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Which of the following is not a characteristic feature of sponges?
- a)Cellular level of organization
- b)Presence of ostia
- c)Intracellular digestion
- d)Body supported by chitin
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is not a characteristic feature of sponges?a)Ce...
In sponges, body is not supported by chitin. Their body is supported by calcareous or siliceous spicules or protein spongin fibres.
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Which of the following is not a characteristic feature of sponges?a)Ce...
Cellular level of organization:
Sponges are multicellular organisms, but they lack true tissues and organs. Instead, they have a cellular level of organization where different cell types work together to carry out essential functions.
Presence of ostia:
Sponges have small pores called ostia on their body walls, through which water enters the sponge. These ostia serve as openings for water flow, allowing the sponge to filter feed and obtain nutrients.
Intracellular digestion:
Sponges perform intracellular digestion, meaning that digestion occurs inside specialized cells called choanocytes. These cells capture food particles from the water that enters through the ostia and digest them within their own cytoplasm.
Body supported by chitin:
This statement is incorrect because sponges do not have bodies supported by chitin. Instead, sponges have a unique structural system made of a protein called spongin and/or mineralized spicules. Spongin provides flexibility and support, while spicules offer rigidity to the sponge's body. Chitin is a structural polysaccharide found in the exoskeletons of arthropods and cell walls of fungi, not in sponges.
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Which of the following is not a characteristic feature of sponges?a)Cellular level of organizationb)Presence of ostiac)Intracellular digestiond)Body supported by chitinCorrect answer is option 'D'. Can you explain this answer?
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Which of the following is not a characteristic feature of sponges?a)Cellular level of organizationb)Presence of ostiac)Intracellular digestiond)Body supported by chitinCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following is not a characteristic feature of sponges?a)Cellular level of organizationb)Presence of ostiac)Intracellular digestiond)Body supported by chitinCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is not a characteristic feature of sponges?a)Cellular level of organizationb)Presence of ostiac)Intracellular digestiond)Body supported by chitinCorrect answer is option 'D'. Can you explain this answer?.
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