There are _________types of medullary rays formed in dicot roots during secondary growth.

(1)one

(2)two

(3)three

(4)many

Subtopic:  Ground Tissue System | Activity of Cork Cambium |
 66%
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The common medullary rays between dicot stem and root is

(1)primary medullary rays

(2)secondary medullary rays

(3)Both A and B

(4)None of the above

Subtopic:  Activity of Cork Cambium |
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Secondary growth occurs in

(1)dicot root and stem of angiosperms

(2)dicot root and stem of gymnosperms

(3)monocot roots

(4)Both 1 and 2

Subtopic:  Secondary Growth in Root (OLD NCERT) |
 70%
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Lenticels are present in

(1)stem only

(2)root only

(3)Both A and B

(4)root, stem and leaf

Subtopic:  Activity of Cork Cambium |
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The more correct function of the medullary rays in dicot roots are

(1) water conduction only

(2)food conduction only

(3)food and water conduction

(4) food and water conduction in radial direction

Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 78%
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Which of the following is known as living mechanical tissue

(1)parenchyma

(2)collenchyma

(3)sclerenchyma

(4)All of the above

Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
 74%
From NCERT
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Which one is true of collenchyma?

(1)forms the hypodermis of dicot stem

(2) present below epidermis in layers or patches

(3)thickened corners due to cellulose, hemicellulose, and pectin deposition

(4)All of the above

Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
 93%
From NCERT
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The main mechanical tissue of the plant is

(1)sclerenchyma

(2)collenchyma

(3)parenchyma

(4)Both B and C

Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
 55%
From NCERT
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Sclerenchyma is

(1) dead and lignified

(2)consists of long, narrow, thick walled cells

(3)may be in the form of fibres and sclereids

(4)All of these

Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
 97%
From NCERT
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Which one is true for sclereids

(1)highly thickened dead walls with narrow lumen

(2)present in fruit walls of nuts

(3)pulp of guava, pear, and sapots

(4)All of the above

Subtopic:  Simple Tissue: Chollenchyma & Sclerenchyma |
 97%
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