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State whether the following statement is True or False:
Animals like sponges and Hydra have blood circulating in their bodies.
- a)True
- b)False
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
State whether the following statement is True or False:Animals like sp...
No, animals such as sponges and Hydra do not have blood flowing in their bodies. They live in water, which brings them food and oxygen, and takes away waste and carbon dioxide. So, these animals do not need blood like we do.
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State whether the following statement is True or False:Animals like sp...
Understanding Circulation in Animals
Animals exhibit a variety of circulatory systems, but not all have blood circulating in the same way as mammals or other higher organisms.
Sponges and Hydra: Basic Characteristics
- Sponges:
- They belong to the phylum Porifera and are the simplest multicellular animals.
- Sponges lack true tissues and organs, including a circulatory system.
- They filter water through their porous bodies to obtain nutrients and oxygen, relying on the movement of water for internal transport.
- Hydra:
- Hydra is a simple organism from the phylum Cnidaria.
- They possess a basic body plan with a gastrovascular cavity.
- This cavity serves both digestive and circulatory functions, but it is not a blood circulatory system.
What is Blood Circulation?
- Definition:
- Blood circulation refers to the movement of blood through a network of vessels, powered by a heart.
- Presence in Higher Animals:
- Higher organisms, such as mammals, birds, and reptiles, have a complex circulatory system with blood vessels and a heart.
Conclusion
In summary, sponges and Hydra do not have blood or a circulatory system as seen in higher organisms. Instead, they utilize simpler methods for nutrient and gas exchange, which is why the correct answer is option 'B' (False).
Animals exhibit a variety of circulatory systems, but not all have blood circulating in the same way as mammals or other higher organisms.
Sponges and Hydra: Basic Characteristics
- Sponges:
- They belong to the phylum Porifera and are the simplest multicellular animals.
- Sponges lack true tissues and organs, including a circulatory system.
- They filter water through their porous bodies to obtain nutrients and oxygen, relying on the movement of water for internal transport.
- Hydra:
- Hydra is a simple organism from the phylum Cnidaria.
- They possess a basic body plan with a gastrovascular cavity.
- This cavity serves both digestive and circulatory functions, but it is not a blood circulatory system.
What is Blood Circulation?
- Definition:
- Blood circulation refers to the movement of blood through a network of vessels, powered by a heart.
- Presence in Higher Animals:
- Higher organisms, such as mammals, birds, and reptiles, have a complex circulatory system with blood vessels and a heart.
Conclusion
In summary, sponges and Hydra do not have blood or a circulatory system as seen in higher organisms. Instead, they utilize simpler methods for nutrient and gas exchange, which is why the correct answer is option 'B' (False).
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State whether the following statement is True or False:Animals like sponges and Hydra have blood circulating in their bodies.a)Trueb)FalseCorrect answer is option 'B'. Can you explain this answer?
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State whether the following statement is True or False:Animals like sponges and Hydra have blood circulating in their bodies.a)Trueb)FalseCorrect answer is option 'B'. Can you explain this answer? for Grade 7 2025 is part of Grade 7 preparation. The Question and answers have been prepared according to the Grade 7 exam syllabus. Information about State whether the following statement is True or False:Animals like sponges and Hydra have blood circulating in their bodies.a)Trueb)FalseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Grade 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for State whether the following statement is True or False:Animals like sponges and Hydra have blood circulating in their bodies.a)Trueb)FalseCorrect answer is option 'B'. Can you explain this answer?.
State whether the following statement is True or False:Animals like sponges and Hydra have blood circulating in their bodies.a)Trueb)FalseCorrect answer is option 'B'. Can you explain this answer? for Grade 7 2025 is part of Grade 7 preparation. The Question and answers have been prepared according to the Grade 7 exam syllabus. Information about State whether the following statement is True or False:Animals like sponges and Hydra have blood circulating in their bodies.a)Trueb)FalseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Grade 7 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for State whether the following statement is True or False:Animals like sponges and Hydra have blood circulating in their bodies.a)Trueb)FalseCorrect answer is option 'B'. Can you explain this answer?.
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