The zygote formed in liverworts is
A. Unicellular
B. Mulicellular
C. Multinucleate
D. None of these
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Biology
Production of two types of spores is known as
A. Heterospory
B. Homospory
C. Heterogamy
D. Gamospory
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The space between the overtopped dichotomous branches was occupies by a sheet of _________ cells during evolution of megaphyllas?
A. Sclerenchyma
B. Chlorenchyma
C. Parenchyma
D. Collenchyma
Which of the following statement about alternation of generation in bryophytes is incorrect?
A. It involves alternation of morphologically different generations
B. Their gametophyte is independent while sporophyte depends upon gametophyte for nutrition.
C. Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization
D. Spore formation occurs through meiosis
In bryophytes fertilization takes place in
A. Antheridia
B. Archegonia
C. water
D. Ovule
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Megaphylls are characteristic for
A. Ferns
B. Seed plants
C. Both of these
D. None of these
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Horsetails are included in class of
A. Sphenopeida
B. Lycopsida
C. Psilopsida
D. Pteropsida
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Of the following which one is not the characteristic of the plants included in psilopsida
A. Gametophyte is colourless
B. They have mycorrhizal association
C. Rhizoids bear Rhizome
D. Aerial branches have veinless outgrowths
Hornwarts are included in sub-class of
A. Anthoceropsida
B. Bryopsida
C. Hepaticopsida
D. Psilopsida
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