All the following are members of rhodophyceae except:
1. Polysiphonia 2. Laminaria
3. Gracilaria 4. Gelidium
Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
 94%
From NCERT
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NEET 2026 - Target Batch - Vital
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Which of the following is expected to be found in deepest waters?
1. Red algae 2. Green algae
3. Brown algae 4. Blue green algae
Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
 87%
From NCERT
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NEET 2026 - Target Batch - Vital
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Match each item in Column I with one in Column II and select the correct answer from the codes given:

Column I

Column II

A. Floridean starch

a. It is created by photosynthesis and is made up of β(1→3)-glucan with β(1→6)-branches

B. Laminarin

b. An α-linked glucose polymer with a degree of branching intermediate between amylopectin and glycogen

C. Mannitol

c. A sugar alcohol, an isomer of sorbitol

Codes

A B C
1. a b c
2. a c b
3. b a c
4. c b a
Subtopic:  Pheophyceae: Brown Algae | Rhodophyceae: Red Algae and Importance of Algae | Chlorophyceae: Green Algae |
 69%
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NEET 2026 - Target Batch - Vital
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Sexual reproduction is oogamous and accompanied by complete post-fertilization developments in the members of:

1. Chlorophyceae
2. Phaeophyceae
3. Rhodophyceae
4. Both Chlorophyceae and Phaeophyceae
Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
 77%
From NCERT
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital

Red algae photosynthesize at ocean depths greater than any other group of algae and hence can be found in deepest waters because they

1. contain a higher concentration of chlorophyll
2. have an extremely large surface area to capture the little amount of light that reaches them
3. contain the pigment phycoerythrin
4. periodically float to the surface and intercept light, then move back to the ocean floor
Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital