Internal Structure of Stem

IMPORTANT

Internal Structure of Stem: Overview

This topic covers concepts such as Starch Sheath in Plants, Pith, Anatomy of Stem, Anatomy of Dicot Stem, Anatomy of Monocot Stem, Hypodermis, and Medullary Ray.

Important Questions on Internal Structure of Stem

HARD
IMPORTANT

Assertion: Endodermis is also considered a starch sheath in the dicot stem. 
Reason: The endodermis cells are rich in grains of starch.

EASY
IMPORTANT

What makes medullary rays in animals ?

EASY
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What are the functions of medullary rays ?

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What are medullary rays ?

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What is the role of medullary rays in plants?

EASY
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Describe the arrangement of medullary rays.

EASY
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What do you mean by medullary rays?

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The hypodermis helps in keeping homeostasis.

EASY
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Where is hypodermis found in the plant body?

MEDIUM
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How does the hypodermis insulate the body from electric shock?

EASY
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What are the roles of the hypodermis layer?

EASY
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Explain the hypodermis layer of skin.

HARD
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Medullary rays are formed by the

MEDIUM
IMPORTANT

Identify the cells/parts based on the characters given below respectively.
- Highly thickened dead cells with narrow lumen
- Lysigenous cavities with water
- Radially placed parenchymatous cells between vascular bundles
- Polyarch xylem bundles
A: Monocot stem
B: Leaves of tea
C: Medullary rays
D: Monocot root

EASY
IMPORTANT

Conjoint, open and endarch type of vascular bundles are common in which of the following?

EASY
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The innermost layer of the cortex is called

MEDIUM
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 The term starch sheath is used for endodermis of dicot.

MEDIUM
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Starch sheath is another name of _____.

MEDIUM
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How many statement is/are incorrect regarding anatomy of dicot stem?