441.
Atactostele is found in
A
Dicot stem
B
Monocot stem
C
Dicot root
D
Monocot root
Answer :
Monocot stem
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442.
The cells of a permanent tissue do not divided because these are
A
Dead
B
Enucleate
C
Arrested at G-1 stage
D
Arrested at prophase
Answer :
Arrested at G-1 stage
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443.
Procambium produces
A
Epidermis
B
Pith
C
Vascular bundle
D
Vascular bundle and pith
Answer :
Vascular bundle
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444.
Which of the statements given below is not true about formation of annual rings in trees?
A
Annual ring is a combination of spring wood and autumn wood produced in a year
B
Differential activity of cambium causes light and dark bands of tissue - early and late wood respectively
C
Activity of cambium depends upon variation in climate
D
Annual rings are not prominent in trees of temperate region
Answer :
Annual rings are not prominent in trees of temperate region
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445.
The function of hypodermis is
A
Protection
B
Hardness
C
Support
D
Storage
Answer :
Support
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446.
In plants, during embryonic condition
A
All cells of the embryo divide
B
Meristematic activity is confined to single apical cell
C
Meristematic activity is confined to a group of apical cells.
D
Apical & lateral cells only divide
Answer :
All cells of the embryo divide
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447.
Which of the meristem is responsible for secondary growth
A
Apical
B
Lateral
C
Intercalary
D
Basal
Answer :
Lateral
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448.
Angular collenchyma occurs in
A
Cucurbita
B
Helianthus
C
Althaea
D
Salvia
Answer :
Cucurbita
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449.
Protosteles are found in
A
Bryophyta
B
Gymnosperms
C
Pteridophyta
D
Angiosperms
Answer :
Pteridophyta
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450.
What happens during vascularization in plants?
A
Differentiation of procambium is immediately followed by the development of secondary xylem and phloem
B
Differentiation of procambium followed by the development of xylem and phloem
C
Differentiation of procambium , xylem and phloem is simultaneous
D
Differentiation of procambium followed by the development of primary phloem and then by primary xylem
Answer :
Differentiation of procambium followed by the development of xylem and phloem
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