Match the parts labeled as A, B and C in the diagram of stem apex with their derivatives in the plant body:

A B C
1.  Dermatogen Periblem Plerome
2. Dermatogen Plerome Periblem
3. Epidermis Vascular bundle Cortex
4. Epidermis Cortex Vascular bundle

Subtopic:  Meristematic Tissue: Shoot Apex (OLD NCERT) |
 52%

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Consider the given two statements:
I. Collenchyma cells in plants are well adapted for the support of young, growing organs.
II. They can continue to develop thick flexible walls while the organ is still elongating.

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. Both I and II are false

Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
 64%

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Consider the given two statements:
I. Vessel elements are generally thought to be more efficient conductors of water than the tracheids.
II. Vessel elements, with their open systems, are more safe for plants than tracheids.

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. Both I and II are false

Subtopic:  Complex Tissue: Xylem |
Please attempt this question first.
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Consider the given two statements:
I. Xylem is dubbed as the ‘superinformation highway’ in plants.
II. Long distance signaling in plants occurs predominantly through xylem.

1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. Both I and II are false

Subtopic:  Complex Tissue: Xylem |

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The given special structure is seen mainly in:

 

1. Grasses
2. Aquatic plants
3. Xerophytic plants
4. Mangroves

Subtopic:  Vascular Tissue System |

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What would be true for both companion cells and albuminous cells?
I. They are derived from same mother cell as their associated cells.
II. Both contain a nucleus.
III. Both die when their associated cells die.

1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III

Subtopic:  Complex Tissue: Phloem |

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The given diagram shows the central core of root in a certain plant. P is phloem and protoxylem elements and V is metaxylem. What is correct for structures indicated by arrows?

1. They show aerenchyma essential for aeration of root cells
2. They show cells in the roots that contain chloroplast
3. They show cells lack the characteristic radial and inner tangential wall thickening which is common to endodermal cells
4. They show cells that store resins and oils in the roots

Subtopic:  Complex Tissue: Xylem | Complex Tissue: Phloem |
 63%

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In the transverse section of a monocot root given below, identify A, B, C and D:

 

A B C D
1. Epidermis Exodermis Endodermis Pericycle
2. Exodermis Epidermis Endodermis Pericycle
3. Epidermis Exodermis Pericyle Endodermis
4. Exodermis Epidermis Pericyle Endodermis
Subtopic:  Anatomy of Root |
 63%
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Identify the correct statement regarding A and B [types of concentric vascular bundles] in the given diagram:

1. A is Amphivasal and found in Dracaena while B is amphicribal and found in Selaginella
2. A is Amphivasal and found in Selaginella while B is amphicribal and found in Dracaena
3. A is Amphicribal and found in Dracaena while B is amphivasal and found in Selaginella
4. A is Amphicribal and found in Selaginella while B is amphivasal and found in Dracaena

Subtopic:  Vascular Tissue System |

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Identify the option where the difference between the vascular bundles of Dicot and Monocot stem is not correctly mentioned:

 

Dicot stem

Monocot stem

1.

Collateral and open

Collateral and closed

2.

Arranged in a ring

Scattered

3.

Larger toward the center

Of uniform size

4.

Phloem parenchyma present

Phloem parenchyma absent

Subtopic:  Dicot Stem | Monocot Stem |
 82%
From NCERT

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