EASY
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Which option is not related with Gymnosperm?

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Important Questions on Plant Kingdom

MEDIUM

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

MEDIUM
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.
HARD
Which of the following statements is correct?
MEDIUM
Which of the following statements is incorrect about gymnosperms?
MEDIUM

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:

MEDIUM
In which of the following gametophyte is not independent free living?
MEDIUM
Pinus seed cannot germinate and establish without fungal association. This is because:
MEDIUM
Conifers are adapted to tolerate extreme environmental conditions because of:
MEDIUM
Popular dry fruit "chilgoza'' is produced by
EASY
Meroblastic type of embryo development takes place in
MEDIUM
Pollination of pollen grains in Pinus takes place at
EASY
Which among the following is the most evolved?
EASY
The needle-like foliage leaves are found in
EASY
Antheridia and archegonia are most reduced in