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Consider the following organisms:
1. Amoeba
2. Chlamydomonas
3. Hydra
4. Paramecium
Which of the above given organism is/are not a unicellular organism?
  • a)
    1 and 3 only
  • b)
    1, 2 and 4 only
  • c)
    3 only
  • d)
    2 and 4 only
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Consider the following organisms:1. Amoeba2. Chlamydomonas3. Hydra4. P...
  • A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells.
  • A single cell may constitute a whole organism as in Amoeba, Chlamydomonas, Paramoecium, and bacteria. These organisms are called unicellular organisms. Hydra on the other hand is a multi-cellular organism. Hence option (c) is the correct answer.
  • Amoeba is a unicellular organism that can change their shape. They are usually found in water bodies such as ponds, lakes, and slow-moving rivers.
  • Chlamydomonas is a genus of green algae consisting of about 150 species of unicellular flagellates, found in stagnant water and on damp soil, in freshwater, seawater, and even in snow as "snow algae".
  • Paramecium or paramecia are single-celled protists that are naturally found in aquatic habitats. They are typically oblong or slipper-shaped and are covered with short hairy structures called cilia.
  • Hydras are multicellular organisms. Hydra is a genus of small freshwater organisms in the phylum Cnidaria and class Hydrozoa. Examples of Cnidarians include jellyfish, sea anemones, corals, and hydras. They all share a feature: “using stinging cells to protect themselves or hunt for food”. They are predominantly marine species, but a smaller number of species (including hydras) are found in rivers and freshwater lakes. Hydra has a cylindrical, radially symmetric body from 2 to 20 mm in length. It is visible to the naked eye when fully extended. Typically, hydras remain attached to some underwater objects, waving their tentacles slowly with the current. This is why the hydra is often mistaken for a plant or alga. However, it is a bona fide animal.
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Consider the following organisms:1. Amoeba2. Chlamydomonas3. Hydra4. ParameciumWhich of the above given organism is/are not a unicellular organism?a)1 and 3 onlyb)1, 2 and 4 onlyc)3 onlyd)2 and 4 onlyCorrect answer is option 'C'. Can you explain this answer?
Question Description
Consider the following organisms:1. Amoeba2. Chlamydomonas3. Hydra4. ParameciumWhich of the above given organism is/are not a unicellular organism?a)1 and 3 onlyb)1, 2 and 4 onlyc)3 onlyd)2 and 4 onlyCorrect answer is option 'C'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following organisms:1. Amoeba2. Chlamydomonas3. Hydra4. ParameciumWhich of the above given organism is/are not a unicellular organism?a)1 and 3 onlyb)1, 2 and 4 onlyc)3 onlyd)2 and 4 onlyCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following organisms:1. Amoeba2. Chlamydomonas3. Hydra4. ParameciumWhich of the above given organism is/are not a unicellular organism?a)1 and 3 onlyb)1, 2 and 4 onlyc)3 onlyd)2 and 4 onlyCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Consider the following organisms:1. Amoeba2. Chlamydomonas3. Hydra4. ParameciumWhich of the above given organism is/are not a unicellular organism?a)1 and 3 onlyb)1, 2 and 4 onlyc)3 onlyd)2 and 4 onlyCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
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