One main characteristics of bird is that all of them can fly.

Category: Miscellaneous Indian Gk

Hint: Consider flightless birds.

Correct Answer: B) False

Exam Relevance: SSC, UPSC, State PSC

Difficulty: Easy

Explanations:

Option A: This option is incorrect because not all birds can fly. There are several species of birds that have evolved to be flightless, such as penguins, ostriches, and kiwis. The ability to fly is a common trait among birds but not a universal one.

Option B: This option is correct because not all birds can fly. Flightless birds exist and are a significant exception to the general characteristic of flight among birds. Examples include penguins, ostriches, and kiwis, which have adapted to their environments in ways that do not require flight.

Option Analysis:

Option A: This option is incorrect because not all birds can fly. There are several species of birds that have evolved to be flightless, such as penguins, ostriches, and kiwis. The ability to fly is a common trait among birds but not a universal one.
Option B: This option is correct because not all birds can fly. Flightless birds exist and are a significant exception to the general characteristic of flight among birds. Examples include penguins, ostriches, and kiwis, which have adapted to their environments in ways that do not require flight.

Mnemonic: Remember: "Not all birds fly, like penguins and ostriches."

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