Tag: pteridophytes

Questions Related to pteridophytes

Identify the correct statement

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. All tracheophytes are spermatophytes

  2. All spermatophytes are thallophytes

  3. All tracheophytes are phanerogams

  4. All phanerogams are spermatophytes

Show answer
Correct Option: D
Explanation:

Tracheophytes are plants having dignified and developed vascular tissue for conducting water and minerals. Spermatophytes are plants that produce seeds. All tracheophytes are not spermatophytes (pteridophytes aren't spermatophytes). Phanerogams is however, an alternative them for spermatophytes.

So, the correct option is 'All phanerogams are spermatophytes'.

Cryptogams includes

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Thallophyta

  2. Bryophyta 

  3. Pteridophyta

  4. All of the above

Show answer
Correct Option: D
Explanation:

Cryptogams are plant or plant-like orgnaisms which reproduce by spores. Examples include algae, lichens, liverworts, mosses ferns. They do not have true flowers or seeds. They include thallophyta, bryophyta and pteridophyta. In these, reproductive organs are hidden.

Thus, the correct answer is 'All of the above.'

Function of vascular tissue is 

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. To conduct water

  2. To conduct food, salts, minerals

  3. To provide strength

  4. Both A and B

Show answer
Correct Option: D
Explanation:

Vascular tissues are also known as conductive tissue, they help to conduct water and other substances from one part of the plant body to another. For example, ferns contain two types of vascular tissue, xylem and phloem, which move nutrients throughout the plant and allow them to grow tall. 

The hard fruit-bodies produced in Marsilea are called

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Sporangia

  2. Sporophylls

  3. Ovule

  4. Sporocarps

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Correct Option: D

Which of the following are homosporous?

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Salvinia, Equisetum

  2. Salvinia, Lycopodium

  3. Selaginella, Salvinia

  4. Lycopodium, Equisetum

Show answer
Correct Option: D
Explanation:

  • Homosporous plants are those which produce spores of one kind only that are not differentiated by sex. The spores of homosporous plants grow into bisexual gametophytes, producing both male and female gametes.
  • Lycopodium is a genus of clubmosses, belonging to the family Lycopodiaceae. It contains kidney-shaped or reniform sporangia which contain spores of one kind only (homosporous) and are borne on the upper surface of the leaf blade of specialized leaves (sporophylls).
  • Equisetum is the only living genus belonging to the family Equisetaceae. They are mostly homosporous, in which spores are borne under sporangiophores.
So, the correct answer is 'Lycopodium, Equisetum'.

Sporocarp is formed in

botany kingdom plantae introduction to pteridophytes cryptogams pteridophyta pteridophytes

  1. Adiantum

  2. Marsilea

  3. Equisetum

  4. Polypodium

Show answer
Correct Option: B

Which of the following vascular plant is used in scouring and polishing of metals?

biology pictorial feature of plant kingdom pteridophytes introduction to pteridophytes cryptogams

  1. Adiantum

  2. Selaginella

  3. Dryopteris

  4. Equisetum

Show answer
Correct Option: D
Explanation:
A.Adiantum - it has medicinal value
B.Selaginella - It is used as ornamental plant
C.Dryopteris - It is also used as ornamental plant
D.Equisetum - It is used in scouring and polishing metals
So, the correct option is 'Equisetum'.

Which of the following statements is not true regarding Pteridophytes?

biology pictorial feature of plant kingdom pteridophytes introduction to pteridophytes cryptogams

  1. Some pteridophytes are heterosporous

  2. Gametes are formed after meiosis

  3. Their main plant body is diploid

  4. Sporophyte posses xylem & phloem

Show answer
Correct Option: A

Which one of the following is a correct statement?

biology pictorial feature of plant kingdom pteridophytes introduction to pteridophytes cryptogams

  1. Pteridophyte gametophyte has a protonemal and leafy stage

  2. In gymnosperms female gametophyte is free-living

  3. Antheridiophores and archegoniophores are present in pteridophytes

  4. Origin of seed habit can be traced in pteridophytes

Show answer
Correct Option: A

The most primitive vascular plants are ___________.

biology pictorial feature of plant kingdom pteridophytes introduction to pteridophytes cryptogams

  1. Cycas

  2. Ferns

  3. Moss

  4. Brown algae

Show answer
Correct Option: B
Explanation:

Most premitive vascular plants are pteridophytes.
Cycas belongs to gymnosperms. Gymnosperms have a well-differentiated plant body with vascular tissues. They produce naked seeds. Hence, option A is incorrect. 
Moss belongs to bryophytes. Bryophytes have a well-differentiated plant body with stem and leaf-like structures. But there is no specialized vascular or mechanical tissue. Therefore, option C is incorrect. 
Brown algae belong to thallophytes. Thallophytes do not have well-differentiated plant body and vascular tissues. Therefore, option D is incorrect. 
Ferns belong to pteridophytes. Pteridophytes have a well-differentiated plant body with vascular tissues. Therefore, option B is correct.