Bark refers to 

(1) Phellem + Phellogen + Phelloderm

(2) Periderm + Cortex

(3) Phellem + Phelloderm + Secondary phloem

(4) Periderm + Cortex + Pericycle + Secondary phloem

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

Difficulty Level:


The branched sclereids present in hydrophytes are:-
(1) osteosclereids

(2) trichosclereids

(3) macrosclereids

(4) astrosclereids

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

Difficulty Level:


Why are vascular bundles closed in monocots?

(1) Xylem and Phloem are present

(2) Xylem and phloem occur in separate bundles

(3) Vascular cambium is present between xylem and phloem

(4) Vascular cambium is not present

Subtopic:  Vascular Tissue System |
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:


Given figure shows:-

(a) structure of lenticel
(b) hydathode showing gaseous vapour exchange
(c) fungus reproducing by spore formation
(d) algae reproducing by spore formation

Subtopic:  Activity of Cork Cambium |
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:


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 |
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:


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

Difficulty Level:


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 |
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:


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

To view explanation, please take trial in the course below.
NEET 2022 - Target Batch - Aryan Raj Singh

Difficulty Level:


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

(2) Zea mays

(3) Cucurbita   

(4) Dracaena

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

Difficulty Level:


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 |
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: