Biology MCQs

1496 MCQs  — Everyday Science MCQs  (Page 65 of 150)

Attempt Biology Quiz
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
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Production of two types of spores is known as________________?
A. Heterospory
B. Homospory
C. Heterogamy
D. Gamospory
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Ground pries are also known as___________?
A. Lycopods
B. Spike mosses
C. Both of these
D. None of these
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Which of the following plant group first formed true leaves________________?
A. Psilopsida
B. Lycopsida
C. Sphenopsida
D. Pteropsida
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Megaphylls i.e. leaves with divided veins with an expanded lamina is a dharacteristic of ___________________?
A. Lycopods
B. Ferns
C. Seed plants
D. Both b and c
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The arrangement of unequal dichotomous branches in one plane during evolution of leaves is called_____________?
A. Overtopping
B. Fusion
C. Webbing
D. Planation
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Which of the following statement about filicinae a group of tracheophytes is incorrect_________________?
A. They belong to sphenopsida
B. They are seedless and their leaves are called fronds
C. They live in shady and mosit areas.
D. They show circinate vernation.
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Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________?
A. Its short thick branched horizontally growing rhizome
B. Fibrous adventituous roots arise from the lower side of rhizome
C. Shows heteromorphic alternation of generation
D. Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures
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Specialized protective coverings around megasporangium which vary in number are called_________________?
A. Sporangium
B. Integuments
C. Ovule
D. Pericarp
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In which group of tracheophytes ovules are born on the exposed surface of megasporophylls______________?
A. Spheospsida
B. Filicineae
C. Gymnosperms
D. Angiosperms
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Word of the Day
14 Jul
Obscenity
the state or quality of being obscene.
بےہودگی، فحاشی، بے شرمی

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