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How many of following features are corre...

How many of following features are correct w.r.t Gonyaulax ?
Diatomaceous earth, anterior two unequal flagella, toxin kill fishes, chief producers in ocean, red tides, stiff cellulose plate
Option 1 four
Option 2 three
Option 3 six
Option 4 two

A

`4`

B

`3`

C

`6`

D

`2`

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many features are correct with respect to Gonyaulax, we will evaluate each feature listed in the question. 1. **Diatomaceous earth**: This feature is incorrect for Gonyaulax. Diatomaceous earth is characteristic of diatoms, which have a cell wall made of hydrated silica. Gonyaulax does not have this feature. **Hint**: Remember that diatomaceous earth is specifically related to diatoms, not Gonyaulax. 2. **Anterior two unequal flagella**: This feature is also incorrect. Gonyaulax, which is a dinoflagellate, has two flagella, but they are not positioned anteriorly. One flagellum is longitudinal, and the other is transverse. **Hint**: Think about the positioning of flagella in dinoflagellates compared to other groups. 3. **Toxin kills fishes**: This feature is correct. Gonyaulax produces a toxin known as saxitoxin, which is harmful and can kill fish. **Hint**: Consider the ecological impact of Gonyaulax and its toxin. 4. **Chief producers in oceans**: This feature is incorrect. While Gonyaulax is photosynthetic, the chief producers in the ocean are primarily diatoms, not Gonyaulax. **Hint**: Identify the main groups of marine producers and their characteristics. 5. **Red tides**: This feature is correct. The rapid multiplication of Gonyaulax can lead to red tides, which are characterized by a reddish discoloration of the water. **Hint**: Recall the phenomenon of red tides and which organisms are responsible for them. 6. **Stiff cellulose plate**: This feature is correct. Gonyaulax has stiff cellulose plates that form part of its structure. **Hint**: Think about the structural components of Gonyaulax and how they differ from other organisms. Now, let's summarize the correct features: - Toxin kills fishes (Correct) - Red tides (Correct) - Stiff cellulose plate (Correct) Thus, out of the six features listed, three are correct. **Final Answer**: The correct option is **Option 2: three**.
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