Select the correct pair amongst the following.
(1) Spring wood  - light colour, high density

(2) Spring wood  - dark colour, low density

(3) Autumn wood - light colour, high density

(4) Autumn wood - dark colour, high density

Subtopic:  Types of Wood |
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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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As secondary growth proceeds, in a dicot stem, the thickness of.

(1) sapwood increases

(2) heartwood increases

(3) both sapwood and heartwood increases

(4) both sapwood and heartwood remains the same

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

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The desert grasses, often curls their leaf to minimise water loss due to presence of 

(1) Spines

(2) Palisade parenchyma

(3) Bundle sheath cells

(4) Bulliform cells

Subtopic:  Monocot Leaf |
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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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Tyloses are balloon-like outgrowths in the lumen of secondary xylem tracheids and vessel of duramen region. These are actually:-
(1) outgrowth of vessels of xylem

(2) ingrowth of vessels

(3) outgrowth of parenchymatous cell

(4) swelling of xylem fibres for no function

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NEET 2022 - Target Batch - Aryan Raj Singh

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Pith cavity occurs in the stem of ?
(1) Helianthus

(2) Zea mays

(3) Cucurbita   

(4) Dracaena

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

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Match the Column I and II.

Column I

Column II

A.  Bulliform cells

1.   Stomata

B.  Guard cells

2.   Aerating pore

C.  Lenticels

3.   Accessory cells

D.  Subsidiary cell

4.   Isobilateral cells


        A  B  C  D
(a)   1   2  3   4
(b)   3   1  2   4
(c)   4   1  2   3
(d)   4   3  2   1

Subtopic:  Epidermal Tissue System | Monocot Leaf | 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

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Root cambium is derived from?

(1) primary meristem

(2) secondary meristem

(3) intercalary meristem

(4) apical meristem

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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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Which one of the following comprises only simple tissue?

A. Parenchyma, Collenchyma and Sclerenchyma

B. Parenchyma, Xylem and Collenchyma

C. Parenchyma, Xylem and Sclerenchyma

D. Parenchyma, Xylem and Phloem

Subtopic:  Tissue: Intro & Classification |
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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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Match the following

A. Meristem                                                  i. Photosynthesis, storage

B. Parenchyma                                             ii. mechanical support

C. Collenchyma                                            iii. Actively dividing cells

D. Sclerenchyma                                          iv. stomata

E. Epidermal tissue                                       v. Sclereids

A. A-i, B-iii, C-v, D-ii, E-iv

B. A-iii, B-i, C-ii, D-v, E-iv

C. A-ii, B-iv, C-v, D-i, E-iii

D. A-v, B-iv, C-iii, D-ii, E-i

Subtopic:  Meristematic Tissue:Classification | Simple Tissue: Parenchyma | Simple Tissue: Chollenchyma & Sclerenchyma | Epidermal Tissue System |
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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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What is the destiny of primary xylem in a dicot root showing extensive secondary growth?

A. It is retained in the centre of the axis

B. It gets crushed

C. May or may not get crushed

D. It gets surrounded by primary phloem

Subtopic:  Secondary Growth in Root |
To view explanation, please take trial in the course below.
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: