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Assertion Reason Test: Anatomy of Flowering Plants


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10 Questions MCQ Test Additional Documents & Tests for NEET | Assertion Reason Test: Anatomy of Flowering Plants

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Assertion Reason Test: Anatomy of Flowering Plants - Question 1

A: Endodermis is present between the general cortex and pericycle in the maize stem.

R: Eustele is present in maize stem.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 1 In maize, endodermis is not distinct because it is a monocot.

Atactostele is present in monocot e.g., in maize

Assertion Reason Test: Anatomy of Flowering Plants - Question 2

A: Bast fibres are collenchymatous fibres.

R: Fibres are absent in secondary phloem.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 2 Bast fibres are phloem fibres.

Fibres are present in secondary phloem.

Assertion Reason Test: Anatomy of Flowering Plants - Question 3

A: Oldest layer of sapwood lies just outside vascular cambium.

R: Sapwood contains actively conducting vessels and occupies the central part of the stem.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 3 Oldest layer of sapwood will lie close intact in pith.

Heartwood occupies the central portion.

Assertion Reason Test: Anatomy of Flowering Plants - Question 4

A: Bark is all the tissue outside steler cambium.

R: Bark is formed due to the activity of phellogen only.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 4 Bark also includes phloem, which is formed by the vascular cambium.

Assertion Reason Test: Anatomy of Flowering Plants - Question 5

A: According to Clowes, there are three histogens in monocot root.

R: In dicot roots, innermost groups of initials form root cap.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 5 According to Hanstein, there are three histogens in monocot root.

In dicot root, the innermost group of cells form a central stele.

Assertion Reason Test: Anatomy of Flowering Plants - Question 6

A: Intercalary meristems are commonly located at the base of leaves, above the nodes or below the nodes.

R: Vacuoles are large-sized in the cells of intercalary meristem.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 6 Vacuoles are small-sized in the cells of intercalary meristem. They are large-sized in the cells of the elongation phase.

Assertion Reason Test: Anatomy of Flowering Plants - Question 7

A: Cells of sclerenchyma have thickened secondary walls.

R: Cells have deposition of lignin.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 7 Sclerenchyma has lignified cell wall

Assertion Reason Test: Anatomy of Flowering Plants - Question 8

A: Sieve tubes and companion cells are related ontogenetically.

R: Both develop from the same mother cell.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 8 Sieve tubes and companion cells are sister cells.

Assertion Reason Test: Anatomy of Flowering Plants - Question 9

A: In monocot roots, pericycle gives rise to lateral roots and cork cambium.

R: It has tetrach vascular bundles usually.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 9 In monocots, roots pericycle does not give rise lateral roots and cork cambium.

It has polyarch vascular bundles.

Assertion Reason Test: Anatomy of Flowering Plants - Question 10

A: Complementary cells are cut-off by phellogen towards outside.

R: Phellogen is partially secondary in origin.

Detailed Solution for Assertion Reason Test: Anatomy of Flowering Plants - Question 10 Phellogen is completely secondary in origin.
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