SECTION-B Objective Type Questions 1The arthropod exoskeleton is composed of (1)Several kinds of polysaccharides (2)Layers of proteins and a polysaccharide called chitin (3)Several kinds of proteins (4)Single complex protein called arthropodin
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1
Answer:
opt 2
Explanation:
all arthropods have chitinous exoskeleton
Answered by
2
Answer:
option 2 ...... ..........
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