Topic: Chapter 10 Secondary Growth (Test 1)



Topic: Chapter 10 Secondary Growth
Q.1

Consider the following statements

In spring season vascular cambium

i. is less active

ii. produces a large number of xylary elements

iii. forms vessels with wide cavities of these,
A. (i) is correct but (ii) and (iii) are not correct
B. (i) is not correct but (ii) and (iii) are correct
C. (i) and (ii) are correct but (iii) is not correct
D. (i) and (ii) are not correct but (iii) is correct
Answer : Option B
Explaination / Solution:
No Explaination.


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Q.2
Usually, the monocotyledons do not increase their girth, because
A. They possess actively dividing cambium
B. They do not possess actively dividing cambium
C. Ceases activity of cambium
D. All are correct
Answer : Option B
Explaination / Solution:
No Explaination.


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Q.3
In the diagram of lenticel identify the parts marked as A,B,C,D


A. A. phellem, B. Complementary tissue, C. Phelloderm, D. Phellogen.
B. A. Complementary tissue, B. Phellem, C. Phellogen, D.Phelloderm.
C. A. Phellogen, B. Phellem, C. Phelloderm, D. complementary tissue
D. A. Phelloderm, B. Phellem, C.Complementary tissue, D.Phellogen
Answer : Option A
Explaination / Solution:
No Explaination.


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Q.4
The common bottle cork is a product of
A. Dermatogen
B. Phellogen
C. Xylem
D. Vascular cambium
Answer : Option B
Explaination / Solution:
No Explaination.


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Q.5
What is the fate of primary xylem in a dicot root showing extensive secondary growth?
A. It is retained in the center of the axis
B. It gets crushed
C. May or may not get crushed
D. It gets surrounded by primary phloem
Answer : Option B
Explaination / Solution:
No Explaination.


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