The peripheral region of secondary xylem lighter in colour is

(1) Sapwood

(2) Heartwood

(3) Annular wood

(4) Bark wood

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

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Cork cambium is also called

(1) Phellogen

(2) Annular ring

(3) Early wood

(4) Late wood

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:


Phellogen, phellem and phelloderm are collectively known as

(1) Phellogram

(2) Periderm

(3) Cork

(4) Phalanges

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:


Bark that is formed early in season is called __________ bark.

(1) Hard

(2) Soft

(3) Turbid

(4) Lenticels

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:


Bark formed towards the end of the season is called ________ bark.

(1) Soft

(2) Hard

(3) Turbid

(4) Rigid

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:


The exchange of gases between the outer atmosphere and internal tissue of stem is through ___________.

(1) Lenticels

(2) Legume

(3) Epidermis

(4) Cambium ring

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:


In a TS of lenticel arrange these in order (interior to exterior)
1. Secondary cortex
2. Epidermis
3. Cork cambium
4. Complementary cells
A. 1, 3, 4, 2
B. 1, 2, 3, 4
C. 1, 4, 3, 2
D. 4, 1, 2, 3

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:


In dicot root the vascular cambium is completely _________ in origin.

(1) Primary

(2) Secondary

(3) Tertiary

(4) Quaternary

Subtopic:  Activity of Vascular 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

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Which one yields fibres?

(1) Coconut

(2) Oak

(3) Teak

(4) Sisso

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

Difficulty Level:


Death of protoplasm is a pre-requisite for vital function like

(1) Transport of sap

(2) Transport of food

(3) Absorption of water

(4) Gaseous exchange

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

Difficulty Level: