321.
Cotton is obtained from
A
Epidermal tissue system
B
Ground tissue system
C
Vascular tissue system
D
Meristematic tissue system
Answer :
Epidermal tissue system
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322.
In xylem, fibres give strength to
A
Vessels
B
Tracheids
C
Parenchyma
D
Storage tissue
Answer :
Vessels
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323.
The trees growing in deserts will
A
Show alternate rings of xylem and sclerenchyma
B
Show distinct annual rings
C
Not show distinct annual rings phloem formed by the activity of cambium
D
Have only conjunctive tissue and phloem formed by the activity of
Answer :
Not show distinct annual rings phloem formed by the activity of cambium
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324.
In land plants, the guard cells differ from other epidermal cells in having:
A
cytoskeleton
B
mitochondria
C
endoplasmic reticulum
D
chloroplasts
Answer :
chloroplasts
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325.
Articulated latex vessels occur in
A
Hevea
B
Calotropis
C
Euphorbia
D
Tamarindus
Answer :
Hevea
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326.
Regeneration of damaged growing grass following grazing is largely due to:
A
Secondary meristem
B
Lateral meristem
C
Apical meristem
D
Intercalary meristem
Answer :
Intercalary meristem
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327.
Parenchyma with large air spaces is
A
Stellate parenchyma
B
Aerenchyama
C
Angula parenchyma
D
Prosenchyma
Answer :
Aerenchyama
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328.
Secondary growth is the production of
A
New tissue from intercalary meristem
B
New conduction cells
C
New tissue form lateral meristem
D
New ground cells
Answer :
New tissue form lateral meristem
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329.
The leaves having equal stomata on both the surface are called as
A
Amphistomatic
B
Hypostomatic
C
Epistomiatic
D
Automatic
Answer :
Amphistomatic
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330.
Which one increases due to cambium
A
Length
B
Width
C
Circumference
D
None of the above
Answer :
Circumference
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