What do fungi and arthropods have in common? a. both groups are commonly coenocytic. b. the haploid state is dominant in both groups. c. both groups are predominantly saprobic in nutrition. d. the protective coats of both groups are made of chitin. e. both groups have cell walls?

The correct answer is d: 'the protective coats of both groups are made of chitin'
Chitin is a long-chain polymer derivative of glucose, with a structural function in various groups of animals and plants, such as of cell walls of fungi, exoskeletons of arthropods and the scales of fish. It can be compared in function to keratin found in our hair and nails.

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