401.
Casparian strips are characteristic feature of endodermis, made up of
A
Cutin
B
Pectin
C
Suberin
D
Cellulose
Answer :
Suberin
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402.
Complex tissues are not found in
A
Few bryophytes
B
Pteridophytes
C
All gametophytes
D
All spermatophytes
Answer :
All gametophytes
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403.
In the sieve elements, which on the following is the most likely function of P- proteins
A
Deposition of callose on sieve plates
B
Providing energy for active translocation
C
Autolytic enzymes
D
Sealing mechanism on wounding
Answer :
Sealing mechanism on wounding
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404.
Lignin is the important component of the cell wall of
A
Phloem
B
Xylem
C
Cambium
D
Parenchyma
Answer :
Xylem
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405.
What is "Rhytidome"
A
Bark
B
Dead tissue separated by periderm on outer side
C
Dead tissue separated by periderm on inner side
D
Secondary cortex
Answer :
Dead tissue separated by periderm on outer side
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406.
Eustele is characteristic of
A
Monocots
B
Dicots
C
Pteridophytes
D
Bryophytes
Answer :
Monocots
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407.
A simple tissue with mechanical and physiological function in young dicotyledonous plant is
A
Sclerenchyma
B
Collenchyma
C
Parenchyma
D
Meristematic tissue
Answer :
Collenchyma
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408.
An example of monocots showing secondary growth in stem is
A
Lillium
B
Cocos
C
Asparagus
D
Yucca
Answer :
Yucca
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409.
Annual growth rings are formed due to activity of
A
Extra stelar cambium
B
Intra stelar cambium
C
Inter steral cambium
D
Both B and C
Answer :
Both B and C
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410.
Cambium is a lateral meristem, as it
A
Increase girth
B
Forms lateral branches
C
Lies on nodes
D
Increases length
Answer :
Increase girth
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