(A) $Dryopteris$ is a pteridophyte. In the life cycle of pteridophytes,the main plant body is a sporophyte $(2n)$. Spores are produced within sporangi

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(A) $Dryopteris$ is a pteridophyte. In the life cycle of pteridophytes,the main plant body is a sporophyte $(2n)$. Spores are produced within sporangia by the process of meiosis. Since meiosis is a reduction division,the resulting spores are always haploid $(n)$.

Class 11 Biology Plant Kingdom Pteridophytes (General)

Medium

Spores of $Dryopteris$ are

A
Haploid
B
Diploid
C
Triploid
D
Tetraploid

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Plant Kingdom

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Pteridophytes (General)

The first evolution of the seed habit occurred in which of the following?

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Statement $X :$ $Selaginella$ is a heterosporous,gymnosperm plant.
Statement $Y :$ It produces two different types of spores.

Medium

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Photosynthetic sporophylls are found in . . . . . . .

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Which of the following is an inconsistent option regarding asexual reproduction in Pteridophytes?

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Leaf of which of the following plants shows circinate vernation at the young stage?

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Spores of $Dryopteris$ are

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The first evolution of the seed habit occurred in which of the following?

Statement $X :$ $Selaginella$ is a heterosporous,gymnosperm plant.Statement $Y :$ It produces two different types of spores.

Photosynthetic sporophylls are found in . . . . . . .

Which of the following is an inconsistent option regarding asexual reproduction in Pteridophytes?

Leaf of which of the following plants shows circinate vernation at the young stage?

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Statement $X :$ $Selaginella$ is a heterosporous,gymnosperm plant.
Statement $Y :$ It produces two different types of spores.