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Assertion : Pinus is monoecious.

Reason : Each sporophyll bears only one microsporangia.

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Important Questions on Plant Kingdom

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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae

Arrange the following plants with their respective classes in the same order. Sphenopsida, Psilopsida, Pteropsida, Lycopsida, Gnetopsida

A) Selaginella
B) Equisitum
C) Sphagnum
D) Adiantum
E) Psilotum
F) Gnetum

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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Mycorrhizae are the example of:
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R :

Assertion A : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents.

Reason R: Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.

In the light of the above statements, choose the correct answer from the options given below:

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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Winged pollen grains are present in
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Pinus seed cannot germinate and establish without fungal association. This is because:
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Select the mismatch:
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Which of the following statements is incorrect about gymnosperms?
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
In which of the following gametophyte is not independent free living?
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Identify the plant that possess all the following characters
A) Xylem and phloem are main conducting elements.
B) Pollen grains are carried by wind.
C) Transfer of pollen is direct.
D) Ovules develop into seeds after fertilisation.
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Which of the following statements is correct?
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Conifers are adapted to tolerate extreme environmental conditions because of:
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Select the correct statement:
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
The seed of Pinus is
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
In Pinus needle vascular bundles are
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
The wing in Pinus seed originates from
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
The pollination in Pinus is
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
In Cycas
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Spur of Pinus sylvestris is
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
Siphonogamous fertilization takes place in
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Biology>Diversity in The Living World>Plant Kingdom>Subdivision Gymnospermae
A. Siphonogamy is found in Pinus.
B. Stem branches are monomorphic in Pinus.
C. Wood is monoxylic and manoxylic in Pinus.