Read the following five statements (I to V) and select the option with all correct statements.

I. Mosses and lichens are the first organisms to colonise a bare rock.

II. Selaginella is a homosporous pteridophyte.

III. Coralloid roots in Cycas have VAM.

IV. main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.

V. In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

(1) I, III and IV

(2) II, III and IV

(3) I, IV and V

(4) II, III and V

Concept Questions :-

Gymnosperms: I
Pteridophytes
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Zygotic meiosis is characteristic of

(1) Marchantia

(2) Fucus

(3) Funaria

(4) Chlamydomonas

Concept Questions :-

Life Cycle Patterns in Plants
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An example of colonial alga is

(1) Chlorella

(2) Volvox

(3) Ulothrix

(4) Spirogyra

Concept Questions :-

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Select the mismatch

(1)

Pinus

Dioecious

(2)

Cycas

Dioecious

(3)

Salvinia

Heterosporous

(4)  

Equisetum     

Homosporous

Concept Questions :-

Examples of Gymnosperms
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Double fertilisation is exhibited by

(1) gymnosperms

(2) algae

(3) fungi

(4) angiosperms

Concept Questions :-

General Account of Angiosperms
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Life cycle of Ectocarpus and Fucus respectively are

(1) Haplontic, Diplontic

(2) Diplontic, Haplodiplontic

(3) Haplodiplontic, Diplontic

(4) Haplodiplontic, Haplontic

Concept Questions :-

Life Cycle Patterns in Plants
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Conifers are adapted to tolerate extreme environmental conditions because of

(1) broad hardy leaves

(2) superficial stomata

(3) thick cuticle

(4) the presence of vessels

Concept Questions :-

Examples of Gymnosperms
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Which one of the following statements is wrong?

(1) Algae increases the level of dissolved oxygen in the immediate environment

(2) Algin is obtained from red algae and ccarrageenan from brown algae

(3) Agar-agar is obtained from Gelidium and Gracilaria

(4) Laminaria and Sargassum are used as food

Concept Questions :-

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In bryophytes and pteriodophytes, transport of male gametes requires

1. insects

2. birds

3. water

4. wind

Concept Questions :-

Pteridophytes: Heterospory
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Select the correct statement.

(1) Salvinia, Ginkgo and Pinus all are gymnosperms

(2) Sequoia is one of the tallest trees

(3) The leaves of gymnosperms are not well adapted to extremes of climate

(4) Gymnosperms are both homosporous and heterosporous

Concept Questions :-

General Accounts of Gymnosperms:II
Examples of Gymnosperms
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