Heartwood is

(1)dark brown in color

(2)contains organic compounds like tannin, resins, gums, oils

(3)known as duramen

(4)All of these

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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How many of the statements are  true for heartwood

a. It provides mechanical support to the stem

b. It does not conduct water

c. It is hard, durable and resistant to the attacks of microbes

d. It is the innermost layer of the wood

e. It comprises dead elements with highly lignified walls

f. More the heartwood is present the better is the quality of the wood

(1)4

(2)5

(3)6

(4)3

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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Which one is true for sapwood

(1)It lies in the peripheral region of xylem

(2)It does conduction of water and minerals

(3)It is also called as alburnum

(4)All of the above

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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Least distinct annual rings are present in regions like

(1)tropical areas

(2)desert

(3)coastal areas

(4)All of the above

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

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Cork cambium gives rise

(1)cork

(2)phelloderm

(3)phellem

(4)All of the above

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

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Periderm comprises of

(1)Phellem

(2)phellogen

(3)phelloderm

(4)All of these

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

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The dead cells which are formed towards the epidermis by cork cambium are called as

(1)cork

(2)phellem

(3)phelloderm

(4)Both A and B

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

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The chloroplast containing parenchymatous cells which are formed towards the innerside by cork cambium are called as

(1)secondary cortex

(2)phelloderm

(3)phellem

(4)Both A and B

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

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Which one is true for phellogen

(1)thick layer cells

(2)narrow, thin walled and nearly rectangular cells

(3)gives rise to phellem and phelloderm

(4)All of the above

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

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Incorrect match is

(1)Phellogen  = cork cambium

(2)Phellem = Cork

(3)Phelloderm=cortex

(4)Phelloderm=Secondary cortex

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: