UPSC Exam > UPSC Questions > Consider the following statements:1. Amoeba2...
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Consider the following statements:
1. Amoeba
2. Paramecium
3. Hen’s egg
4. White blood cells (WBCs)
Which of the above are examples of unicellular bodies?
- a)1 and 2 only
- b)3 and 4 only
- c)1, 2 and 4 only
- d)1, 2, 3 and 4
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements:1. Amoeba2. Paramecium3. Hen’s egg4...
- An organism consisting of one cell is called unicellular. Amoeba, paramecium, hen’s egg and White Blood Cells are all examples of unicellular organisms.
- Organisms made up of more than one cell are called multicellular. In unicellular organisms, the single cell itself performs all the activities that multicellular organisms do, like respiration, growth, excretion, reproduction, etc; which are performed by groups of tissues in multicellular organisms.
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Consider the following statements:1. Amoeba2. Paramecium3. Hen’s egg4...
Understanding Unicellular and Multicellular Organisms
Unicellular organisms consist of a single cell that performs all necessary functions for life. In contrast, multicellular organisms are made up of multiple cells that may have specialized functions.
Examples of Unicellular Organisms
- Amoeba:
A well-known unicellular organism, amoeba is a protozoan that moves and feeds through pseudopodia. It thrives in various aquatic environments.
- Paramecium:
Another unicellular organism, paramecium is a ciliated protozoan. It has a complex structure with specialized organelles, allowing it to move and feed efficiently.
Examples of Multicellular Organisms
- Hen’s Egg:
A hen's egg is a multicellular structure, containing both the yolk and the egg white, which support the developing embryo.
- White Blood Cells (WBCs):
WBCs are part of the immune system and are multicellular components of the human body. They work together to protect against infections.
Correct Interpretation of the Options
The question asks for unicellular bodies. Upon analyzing:
- Amoeba and Paramecium are unicellular.
- Hen's egg and WBCs are multicellular.
The correct answer to the question is not option 'D' since it incorrectly categorizes multicellular organisms as unicellular. The accurate answer is:
- Option a) 1 and 2 only (Amoeba and Paramecium).
In summary, amoeba and paramecium are unicellular, while a hen's egg and WBCs are not. Understanding these distinctions is crucial for biological classification.
Unicellular organisms consist of a single cell that performs all necessary functions for life. In contrast, multicellular organisms are made up of multiple cells that may have specialized functions.
Examples of Unicellular Organisms
- Amoeba:
A well-known unicellular organism, amoeba is a protozoan that moves and feeds through pseudopodia. It thrives in various aquatic environments.
- Paramecium:
Another unicellular organism, paramecium is a ciliated protozoan. It has a complex structure with specialized organelles, allowing it to move and feed efficiently.
Examples of Multicellular Organisms
- Hen’s Egg:
A hen's egg is a multicellular structure, containing both the yolk and the egg white, which support the developing embryo.
- White Blood Cells (WBCs):
WBCs are part of the immune system and are multicellular components of the human body. They work together to protect against infections.
Correct Interpretation of the Options
The question asks for unicellular bodies. Upon analyzing:
- Amoeba and Paramecium are unicellular.
- Hen's egg and WBCs are multicellular.
The correct answer to the question is not option 'D' since it incorrectly categorizes multicellular organisms as unicellular. The accurate answer is:
- Option a) 1 and 2 only (Amoeba and Paramecium).
In summary, amoeba and paramecium are unicellular, while a hen's egg and WBCs are not. Understanding these distinctions is crucial for biological classification.
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Consider the following statements:1. Amoeba2. Paramecium3. Hen’s egg4. White blood cells (WBCs)Which of the above are examples of unicellular bodies?a) 1 and 2 onlyb) 3 and 4 onlyc) 1, 2 and 4 onlyd) 1, 2, 3 and 4Correct answer is option 'D'. Can you explain this answer?
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