Which of the following algae contains mannitol as reserve food material?

(1) Volvox

(2) Ulothrix

(3) Ectocarpus

(4) Gracilaria

Subtopic:  Pheophyceae: Brown Algae |
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Which of the following algae produce Carrageen?

(1) Red algae

(2) Blue-green algae

(3) Green algae

(4) Brown algae

Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
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Gemmae are present in:

(1) Some Gymnosperms

(2) Some Liverworts

(3) Mosses

(4) Pteridophytes

Subtopic:  Bryophytes (Liverworts) |
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Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as

1. Homosporous

2. Heterosporous 

3. Homosorus

4. Heterosorus

Subtopic:  Pteridophytes: Heterospory |
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Which of the following pairs is of unicellular algae?

 1. Gelidium and Gracilaria

2. Anabaena and Volvox

3. Chlorella and Spirulina

4. Laminaria and Sargassum

Subtopic:  Algae |
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Phycoerythrin is the major pigment in :
1. Red algae
2. Blue-green algae
3. Green algae
4. Brown algae

Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
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Which of the following statements is incorrect about gymnosperms?

1. They are heterosporous

2. Male and female gametophytes are free-living

3. Most of them have narrow leaves with thick cuticle

4. Their seeds are not covered

Subtopic:  General Accounts of Gymnosperms: II |
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Male and female gametophytes do not have an independent free-living existence in:-

1. Pteridophytes

2. Algae

3. Angiosperms

4. Bryophytes

Subtopic:  General Account of Angiosperms |
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Pinus seed cannot germinate and establish without fungal association. This is because:

1.  its seeds contain inhibitors that prevent germination.

2.  its embryo is immature.

3.  it has obligate association with mycorrhizae.

4.  it has very hard seed coat.

Subtopic:  Gymnosperms: I | General Accounts of Gymnosperms: II | Gymnosperms |
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From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in :

1. Gymnosperms

2. Liverworts

3. Mosses

4. Pteridophytes

Subtopic:  Pteridophytes: Heterospory | Pteridophytes |
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