Besides paddy fields, cyanobacteria are also found inside vegetative part of

(1) Pinus

(2) Cycas

(3) Equisetum

(4) Psilotum

Subtopic:  General Accounts of Gymnosperms: II | Examples of Gymnosperms | Gymnosperms |
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Read the following statements (IV) and answer the question which follows them

I. In liverworts, mosses and ferns gametophytes are free living.

II. Gymnosperms and some ferns are heterospores.

III. Sexual reproduction in Fucus, Volvox and Albugo is oogamous.

IV. The sporophyte in liverworts is more elaborate than that in mosses.

How many of the above statements are correct?

(1) One

(2) Two

(3) Three

(4) Four

Subtopic:  Algae | Bryophytes (Liverworts) | Gymnosperms: I | Gymnosperms |
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Meiosis takes place in

(1) Meiocyte

(2) Conidia

(3) Gemmule

(4) Megaspore

Subtopic:  Life Cycle Patterns in Plants |
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Cycas and Adiantum resemble each other in having

(1) seeds

(2) motile sperms

(3) cambium

(4) vessels

Subtopic:  Examples of Gymnosperms |
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Which one of the following is a correct statement?

(1) Pteridophyte gametophyte has a protonemal and leafy stage

(2) In gymnosperms female gametophyte is free-living

(3) Antheridiophores and archegoniophores are present in pteridophytes

(4) Origin of seed habit can be traced in pteridophytes

Subtopic:  Classification of Pteridophytes: I | Classification of Pteridophytes |
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Gymnosperms are also called soft wood spermatophytes because they lack

(1) cambium

(2) phloem fibres

(3) thick-walled tracheids

(4) xylem fibres

Subtopic:  General Accounts of Gymnosperms: II | Gymnosperms |
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Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tends to be

(1) larger but to have smaller sex organs

(2) larger and to have large sex organs

(3) smaller and to have smaller sex organs

(4) smaller but to have larger sex organs

Subtopic:  Pteridophytes: Heterospory |
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The gametophyte is not an independent, free living generation in

(1) Adiantum

(2) Marchantia

(3) Pinus

(4) Polytrichum

Subtopic:  General Accounts of Gymnosperms: II | Gymnosperms |
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Archegoniophore is present in

(1) Chara

(2) Adiantum

(3) Funaria

(4) Marchantia

Subtopic:  Bryophytes |
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A prokaryotic autotrophic nitrogen fixing symbiont is found in

(1) Cycas

(2) Cicer

(3) Pisum

(4) Alnus

 

Subtopic:  Examples of Gymnosperms |
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