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Important Questions on Plant Kingdom

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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Winged pollen grains are present in
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
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>Gymnosperms
Which of the following statements is correct?
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Which of the following statements is wrong for viroids?
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Select the mismatch:
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Reason for extensive distribution of monocotyledons plants like wheat, maize and barley on the earth's surface are
I) Equal distribution of water and air in the habitat
II) Adaptation to excessive water and extensive dryness
III Do not show adaptation to extensive dryness
IV) Grow in excessive water and extensive dry areas
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms

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>Gymnosperms
Which of the following statements is incorrect?
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Mycorrhizae are the example of:
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Pinus seed cannot germinate and establish without fungal association. This is because:
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Select the wrong statement.
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
In which of the following gametophyte is not independent free living?
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Which of the following are the most suitable indicators of SO2 pollution in the environment?
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
An apple showing monosporic type of embryo sac development assumed to develop a fruit with 12 seeds. Find out the no. of chromosomes present in megaspore mother cell, functional megaspores, egg cells, synergids, antipodals, zygote and PEN
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Viroids differ from viruses in having:
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Which of the following is correct about viroids?
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
A location with luxuriant growth of lichens on the trees indicates that the:
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Which of the following statements is incorrect about gymnosperms?
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Conifers are adapted to tolerate extreme environmental conditions because of:
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Biology>Diversity in the Living World>Plant Kingdom>Gymnosperms
Select the correct statement: