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4

In Ulothrix, reduction division takes place at the time of

A. germination of zygote

B. formation of spores

C. formation of gametes

D. formation of zoospores

Correct Answer :

A. germination of zygote


Related Questions

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What is the storage product of most algae?

A. Cellulose

B. Glycogen

C. Starch and oil

D. Fat

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Filaments of Ulothrix are

A. branched

B. unbranched

C. brick-shaped

D. girdle-shaped

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Sea-lettuce is the common name for

A. Lamitiaria

B. Sargassum

C. Batrachospermun

D. Ulva

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'Pond Silk' is the common name for

A. Spirogyra

B. Chlamydomonas

C. Anabaena

D. Nostoc

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The food reserve in blue green algae is

A. cyanophycean starch

B. globulin

C. fats and oils

D. cellulose

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Which one of the following algae is a source of iodine ?

A. Polysiphonia

B. Laminaria

C. Nostoc

D. Diatoms

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Pyrenoids are found in which of the following organs of Spirogyra:

A. Nucleus

B. Cytoplasm

C. Chloroplast

D. Cell wall

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Cyanobacteria name has been given to

A. Mycoplasma

B. Myxophyceae

C. Myxomycetes

D. Schizomycetes

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Asexual reproduction in Spirogyra

A. takes place by zoospore formation

B. has not been recorded

C. takes place by hypnospore formation

D. takes place by aplanospore formation

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Fucoxanthin is found in

A. brown algae

B. green algae

C. red algae

D. blue-green algae

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The algae which help in the fixation of nitrogen belongs to class

A. Rhodophyceae

B. Cyanophyceae

C. Chlorophyceae

D. Phaeophyceae

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Fusing gametes in Ulothrix are

A. morphologically and physiologically different

B. physiologically different

C. morphologically different

D. morphologically similar physiologically different

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Parasitic alga is

A. Cephaleuros

B. Ulothrix

C. Spirogyra

D. Chlamydomonas

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Which of the following is a larvicidal alga?

A. Chlorella

B. Oscillatoria

C. Chlamydomonas

D. Spirogyra

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The food reserve is fat/oil in

A. Xanthophyceae

B. Phodophyceae

C. Aplanospore

D. None of these

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Heterocysts are found in

A. Nostoc

B. Cystopus

C. Ulothrix

D. Aspergillus

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The red snow balls of alpine regions are due to the growth of

A. Oscillatoria

B. batrachospermum

C. Sargassum

D. Haemalococcus

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The blue-green algae belong to

A. Eukaryota

B. Prokaryota

C. Myxomycetes

D. None of these

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Which of the following produces non-motile gametes ?

A. Cladophora

B. Ulothrix

C. Spirogyra

D. Anabaena

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The red alga devoid of red pigment is

A. Gracilaria

B. Batrachospermum

C. Polysiphonia

D. Laminaria

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Which is a rich source of protein ?

A. Nostoc

B. Anabaena

C. Spirulitia

D. Oscillatoria

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Plants which are not differentiated roots, stems and leaves are grouped under

A. Thallophytes

B. Gymnosperms

C. Pteriodophytes

D. Spermatophyte

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Heterotrichous habit is shown by

A. Chlamydomonas

B. Oedogonium

C. Stigeoclonium

D. Ulothrix

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Which of the following algae produces Palmella stage ?

A. Chlamydomonas

B. Cystopus

C. Oedogonium

D. Scytonema

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Haematochrome is a :

A. non-photosynthetic pigment found in algae

B. photosynthatic pigment found in algae

C. both (a) and (b)

D. none of these

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The photosynthetic pigments of Chlamydomonas are located in

A. gran a

B. thylakoid

C. stroma

D. pyrenoid

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Redness of red sea is due to

A. Red colour present in the sea water

B. Trichodesmium erythrium

C. Red algae or Batrachospermum

D. None of these

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A thick-walled spore meant for perenna-tionis

A. aplanospore

B. akinete

C. hypnospore

D. zoospore

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Simplest type of reproduction in plants is found in

A. Ulothrix

B. Nostoc

C. Chlamydomonas

D. Spirogyra

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Alga rich in protein is

A. Ulothrix

B. Chlorella

C. Oscillatoria

D. Spirogyra