[50+] Secondary Growth of a Plant MCQs and Answers (Multiple Choice Questions)

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Secondary Growth of a Plant MCQs and Answers

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1. Secondary growth is due to _______

Cambium

Apical meristem

Intercalary meristem

Parenchyma

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2. Which among the following is incorrect about vascular cambium?

It exists as a layer in between primary xylem and primary phloem

Intrafascicular cambium is formed when cambium cells are in between the primary xylem and phloem

Interfascicular cambium cells are medullary cells that adjoin intrafascicular cambium

A cambial ring is formed in an intrafascicular cambium

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3. Which among the following is not correct about vascular cambium?

Cells on the outer side of cambial ring differentiate into secondary phloem

Cells on the inner side of cambial ring differentiate into secondary xylem

Amount of the secondary phloem produced is more than that of secondary xylem

Vascular cambium is an example of Meristematic tissue

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4. Which among the following is incorrect about cork cambium?

Cork cambium helps in the replacement of the broken epidermis during the secondary growth

Cells on the outer side of the cork cambium differentiates to form cork

Cells on the inner side of the cork cambium differentiates to form the secondary cortex

Cork is also known as Phelloderm

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5. Secondary cortex is also called as _________

Phellem

Phelloderm

Secondary xylem

Secondary phloem

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6. Which among the following describes bark?

Phloem and xylem

Epidermis and parenchymatic cells

Everything outside the vascular cambium including the secondary phloem

Pith

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7. The wood that grows in the winter due to inactive cambium is called as _______

Earlywood

Heartwood

Sapwood

Autumn wood

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8. The region in the secondary phloem that comprises dead elements and is protected by lignified walls is called as _____

Early wood

Heart wood

Sap wood

Late wood

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