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Option 3 : The hind limbs are modified into wings.
The correct answer is The hind limbs are modified into wings.
- Forelimbs and hindlimbs are found on birds. The forelimbs are transformed into wings.
- Scales cover the hindlimbs, which are specialised for walking, jumping, and grasping tree branches. Birds have a warm-blooded nature.
- Aves are a group of endothermic animals that include birds.
- These animals belong to the Chordata phylum and have characteristics such as toothless jaws with a beak, hard-shelled eggs, and so on.
- In the terrestrial animal realm, there are an estimated 9000 Aves species. This species' most prominent attribute is its ability to fly.
- Their skeletal structure, which is made up of strong but hollow bones, allows them to fly.
- The fact that they are bipedal feathered animals is one of the most noticeable traits of the Aves class.
- Birds' forelimbs have evolved into wings that allow them to fly.
- Their back limbs have evolved into legs that aid them in swimming, walking, and other activities. Birds' legs often have four toes.
- Two or three toes, on the other hand, are rarely noticeable.
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