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 |
 86%
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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 |
 85%
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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 Polysiphonia  Porphyra Fucus Laminaria
2. Porphyra Dictyota Laminaria Fucus Polyspiphonia
3. Dictyota Polysiphonia Porphyra Laminaria Fucus
4. Fucus Porphyra Dictyota Polysiphonia  Laminaria
Subtopic:  Chlorophyceae: Green Algae: I | Pheophyceae: Brown Algae | Rhodophyceae: Red Algae and Importance of Algae | Chlorophyceae: Green Algae |
 75%
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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 |
 56%
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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 |
 71%
From NCERT
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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 |
 60%
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Match items in Column I with those in Column II.

 

Column I

 

Column II

A.

Peritrichous flagella

1.

Ginkgo

B.

Living fossil

2.

Macrocystis

C. 

Rhizophore

3.

E.coli

D.

Smallest flowering plant    

4.

Selaginella

E.

Largest perennial alga

5.

Wolffia

 

 

A   

B   

C   

D   

E

(1)

3

1

4

5

2

(2)

2

3

4

1

5

(3)

4

2

1

5

3

(4)  

2

4

3

5

1

 75%
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Cycas is classified as a gymnosperms due to its

1. motile sperms

2. fruit formation

3. naked ovule

4. pycnoxylic wood

Subtopic:  Gymnosperms: I | Gymnosperms |
 90%
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Elater mechanism for seed dispersal is exhibited by

(1) Riccia

(2) Marchantia

(3) Dryopteris

(4) Funaria

Subtopic:  Bryophytes (Liverworts) |
 61%
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