مندرجہ ذیل میں سے کون سا ڈنوفلیجلیٹس کی خصوصیت نہیں ہے؟
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A. Most of them are unicellular
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B. All of these
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C. They have Bloom's
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D. Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
Explanation
Dinoflagellates do have cellulose plates, but not impregnated with calcium — that’s a feature of some other protists, not typical dinoflagellates.
They are mostly unicellular and can form blooms (like red tides).
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A. cholophyta
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B. pyrrophyta
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C. phaeophyta
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D. chrysophyta
Explanation
Gonyaulax is a representative group of unicellular organisms, the Pyrrophyta (sometimes called Dinophyta).
- This is a group of mostly marine plankton, and Gonyaulax is a well-known genus within this group.
- Dinoflagellates are known for their two flagella and can be bioluminescent.
- Some species can cause harmful algal blooms, commonly known as red tides.
Phaeophyta (Brown Algae):
- These are large, mostly marine algae, such as kelp and seaweeds.
- They are not related to Gonyaulax.
Chlorophyta (Green Algae):
- These algae are mainly freshwater organisms, and some live in marine environments.
- They are not related to Gonyaulax.
Chrysophyta (Golden Algae):
- These are mostly freshwater algae
- And they are distinct from Gonyaulax.
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