Pinus seeds 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 an obligate association with mycorrhizae.

4. it has a very hard seed coat.

Subtopic:  Gymnosperms |
 89%
From NCERT
NEET - 2019
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From an 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 |
 73%
From NCERT
NEET - 2019
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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 |
 77%
From NCERT
NEET - 2020
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Floridian starch has structure similar to :

1. Amylopectin and glycogen

2. Mannitol and algin

3. Laminarin and cellulose

4. Starch and cellulose

Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
 79%
From NCERT
NEET - 2020
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Strobili or cones are found in:

1.  Pteris

2.  Marchantia

3.  Equisetum

4.  Salvinia 

Subtopic:  Pteridophytes |
 70%
From NCERT
NEET - 2020
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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 |
 84%
From NCERT
NEET - 2020
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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 cuticles

4. Their seeds are not covered

Subtopic:  Gymnosperms |
 74%
From NCERT
NEET - 2020
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Which of the following algae contains mannitol as reserve food material?

1. Volvox

2. Ulothrix

3. Ectocarpus

4. Gracilaria

Subtopic:  Pheophyceae: Brown Algae |
 80%
From NCERT
NEET - 2021
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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 |
 83%
From NCERT
NEET - 2021
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Gemmae are present in:

1. Some Gymnosperms

2. Some Liverworts

3. Mosses

4. Pteridophytes

Subtopic:  Bryophytes (Liverworts) |
 79%
From NCERT
NEET - 2021
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