Consider the following statements regarding brown algae:

I. The pigments are chl a, c and xanthophylls, fucoxanthin
II. Storage food is laminarin and mannitol
III. The cellulosic cell wall is covered with algin
IV. They have a centrally located vacuole
V. Their photosynthetic organs are called as fronds - leaf like structures
VI. They have pear shaped biflagellate zoospores
VII. They have two unequal laterally attached flagella.

The number of correct statements is

1. 5

2. 6

3. 7

4. 4

Subtopic:  Pheophyceae: Brown Algae |
 61%
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Consider the following adaptations seen in plants:

I. Lack of cuticle

II. Presence of stomata for exchange of gases

III. Evolution of leaf

IV. Dominance of sporophyte

V. Structural support of vascular tissue

Which of the above adaptations would be required in a plant if it has to be successfully adapted to life on land?

1. All but I

2. All but I and III

3. I, II, III and IV

4. All

Subtopic:  Classification System: I | Classification System: II | Classification System |
 52%
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Identify the incorrect statement regarding mosses:

1. Leaves are one cell thick except at the midrib and lack stomata
2. The first gametophyte stage is protonema that is creeping and green
3. The second stage is the leafy stage, which develops from the secondary protonema as a lateral bud.
4. Rhizoids are elongated and unicellular
Subtopic:  Bryophytes | Bryophytes (Anthoceropsida) |
 66%
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Consider the following statements regarding bryophytes:

I. Bryophytes are also called amphibians of the plant kingdom because they are dependent on water for sexual reproduction.

II. They play an important role in plant succession on bare rocks.

III. They lack true roots, stem or leaves.

IV. The sex organs in bryophytes are multicelluar.

V. They produce biflagellate zoospres.

VI. Archegonium is flask-shaped and produces a single egg.

The number of corrected statements is

1. 3

2. 4

3. 5

4. 6

Subtopic:  Bryophytes |
From NCERT
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Which of the following statements regarding gymnosperms are correct?

I. Ovules are naked - not enclosed by any ovary wall before fertilisation but seeds that develop after fertilisation are covered.

II. In all living Gymnosperms, sporophyte is dominant over the gametophyte.

III. They are heterosporous.

IV. The male and female gametophytes do not have an independent existence.

1. I, II and III

2. I, III and IV

3. II, III and IV

4. I, II, III and IV

Subtopic:  General Accounts of Gymnosperms: II | Gymnosperms |
 70%
From NCERT
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Which of the following algae is likely to be found in the deepest waters?

(1) Green

(2) Brown

(3) Red

(4) All are found at equal depths

Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
 85%
From NCERT
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Which pair[s] is/are in incorrectly matched?

I. Phaeophyceae - Algin in cell wall

II. Chlorophyceae - Laminarin is stored food

III. Rhodophyceae - 2, unequal, lateral flagella

(1) Only II

(2) Only III

(3) I and II only

(4) II and III only

Subtopic:  Chlorophyceae: Green Algae: I | Pheophyceae: Brown Algae | Rhodophyceae: Red Algae and Importance of Algae | Chlorophyceae: Green Algae |
 75%
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The gemmae produced by some liverworts function as:

(1) A water gathering structure

(2) A light capturing structure

(3) A sexual structure

(4) An asexual structure

Subtopic:  Bryophytes (Liverworts) |
 77%
From NCERT
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All the following differentiate gymnosperms from the higher cryptogams except:

(1) Presence of an independent green gametophyte

(2) development of an ovule

(3) Formation of the pollen tube

(4) Presence of cambium

Subtopic:  Gymnosperms: I | General Accounts of Gymnosperms: II | Gymnosperms |
 50%
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Heterosporous pteridophyte includes both:

1. Lycopodium and Equisetum

2. Selaginella and Salvinia

3. Psilotum and Phylloglossum

4. Selaginella and Equisetum

Subtopic:  Pteridophytes: Heterospory |
 86%
From NCERT
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