Which of the following genera is associated with coralloid roots?

(1) Cycas

(2) Taxus

(3) Pinus

(4) Sequoia

Subtopic:  Gymnosperms: I | Gymnosperms |
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Match the following selected the correct option.

 

Column - I

 

Column - II

A.

Pteris

(i)

Gymnosperm

B.

Cycas

(ii)

Bryophyte

C. 

Sphagnum     

(iii)   

Algae

D.

Sargassum

(iv)

Pteridophyta

(1) A - (iv), B - (ii), C - (i), D - (iii)

(2) A - (iv), B - (i), C - (ii), D - (iii)

(3) A - (ii), B - (iii), C - (iv), D - (i)

(4) A - (i), B - (iv), C - (iii), D - (ii)

Subtopic:  Algae | Bryophytes | Gymnosperms: I | Pteridophytes | Gymnosperms |
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Which of the following groups of algae produces algin?

(1) Phaeophyceae and Chlorophyceae

(2) Rhodophyceae and Phaeophyceae

(3) Chlorophyceae and Rhodophyceae

(4) Phaeophyceae only

Subtopic:  Pheophyceae: Brown Algae |
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Which of the following are homosporous pteridophytes?

I. Selaginella

II. Lycopodium

III. Salvinia

IV. Equisetum

(1) I and IV only

(2) II and III only

(3) II and IV only

(4) III and IV only

Subtopic:  Pteridophytes |
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Pick the correct group consisting of all genera exhibiting homospory.

(1) Lycopodium, Psilotum, Selaginella, Equisetum

(2) Equisetum, Pteris, Salvinia, Psilotum

(3) Salvinia, Pteris, Lycopodium, Selaginella

(4) Equisetum, Psilotum, Lycopodium, Pteris

Subtopic:  Pteridophytes |
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In the given diagrams, some of the algae have been labelled as A, B, C, D and E. Choose the correct option to identify these algae.

 

A

B

C

D

E

(1)

Dictyota

Polysi-

phonia 

Porphyra

Fucus

Laminaria

(2)

Porphyra

Dictyota

Laminaria

Fucus

Polyspi-

phonia

(3)

Dictyota

Polysi-

phonia

Porphyra

Laminaria

Fucus

(4)

Fucus

Porphyra

Dictyota

Polysi-

phonia 

Laminaria

 

Subtopic:  Chlorophyceae: Green Algae: I | Pheophyceae: Brown Algae | Rhodophyceae: Red Algae and Importance of Algae | Chlorophyceae: Green Algae |
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Classical Taxonomy is based on

(1) morphological traits

(2) habitat of organisms

(3) similarities and dissimilarities of behaviour

(4) phylogeny

Subtopic:  Classification System: I | Classification System |
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Read the following statements reagrding bryophytes and choose the incorrect option.

(1) Gametophytic phase is dominant in life cycle

(2) Fertilisation takes place in presence of water

(3) Zygote undergoes meiosis to produce sporophyte

(4) Sporophyte isphysiologically dependent on gametophyte

Subtopic:  Bryophytes |
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Gelatin, an important raw material for preparation of photographic emulsion is a by product of

(1) chicken

(2) forest

(3) cattle

(4) fish

Subtopic:  Algae |
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Phylogenetic system of classification includes

(1) evolutionary trends only

(2) genetic trends only

(3) evolutionary trend as well as morphology

(4) behavioural trends in environment

Subtopic:  Classification System: I | Classification System |
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