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Botany MCQs for NEET — Practice Questions with Answers

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Which of the following is an example of oogamous reproduction?

A. Ulothrix B. Udorina C. Spirogyra D. Fucus

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Explanation

Page number-30

3.1 Algae

Plant Kingdom

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Algae are useful

A. Because at least half of the total carbon dioxide fixation on Earth is carried out by algae through photosynthesis. B. Algae being photosynthetic can increase the level of dissolved oxygen in their immediate environment C. They are primary producers of energy rich compounds and form the basis of the food cycles of all aquatic animals D. All of the above

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Explanation

Page number-32

3.1 Algae

Plant Kingdom

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Hydrocolloid is

A. Water soluble substance B. Water holding substance C. Hydrogen gas containing substance D. Oxygen gas containing substance

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Explanation

Page number-32

3.1 Algae

Plant Kingdom

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Carrageen

A. Water holding substance B. Obtained from red algae C. Sulfated water holding substance D. All of these

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Explanation

Page number-32

3.1 Algae

Plant Kingdom

Hint: Option C is not directly mentioned in NCERT but see the cell wall composition of all algae

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Agar is not obtained from

A. Gelidium B. Gracilaria C. Volvox D. All of these

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Explanation

Page number-32

3.1 Algae

Plant Kingdom

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Which of the marine algae is not used as food?

A. Laminaria B. Sargassum C. Porphyra D. Volvox

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Explanation

Page number-32

3.1 Algae

Plant Kingdom

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Chloroplasts can be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species. Such variety can be found in

A. Chlorophyceae B. Phaeophyceae C. Rhodophyceae D. All of these

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Explanation

Page number-32

3.1.1 Chlorophyceae

Plant Kingdom

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Pyrenoid is

A. Storage bodies located in cytoplasm of chloropbyceae B. Storage bodies located in cytoplasm of Phaeophyceae C. Storage bodies located in chloroplast of chlorophyceae D. Storage bodies located in chloroplast of Phaeophyceae

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Explanation

Page number-32

3.1.1 Chlorophyceae

Plant Kingdom

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. Pyrenoid has

A. Protein+Starch B. Only Protein C. Only Starch D. Fats+ Starch

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Explanation

Page number-32

3.1.1 Chlorophyceae

Plant Kingdom

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Green algae usually have a rigid cell wall made of an inner layer of ….…. and outer layer of ………

A. Pectose, Cellulose B. Cellulose, Pectose C. Algin, carrageenan D. Carrageen, Algin

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Explanation

Page number-32

3.1.1 Chlorophyceae

Plant Kingdom

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