481.
Which of the following plants produces seeds but not flowers?
A
Maize
B
Mint
C
Peepal
D
Pinus
Answer :
Pinus
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482.
Number of the cotledons in embryo of Pinus is
A
One
B
Two
C
3 - 18
D
3 - 10
Answer :
3 - 18
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483.
Which character of gymnospermic leaf indicates its xerophyitic nature
A
Sunken stomata
B
Epidermis with thick cuticle
C
Mesophyll with pallisade and spongy tissue
D
All of the above
Answer :
All of the above
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484.
Dimorphic branches and leaves are found in
A
Pea
B
Cycas
C
Pinus
D
Fern
Answer :
Pinus
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485.
Which character most differentiates Angiosperms from gymnosperms
A
Triploid endosperm
B
Vessels in xylem
C
Seeds enclosed in fruits
D
Attractive petels
Answer :
Seeds enclosed in fruits
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486.
At the time of fertilization, how many cell/cells/is are present in the axis of archegonium of Riccia
A
One
B
Two
C
Three
D
Four
Answer :
One
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487.
Which of the following part of Funaria, sporophyte is involved in the dispersal of spores
A
Calyptra
B
Operculum
C
Peristome
D
Annulus
Answer :
Peristome
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488.
The product of conjugation of Spirogyra is called
A
Zoospores
B
Akinete
C
Chlamydospore
D
Zygospore
Answer :
Zygospore
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489.
Which types of spores fix to substratum by anterior end at the time of germination
A
Macrozoosopres
B
Micro - zoospores
C
Aplanospores
D
Hypno spores
Answer :
Micro - zoospores
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490.
The water conducting tissue in bryophyta is
A
Parenchyma
B
Sclerenchyma
C
Trachieds
D
Sieve tubes
Answer :
Parenchyma
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