The endodermis is absent or indistinct in the:-
1. Roots of all plants
2. Leaves of pteridophytes
3. Leaves of gymnosperms
4. Stems of woody plants

Subtopic:  Dicot Stem |
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NEET 2022 - Target Batch - Aryan Raj Singh

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The term 'bark' includes : 

I.      Phellogen

II.     Phellem

III.    Phelloderm

IV.     Secondary phloem

 

1.       I, II and III only

2.       I, II and IV only

3.       II, III and IV only

4.       I, II, III and IV only

Subtopic:  Activity of Cork Cambium |
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NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Identify the incorrect statement:

1.  The presence of vessels is a characteristic of angiosperms

2.  In roots the primary xylem is exarch

3.  Gymnosperms lack albuminous cells and sieve cells

4.  Bast fibers are generally absent in primary phloem

Subtopic:  Complex Tissue: Phloem |
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NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


Parts of grasses removed by the grazing herbivores are regenerated due to the activity of: 

1. Apical meristem

2. Intercalary meristem

3. Interfascicular cambium

4. Fascicular vascular cambium

Subtopic:  Meristematic Tissue: Shoot Apex |
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NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


In the dicot root, the vascular cambium:-
1. is absent
2. is completely secondary in origin
3. does not form a continuous ring
4. originates from the tissue just above the phloem bundles

Subtopic:  Anatomy of Root |
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NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

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Lignin is a component of the secondary walls of:-

1. Epidermis

2. Collenchyma

3. Sclerenchyma

4. Parenchyma

Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
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NEET 2022 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The pericycle, which gives rise to lateral roots, consists of:

1. Epithelial cells

2. Meristematic cells

3. Parenchymal cells

4. Endodermal cells

Subtopic:  Anatomy of Root |
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NEET 2022 - Target Batch - Aryan Raj Singh

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Summer wood is:

(1) the same as heartwood.

(2) found to the outside of each annular ring of xylem.

(3) found to the inside of each annular ring of xylem.

(4) formed throughout the growing season.

Subtopic:  Types of Wood |
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NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


The given transverse section is of:

 

(1) Monocot stem

(2) Dicot stem

(3) Monocot root

(4) Dicot root

Subtopic:  Monocot Stem |
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Please attempt this question first.

Difficulty Level:


The vascular bundle shown in the diagram is most likely to be seen in:

 

(1) Monocot stem

(2) Dicot stem

(3) Monocot root

(4) Dicot root

Subtopic:  Vascular Tissue System |
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Please attempt this question first.

Difficulty Level: