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Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - NEET MCQ


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10 Questions MCQ Test - Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3)

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Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 1

What is the outermost layer of a plant root called?

Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 1
The outermost layer of a plant root is called the epidermis. It is the first layer of cells that come into contact with the soil and serves as a protective barrier for the inner tissues of the root.
Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 2

Which specialized structures protrude from many epiblema cells in the form of unicellular extensions?

Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 2
Root hairs are unicellular extensions that protrude from many epiblema cells. They greatly increase the surface area of the root for absorption of water and nutrients from the soil.
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Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 3

What is the innermost layer of the cortex called, and what unique feature does it possess?

Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 3
The innermost layer of the cortex is called the endodermis, and its cells have Casparian strips on both tangential and radial walls. These Casparian strips are made of water-impermeable, waxy material, serving as a barrier that regulates the movement of water and solutes into the vascular tissue.
Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 4
What is the function of conjunctive tissue in a plant root?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 4
Conjunctive tissue, located between the xylem and phloem, facilitates the transport of water and nutrients between these two vascular tissues in the root.
Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 5
How many xylem and phloem patches are usually present in the dicot root?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 5
In the dicot root, there are usually two xylem and phloem patches.
Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 6
In which tissue of the root does the initiation of lateral roots and vascular cambium during secondary growth occur?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 6
The initiation of lateral roots and vascular cambium during secondary growth takes place in the pericycle, which is a few layers of thick-walled parenchymatous cells located next to the endodermis.
Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 7
What significant difference exists between dicot and monocot roots regarding secondary growth?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 7
Dicot roots have the ability to undergo secondary growth, which means they can increase in diameter over time due to the activity of vascular cambium. Monocot roots, on the other hand, lack this capacity and do not undergo secondary growth.
Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 8
In monocot roots, how many xylem bundles are typically present?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 8
Monocot roots typically have more than six xylem bundles, a condition known as polyarch, which distinguishes them from dicot roots.
Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 9
What is the main function of the pith in plant roots?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 9
The pith in plant roots primarily serves as a storage tissue for water and nutrients, providing a reserve for the plant's needs.
Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 10
Which tissues in the root constitute the stele?
Detailed Solution for Test: Anatomy of Monotyledonous and Dicotyledous plant - Root (May 3) - Question 10
The stele in a root consists of tissues located on the inner side of the endodermis.
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