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NEET UG BIOLOGY MCQ: STRUCTURAL ORGANISATION IN ANIMALS
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Consider the following statements about Rana tigrina
I. The skin of frog sheds after every few weeks
II. Camouflage is a common defensive mechanism of frog
III. Chest muscles are involved in the process of respiration
IV. Their nervous system consists of a brain, spinal cord and nerves
Which of the above statement is incorrect?
I. The skin of frog sheds after every few weeks
II. Camouflage is a common defensive mechanism of frog
III. Chest muscles are involved in the process of respiration
IV. Their nervous system consists of a brain, spinal cord and nerves
Which of the above statement is incorrect?
View answer and explanation
Correct option: C
Only III
Option C (Only III) is correct because chest muscles are not primarily involved in frog respiration; buccal cavity, skin, and lungs are.
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i) Cardiac fibres are branched with one or more nuclei.
ii) Smooth muscles are unbranched and cylindrical.
iii) Striated muscles can be branched or unbranched.
iv) Involuntary muscles are non-striated. The ciliated columnar epithelial cells in humans are known to occur in The outermost wall of spermatophore of cockroach is composed of the secretions of