Assertion (A): Amount of secondary xylem produced is more than the secondary phloem in the dicot stem.

Reason (R): Cambium is generally more active on the inner side than on the outer.

1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.

2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.

3. If Assertion is a true statement but the reason is false.

4. If both Assertion and Reason are false statements.

Subtopic:  Activity of Vascular Cambium | Activity of Secondary Xylem |
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Assertion (A) : Phellogen is a secondary meristem that forms cork on the outer side and secondary cortex on the inner side.

Reason (R) : Phellogen is formed every year from hypodermis and pericycle in dicot root and dicot stem respectively.

1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.

2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.

3. If Assertion is a true statement but the reason is false.

4. If both Assertion and Reason are false statements.

Subtopic:  Activity of Cork Cambium |
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A: Secondary growth is absent in monocots

R: Monocots lack vascular cambium.

1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.

2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.

3. If Assertion is a true statement but the reason is false.

4. If both Assertion and Reason are false statements.

Subtopic:  Monocot Stem |
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A: The secondary xylem is derived from procambium during secondary growth.

R: The amount of secondary xylem is almost equal to the amount of secondary phloem.

1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.

2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.

3. If the Assertion is a true statement but the reason is false.

4. If both Assertion and Reason are false statements.

Subtopic:  Activity of Secondary Xylem |
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a. Annual rings are bands of secondary phloem and medullary rays.

b. The wood of Cycas has vessels.

c. Conjoint vascular bundles are found in the leaves of sunflowers and maize.

Which of the above statement(s) is/are correct?

1. a & b are correct

2. b & c are correct

3. Only a is correct

4. Only c is correct

Subtopic:  Vascular Tissue System | Activity of Vascular Cambium |
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Select incorrect statements from the given below:

(i) Endodermis with Casparian strips are found in the dicot stem.

(ii) The endodermis is a part of the stele.

(iii) Open vascular bundles are found in some monocots.

(iv) Bulliform cells are found in the upper epidermis in the isobilateral leaf.

1 (i) and (ii)

2. (ii) and (iii)

3. (i), (ii) and (iii)

4. Only (iv)

Subtopic:  Monocot Stem |
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How many of the following statements are true for heartwood?
I. It provides mechanical support to the stem
II. It does not conduct water
III. It is hard, durable, and resistant to the attacks of microbes
IV. It is the innermost layer of the wood
V. It comprises dead elements with highly lignified walls
VI. More the heartwood is present, the better is the quality of the wood

1. Four
2. Five
3. Six
4. Three

Subtopic:  Activity of Secondary Xylem |
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Match the following columns:

Column I Column II
A. Meristem i. Photosynthesis, storage
B. Parenchyma  ii. Mechanical support
C. Collenchyma cells iii. Actively dividing
D. Sclerenchyma  iv. Stomata
E. Epidermal tissue v. Sclereids

Codes:

A B C D E
1. i iii v ii iv
2. iii i ii v iv
3. ii iv v i iii
4. v iv iii ii i

Subtopic:  Meristematic Tissue:Classification | Simple Tissue: Parenchyma | Simple Tissue: Chollenchyma & Sclerenchyma | Epidermal Tissue System |
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3. Match the following columns.

Column I

 Column II

A. Cuticle 

B. Bulliform cells 

C. Stomata 

D. Epidermis 

1. Guard cells

2. Single layer

3. Waxylayer

4. Empty colourless cell

Codes

       A   B   C   D 

(a)   3   4   1   2

(b)   1   2   3   4

(c)   3   2   4   1

(d)   3   2   1   4

Subtopic:  Vascular Tissue System |
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Match the following and choose the correct option from below

A

Cuticle

i.

Guard cells

B

Bulliform cells

ii.

Single layer

C

Stomata

iii.

Waxy layer

D

Epidermis

iv.

Empty colourless cell

Options:

1.

A-iii

B-iv

C-i

D-ii

2.

A-i

B-ii

C-iii

D-iv

3.

A-iii

B-ii

C-iv

D-i

4.

A-iii

B-ii

C-i

D-iv

Subtopic:  Epidermal Tissue System |
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