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Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - NEET MCQ


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10 Questions MCQ Test - Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4)

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Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 1

What is the name of the layer of collenchymatous cells just below the epidermis in a dicotyledonous stem?

Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 1
The layer of collenchymatous cells just below the epidermis in a dicotyledonous stem is called the hypodermis. It provides mechanical strength to the young stem, helping it withstand mechanical stress.
Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 2

Which is the outermost protective layer of a typical young dicotyledonous stem?

Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 2
The epidermis is the outermost protective layer of a typical young dicotyledonous stem. It is covered with a thin layer of cuticle and may bear trichomes and stomata. The epidermis provides protection to the stem against physical damage and helps in reducing water loss through transpiration.
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Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 3

Which part of a dicotyledonous stem is referred to as the "starch sheath"?

Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 3
The innermost layer of the cortex in a dicotyledonous stem is referred to as the "starch sheath." The endodermis contains cells rich in starch grains.
Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 4
Which tissue is absent in the phloem of a monocotyledonous stem?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 4
In the phloem of a monocotyledonous stem, phloem parenchyma is absent. Instead, water-containing cavities are present within the vascular bundles.
Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 5
What type of vascular bundles are found in a monocotyledonous stem?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 5
Monocotyledonous stems have vascular bundles that are "conjoint and closed." This means the vascular bundles are scattered throughout the stem and have closed bundles with no cambium present.
Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 6
What is the characteristic arrangement of vascular bundles in a dicot stem?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 6
In a dicot stem, the characteristic arrangement of vascular bundles is "conjoint, open," meaning they are arranged in a ring-like pattern and have endarch protoxylem.
Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 7
What provides mechanical strength to the young stem in a dicotyledonous plant?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 7
The hypodermis, composed of collenchymatous cells just below the epidermis, provides mechanical strength to the young stem in a dicotyledonous plant.
Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 8
What is the term for the patches of sclerenchyma present above the phloem in a dicotyledonous stem?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 8
In a dicotyledonous stem, the patches of sclerenchyma present above the phloem are called the pericycle.
Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 9
What type of vascular bundle arrangement is characteristic of a monocot stem?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 9
The characteristic arrangement of vascular bundles in a monocot stem is "scattered," meaning they are dispersed throughout the stem.
Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 10
What type of cells occupy the central portion of a dicotyledonous stem?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous Plant - Stem (May 4) - Question 10
The central portion of a dicotyledonous stem is occupied by a large number of rounded, parenchymatous cells with large intercellular spaces, constituting the pith.
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