3.Read the following features of organisms and categorise them under appropriate headings: (3 chambered heart; presence of ear pinnae; moist skin;2 chambered heart; wings;pneumatic bones; body hair;completely aquatic; body with head and trunk)
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Following are the characteristics of a reptile:
(i) Body is covered by dry and cornified skin, epidermal scales or scutes.
(ii) They have no external ear.
(iii) Crawling, creeping habit
(iv) 3 chambered heart.
So, the correct answer is (a).
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