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Which of the following are the character...

Which of the following are the characters of dinoflagellates
A. Planktonic golden yellow alage with soap box like structure
B. Marine red biflagellated protista
C. Appear yellow, green, brown, blue and red in colour
D. Biflagellated organisms with pellicle
E. Saprophytic (or) parasitic unicellular forms

A

1,2, and 3 only

B

2,4 and 5 only

C

2 and 3 only

D

2 and 5 only.

Text Solution

AI Generated Solution

The correct Answer is:
To determine the characters of dinoflagellates from the provided options, we can analyze each statement one by one: ### Step-by-Step Solution: 1. **Analyze Option A: "Planktonic golden yellow algae with soap box like structure."** - This description refers to desmids and diatoms, which are not dinoflagellates. Dinoflagellates are not characterized as golden yellow algae with a soapbox-like structure. - **Conclusion:** This option is **incorrect**. 2. **Analyze Option B: "Marine red biflagellated protista."** - Dinoflagellates are known to be marine organisms and are indeed biflagellated. An example is Gonyaulax, which is red due to the presence of a red pigment. - **Conclusion:** This option is **correct**. 3. **Analyze Option C: "Appear yellow, green, brown, blue and red in colour."** - Dinoflagellates contain various pigments that allow them to appear in different colors, including yellow, green, brown, blue, and red. - **Conclusion:** This option is **correct**. 4. **Analyze Option D: "Biflagellated organisms with pellicle."** - While dinoflagellates are biflagellated, the term "pellicle" refers to a flexible outer membrane seen in organisms like Euglena. Dinoflagellates do not have a pellicle. - **Conclusion:** This option is **incorrect**. 5. **Analyze Option E: "Saprophytic (or) parasitic unicellular forms."** - Dinoflagellates are primarily photosynthetic and do not typically exhibit saprophytic or parasitic behavior. This characteristic is more associated with other groups like slime molds or certain protozoans. - **Conclusion:** This option is **incorrect**. ### Final Conclusion: The correct characters of dinoflagellates from the options provided are **B and C**.
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DINESH PUBLICATION ENGLISH-KINGDOM PROTISTA (UNICELLULAR EUKARYOTES)-REVISION QUESTION FROM COMPETITIVE EXAMS.
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