production of hard-shelled eggs. 05-Dec-2021