Tag: kingdom plantae

Questions Related to kingdom plantae

Stem of Selaginella has

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Siphonostele

  2. Protostele

  3. Ectophloic siphonostele

  4. Amphiphloic siphonostele

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Correct Option: B

Plant body of Selaginella is

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Sporophyte

  2. Gametophyte

  3. Halophyte

  4. Both B and C

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Correct Option: A

Botanical name of Sanjeevani is

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Selaginella chrysocaulos

  2. Selaginella bryopteris

  3. S. chrysorhizos

  4. None of the above

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Correct Option: B

Rudimentary seed habit occurs in

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Lycopodium

  2. Selaginella

  3. Psilotum

  4. Equisetum

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Correct Option: B

Selaginella leaf possesses an outgrowth proximally on the adaxial surface. It is

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Ligule

  2. Indusium

  3. Stipule

  4. Petiole

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Correct Option: A

Selaginella multiplies vegetatively through

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Tubers

  2. Resting buds

  3. Fragmentation

  4. All the above

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Correct Option: D

Heteromorphic alternation of generations occurs in

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Dictyota

  2. Selaginella

  3. Rhizopus

  4. Spirogyra

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Correct Option: B

In Selaginella, the male gametes are

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Uniflagellate

  2. Biflagellate

  3. Non-flagellate

  4. Multiflagellate

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Correct Option: B

A pteridophyte having pyrenoid in its chloroplasts is

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Pteridium

  2. Selaginella

  3. Equisetum

  4. Marsilea

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Correct Option: B

Selaginella sperms swim towards archegonia. The phenomenon is

classification of pteridophytes kingdom plantae plant kingdom biology

  1. Chemotaxis

  2. Chemotropism

  3. Chemonasty

  4. Thigmonasty

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Correct Option: A
Explanation:

Chemotaxis is the movement shown by organism in the direction of the external chemical stimuli. In Selaginella, sperm sense the chemoattractant and orient its swimming towards the archegnonia. Chemotropism is the growth movement shown by organism in the direction of the external chemical stimuli. Chemonasty is the nastic movement shown by organism in response to the external chemical stimuli. Spermatozoa can sense this chemoattractant and orient their swimming direction up the concentration gradient towards the egg cell located in the venter of archegonia

So, the correct answer is 'Chemotaxis'