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Which of the following have an open circulatory system?
(i) Arthropoda
(ii) Mollusca
(iii) Annelida
(iv) Cnidaria
- a)(i) and (ii)
- b)(i) and (iii)
- c)(ii) and (iv)
- d)(ii) and (iii)
Correct answer is option 'A'. Can you explain this answer?
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Which of the following have an open circulatory system?(i) Arthropoda...
- The open circulatory system is common to molluscs and arthropods. Open circulatory systems pump blood into a cavity (hemocoel) with the blood diffusing back to the circulatory system between cells.
- Blood is pumped by a heart into the body cavities, where blood surrounds the organs. This system lacks a true heart or capillaries. The blood found in these organisms is a mix of blood and an interstitial fluid called as hemolymph.
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Which of the following have an open circulatory system?(i) Arthropoda...
Open Circulatory System in Certain Animal Groups
Open circulatory systems are found in certain animal groups where the blood is not always enclosed within vessels. Instead, the blood flows freely within cavities called hemocoels. Let's explore which of the following animal groups have an open circulatory system:
Arthropoda (i)
- Arthropods, such as insects, spiders, and crustaceans, have an open circulatory system.
- Their blood, called hemolymph, bathes the organs directly in the hemocoel.
- The hemolymph transports nutrients and wastes throughout the body.
Mollusca (ii)
- Mollusks, including snails, clams, and octopuses, also possess an open circulatory system.
- Their hemolymph flows through sinuses and cavities, rather than enclosed vessels.
- This system helps in the distribution of nutrients and oxygen to various tissues.
Therefore, based on the information provided, the correct answer is:
a) (i) and (ii)
It is essential to understand the different types of circulatory systems in animals to comprehend their physiological adaptations and functions.
Open circulatory systems are found in certain animal groups where the blood is not always enclosed within vessels. Instead, the blood flows freely within cavities called hemocoels. Let's explore which of the following animal groups have an open circulatory system:
Arthropoda (i)
- Arthropods, such as insects, spiders, and crustaceans, have an open circulatory system.
- Their blood, called hemolymph, bathes the organs directly in the hemocoel.
- The hemolymph transports nutrients and wastes throughout the body.
Mollusca (ii)
- Mollusks, including snails, clams, and octopuses, also possess an open circulatory system.
- Their hemolymph flows through sinuses and cavities, rather than enclosed vessels.
- This system helps in the distribution of nutrients and oxygen to various tissues.
Therefore, based on the information provided, the correct answer is:
a) (i) and (ii)
It is essential to understand the different types of circulatory systems in animals to comprehend their physiological adaptations and functions.
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Which of the following have an open circulatory system?(i) Arthropoda(ii) Mollusca(iii) Annelida(iv) Cnidariaa) (i) and (ii)b) (i) and (iii)c) (ii) and (iv)d) (ii) and (iii)Correct answer is option 'A'. Can you explain this answer?
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