61.
Which of the following is made up of dead cells?
A
Collenchyma
B
Phellem
C
Phloem
D
Xylem parenchyma
Answer :
Phellem
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62.
Physiologically functional part of wood is
A
Heart wood only
B
Sap wood only
C
Only primary wood
D
Both heart wood & sap wood
Answer :
Sap wood only
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63.
In dicot root showing secondary growth, cork is found
A
External to primary cortex
B
Inner to epidermis and outer to Pericycle
C
Outer to endodermis and inner to primary cortex
D
Inner to endodermis and external to primary phloem
Answer :
Inner to epidermis and outer to Pericycle
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64.
In a dicotyledonous stem, the sequence of tissues from the outside to the inside is
A
Phellem-pericycle-Endodermis- Phloem
B
Phellem-Phloem-Endodermis- Pericycle
C
Phellem-endodermis-Pericycle- Phloem
D
Pericycle-Phellem- Endodermis- Phloem
Answer :
Phellem-endodermis-Pericycle- Phloem
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65.
Which of the following is a well differentiated plant tissue
A
Apical meristem
B
Cambium
C
Parenchyma
D
All of the above
Answer :
Parenchyma
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66.
Vessels and companion cells are found in
A
Angiosperm
B
Pteridophytes
C
Bryophytes
D
Thallophytes
Answer :
Angiosperm
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67.
Is dorsivantral leaf phloem is found in which side
A
Adaxial
B
Abaxial
C
Lateral
D
Adaxial and Abaxial both
Answer :
Abaxial
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68.
In plants maximum growth occurs during which season
A
Summer
B
Winter
C
Autumn
D
Spring
Answer :
Spring
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69.
Vessel elements differ from other elements of xylem in having
A
Simple and bordered pits on end walls
B
Simple perforation on their end walls
C
Simple pits on their radial walls
D
Bordered pits on their lateral walls
Answer :
Simple perforation on their end walls
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70.
A nail is driven in a stem of mango tree at 2 meter above the ground. How much height is attained by nail after 5 years
A
3 meters
B
5 meters
C
10 meters
D
Nail remains at same height - 2 meter
Answer :
Nail remains at same height - 2 meter
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