Tag: pteridophytes

Questions Related to pteridophytes

Consider the following statements.
a. In Pteridophytes, the phloem lacks companion cells
b. The xylem lacks vessels in majority of Pterifophytes
c. Heterosporous Pteridophytes have inconspicuous gametophytes
d. Water is essential for fertilization in Pteridophytes.
Which of these statements are correct?

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. $1, 2, 3$ and $4$

  2. $2, 3$ and $4$

  3. $1$ and $3$

  4. $1, 2$ and $4$

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Correct Option: A

Heterospory and ligulate leaves are the characteristic features of ____________.

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Lycopodium

  2. Equisetum

  3. Selaginella

  4. Adianthum

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Correct Option: A

You discover a new species of a plant. You discover that it produces motile sperms and dominant generation has diploid cells. It belongs to

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Bryophyte

  2. Angiosperm

  3. Gymnosperm

  4. Pteridophyte

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Correct Option: D
Explanation:
Amongst Bryophytes, Pteridophytes, Gymnosperms and Angiosperms, only bryophytes and pteridophytes produce motile sperms which swim in the surrounding medium to reach female gamete for the process of fertilisation. While. in pteridophytes only the dominant generation is diploid. The dominant generation in bryophytes is haploid.
So, the correct answer is 'Option D- Pteridophytes'.

Which one of the following is a vascular cryptogram ?

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Cedrus

  2. Equisetum

  3. Ginkgo

  4. Marchantia

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Correct Option: B

If the root cell of a pteridophyte contains 10 chromosomes, then the chromosome number in indusium, sperm mother cell and spore mother cell are respectively.

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. 10,5,10

  2. 10,5,5

  3. 10,10,10

  4. 5,10,10

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Correct Option: A

Find the odd man.

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Adiantum

  2. Equisetum

  3. Selaginella

  4. Riccia

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Correct Option: A

Sporangiosphores of Equisetum are ___________.

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Peltate

  2. Whorled

  3. Stalked

  4. All the above

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Correct Option: A

Lycopodium is ______________.

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Heterosporous

  2. Homosporous

  3. Water Ferm

  4. Both B and C

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Correct Option: A

Protocorm stage occurs in _________________.

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Young gametophyte of Lycopodium

  2. Young gametophyte of Selaginella

  3. Young sporophyte of Selaginella

  4. Young sporophyte of Lycopodium

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Correct Option: A

Joined green stem occurs in _____________.

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Lycopodium

  2. Saleginella

  3. Equisetum

  4. Pteridium

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Correct Option: A