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NEET UG BIOLOGY MCQ: STRUCTURAL ORGANISATION IN ANIMALS
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Given below the functions of different parts of the alimentary canal of cockroach. Correlate these functions with their respective organs
I. Grinding of food particles
II. Secretion of digestive juices
III. Clearing of haemolymph
The correct set of organs is
I. Grinding of food particles
II. Secretion of digestive juices
III. Clearing of haemolymph
The correct set of organs is
View answer and explanation
Correct option: B
I. Proventriculus
II. Gastric caecae
III. Malpighian tubule
II. Gastric caecae
III. Malpighian tubule
Option B (I. Proventriculus, II. Gastric caecae, III. Malpighian tubule) is correct because the proventriculus grinds food, gastric caecae secrete digestive juices, and Malpighian tubules clear haemolymph.
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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