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NEET Practice Questions (MCQs) with Answers & Solutions

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All Physics Chemistry Botany Zoology

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The peripheral region of secondary xylem lighter in colour is

A. Sapwood B. Heartwood C. Annular wood D. Bark wood

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Explanation

P-96 , PARA-3

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Cork cambium is also called

A. Phellogen B. Annular ring C. Early wood D. Late wood

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Explanation

P-96 , PARA-4

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Phellogen, phellem and phelloderm are collectively known as

A. Phellogram B. Periderm C. Cork D. Phalanges

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Explanation

P-96 , PARA-4

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

A. Hard B. Soft C. Turbid D. Lenticels

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Explanation

P-97 , PARA-1

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

A. Lenticels B. Legume C. Epidermis D. Cambium ring

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Explanation

P-97 , PARA-2

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

A. Primary B. Secondary C. Tertiary D. Quaternary

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Explanation

P-97 , PARA-3

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Which one yields fibres?

A. Coconut B. Oak C. Teak D. Sisso

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Explanation

Commercial fibres are obtained from coconut also called surface fibres and occur on surface of seed.

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

A. Transport of sap B. Transport of food C. Absorption of water D. Gaseous exchange

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Explanation

Xylem performs the function of transport of water or sap inside the plant and is dead tissue and devoid of protoplasm.

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Dicotyledonous leaf is also known as

Dorsiventral leaf

Bi-facial leaf

Both A and B

Isobilateral leaf

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Explanation

Refer NCERT, heading 6.3.5 para 1 page 93

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The main parts of the lamina of the dorsiventaral leaf are

epidermis

mesophyll tissues

vascular system

All of the above

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Explanation

Refer NCERT, heading 6.3.5 para 1 page 93

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