Which of the following is not associated to exoskeleton of arthropods?
Correct answer: B. Secreted by endodermis
- A. Non-living
- B. Secreted by endodermis
- C. Acellular
- D. Polysaccharide in nature
Explanation
The exoskeleton is secreted by a layer of cells called the epidermis, which is located beneath the existing exoskeleton. As the arthropod grows, it molts or sheds its old exoskeleton in a process called ecdysis and secretes a new, larger exoskeleton to accommodate its increased size.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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