NEET-UG Biology · Class 11
Algae - the three classes and their pigments — NEET & JEE Questions
Algae - the three classes and their pigments is a topic in Plant Kingdom, a Class 11 Biology chapter of the NEET-UG syllabus. TestBudy holds 17 published NEET-UG questions on Algae - the three classes and their pigments, each with the marking scheme of the real paper.
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Algae - the three classes and their pigments MCQs with solutions
10 of the 17 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Which pigment gives brown algae their characteristic colour?
- A. Chlorophyll b
- B. Fucoxanthin
- C. Phycoerythrin
- D. Anthocyanin
Which feature best distinguishes red algae from green algae in terms of their major accessory pigments?
- A. Red algae contain phycoerythrin, whereas green algae characteristically contain chlorophyll b
- B. Red algae contain fucoxanthin, whereas green algae contain phycoerythrin
- C. Red algae lack chlorophyll, whereas green algae contain chlorophyll a
- D. Red algae contain carotene only, whereas green algae lack carotenoids
Chlorophyceae are commonly called green algae mainly because their dominant pigments include
- A. chlorophyll a and chlorophyll b
- B. chlorophyll a and fucoxanthin
- C. chlorophyll a and phycoerythrin
- D. only carotene
The brown colour of Phaeophyceae is mainly due to the accessory pigment
- A. fucoxanthin
- B. phycoerythrin
- C. chlorophyll b
- D. anthocyanin
An alga collected from deeper marine water appears red because it can use wavelengths that penetrate to greater depths. Which group is the best match?
- A. Rhodophyceae
- B. Phaeophyceae
- C. Chlorophyceae
- D. Bryophyta
Read the following statements and choose the set of correct statements: In the members of Phaeophyceae, A. Asexual reproduction occurs usually by biflagellate zoospores. B. Sexual reproduction is by oogamous method only. C. Stored food is in the form of carbohydrates which is either mannitol or laminarin. D. The major pigments found are chlorophyll a, c and carotenoids and xanthophyll. E. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin. Choose the correct answer from the options given below:
- A. A, B, C and D only
- B. B, C, D and E only
- C. A, C, D and E only
- D. A, B, C and E only
Which classes of algae possess pigment fucoxanthin and pigment phycoerythrin, respectively ?
- A. Phaeophyceae and Chlorophyceae
- B. Phaeophyceae and Rhodophyceae
- C. Chlorophyceae and Rhodophyceae
- D. Rhodophyceae and Phaeophyceae
Hydrocolloid carrageen is obtained form :
- A. Chlorophyceae and Phaeophyceae
- B. Phaeophyceae and Rhodophyceae
- C. Rhodophyceae only
- D. Phaeophyceae only
Which of the following is incorrectly matched?
- A. Ectocarpus - Fucoxanthin
- B. Ulothrix - Mannitol
- C. Porphyra - Floridian Starch
- D. Volvox - Starch
Which of the following algae produce Carrageen?
- A. Blue-green algae
- B. Green algae
- C. Brown algae
- D. Red algae
Common mistakes in Algae - the three classes and their pigments
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Remembering one characteristic correctly but mismatching it with the wrong algal class.
- Uses body colour alone without recognising the diagnostic pigment combination.
- Confuses chlorophyll c plus fucoxanthin with green-algal chlorophyll b.
- Interchanges the diagnostic accessory pigments among algal classes.
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