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Which of the following is true of members of the phylum Cnidaria?
- a)They are not capable of locomotion because they lack true muscle tissue
- b)They have either, or both, of two body forms: mobile polyps and sessile medusae
- c)They may use a gastrovascular cavity as a hydrostatic skeleton
- d)They are the simplest organisms with a complete alimentary canal (two openings)
Correct answer is option 'C'. Can you explain this answer?
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Which of the following is true of members of the phylum Cnidaria?a)The...
Locomotion is possible by tentacles present in them..So;A is not true..they dont have both ...they show metagenisis in obelia i.e the alternation of two forms polyp & medusa...so;B is not true...Their elimentary canal has a single opening...so D is not true...Hence;option B is he answer..They have a central gastro-vascular cavity or coelenteron
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Which of the following is true of members of the phylum Cnidaria?a)The...
Members of the Phylum Cnidaria, which includes jellyfish, sea anemones, and corals, have several unique characteristics that distinguish them from other animal groups. One of these characteristics is the use of a gastrovascular cavity as a hydrostatic skeleton. This means that the cavity, which functions both as a digestive system and as a means of circulating nutrients and oxygen throughout the body, also provides support and structure to the organism.
Under the heading of "Characteristics of Cnidarians," we can further break down the key traits of this phylum:
- Lack of true muscle tissue: While cnidarians do have contractile cells that allow them to move, they do not have the complex muscle fibers found in other animals.
- Two body forms: Cnidarians can exist in either a polyp form (which is stationary and typically attaches to a surface) or a medusa form (which is free-swimming and bell-shaped).
- Gastrovascular cavity: This cavity is the central feature of the cnidarian body, serving multiple functions including digestion, gas exchange, and circulation.
- Tentacles with stinging cells: Cnidarians have specialized cells called cnidocytes that contain tiny harpoons called nematocysts, which they use to capture prey and defend themselves against predators.
Of these characteristics, the use of a gastrovascular cavity as a hydrostatic skeleton is particularly unique to cnidarians. This means that the cavity not only helps with digestion and circulation, but also allows the organism to maintain its shape and support its body weight. This adaptation is especially important for sessile cnidarians like sea anemones, which need a stable base to anchor themselves to a surface and capture prey with their tentacles.
Under the heading of "Characteristics of Cnidarians," we can further break down the key traits of this phylum:
- Lack of true muscle tissue: While cnidarians do have contractile cells that allow them to move, they do not have the complex muscle fibers found in other animals.
- Two body forms: Cnidarians can exist in either a polyp form (which is stationary and typically attaches to a surface) or a medusa form (which is free-swimming and bell-shaped).
- Gastrovascular cavity: This cavity is the central feature of the cnidarian body, serving multiple functions including digestion, gas exchange, and circulation.
- Tentacles with stinging cells: Cnidarians have specialized cells called cnidocytes that contain tiny harpoons called nematocysts, which they use to capture prey and defend themselves against predators.
Of these characteristics, the use of a gastrovascular cavity as a hydrostatic skeleton is particularly unique to cnidarians. This means that the cavity not only helps with digestion and circulation, but also allows the organism to maintain its shape and support its body weight. This adaptation is especially important for sessile cnidarians like sea anemones, which need a stable base to anchor themselves to a surface and capture prey with their tentacles.
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Which of the following is true of members of the phylum Cnidaria?a)They are not capable of locomotion because they lack true muscle tissueb)They have either, or both, of two body forms: mobile polyps and sessile medusaec)They may use a gastrovascular cavity as a hydrostatic skeletond)They are the simplest organisms with a complete alimentary canal (two openings)Correct answer is option 'C'. Can you explain this answer?
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Which of the following is true of members of the phylum Cnidaria?a)They are not capable of locomotion because they lack true muscle tissueb)They have either, or both, of two body forms: mobile polyps and sessile medusaec)They may use a gastrovascular cavity as a hydrostatic skeletond)They are the simplest organisms with a complete alimentary canal (two openings)Correct answer is option 'C'. 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 true of members of the phylum Cnidaria?a)They are not capable of locomotion because they lack true muscle tissueb)They have either, or both, of two body forms: mobile polyps and sessile medusaec)They may use a gastrovascular cavity as a hydrostatic skeletond)They are the simplest organisms with a complete alimentary canal (two openings)Correct answer is option 'C'. 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 true of members of the phylum Cnidaria?a)They are not capable of locomotion because they lack true muscle tissueb)They have either, or both, of two body forms: mobile polyps and sessile medusaec)They may use a gastrovascular cavity as a hydrostatic skeletond)They are the simplest organisms with a complete alimentary canal (two openings)Correct answer is option 'C'. Can you explain this answer?.
Which of the following is true of members of the phylum Cnidaria?a)They are not capable of locomotion because they lack true muscle tissueb)They have either, or both, of two body forms: mobile polyps and sessile medusaec)They may use a gastrovascular cavity as a hydrostatic skeletond)They are the simplest organisms with a complete alimentary canal (two openings)Correct answer is option 'C'. 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 true of members of the phylum Cnidaria?a)They are not capable of locomotion because they lack true muscle tissueb)They have either, or both, of two body forms: mobile polyps and sessile medusaec)They may use a gastrovascular cavity as a hydrostatic skeletond)They are the simplest organisms with a complete alimentary canal (two openings)Correct answer is option 'C'. 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 true of members of the phylum Cnidaria?a)They are not capable of locomotion because they lack true muscle tissueb)They have either, or both, of two body forms: mobile polyps and sessile medusaec)They may use a gastrovascular cavity as a hydrostatic skeletond)They are the simplest organisms with a complete alimentary canal (two openings)Correct answer is option 'C'. Can you explain this answer?.
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