Anatomy of Flowering Plants Test

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Anatomy of Flowering Plants Test - 90

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Question 1
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For a critical study of secondary growth in plants, which one of the following pairs is suitable?

A
Sugarcan and sunflower

B
Teak and pine

C
Deodar and fern

D
Wheat and maiden hair fern

Solution

Secondary growth results in the increase in thickness. The increase in diameter is due to the formation of secondary tissues as a result of the activities of vascular cambium and cork cambium. This secondary growth is characteristic of dicot stem and root. For example, teak and pine.
Thus, the correct answer is option B.
Question 2
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The cylinder of tissues lying inside the endodermis of plant stems and roots, containing the vascular tissues, is known as

A
Pith

B
Cambium

C
Stele

D
Pericycle

Solution

In a vascular plant, the stele is the central part of the root or stem containing the tissues derived from the procambium. These include vascular tissue, in some cases ground tissue (pith) and a pericycle, which, if present, defines the outermost boundary of the stele. Outside the stele lies the endodermis, which is the innermost cell layer of the cortex. The earliest vascular plants had stems with a central core of vascular tissue. This consisted of a cylindrical strand of xylem, surrounded by a region of phloem. Around the vascular tissue there might have been an endodermis that regulated the flow of water into and out of the vascular system. Such an arrangement is termed a protostele.
So the correct option is 'stele'.
Question 3
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Guard cells are considered as modified epidermal cells in the respect of :-
(i) Large in size
(ii) Possess chloroplast
(iii) Radially arranged microfibrils in cell wall
(iv) Differential thickening of walls
(v) Lack of nucleus
(vi) Non - living

A
i, ii, iii

B
ii, iii, vi

C
ii, iii, iv

D
All of these

Solution

Guard cells are considered as modified epidermal cells in the respect of
1.Large in size
2.Possess chloroplast
3.Radially arranged microfibrils in the cell wall.
Question 4
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Which of the following are the types of simple permanent tissues?

A
Parenchyma

B
Sclerenchyma

C
Collenchyma

D
All of the above

Solution

Simple permanent tissues are simple as they are made up of only one type of cell. They are known as permanent tissue because they have lost the power of division and are specialized. They are classified into three main types parenchyma, sclerenchyma, and collenchyma.
So, the correct answer is 'All of the above'.
Question 5
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The meristem, in which the cells divide in several planes is

A
plate meristem

B
rib meristem

C
mass meristem

D
lateral meristem

Solution

Plate meristem- It divides in two planes and forms a plate of cells. E.g- Epidermis.
Rib meristem- It divides in a single plane and forms a row of cells. E.g- Cortex.
Mass meristem- It divides in all planes and forms a mass of cells. E.g- Endosperm.
Lateral meristem- It divides preclinically or radially. . It helps to increase the thickness. E.g- Vascular cambium
So, the correct option is C.
Question 6
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The tissue that brings about an increase in the height of the plant is

A
Lateral Meristem

B
Apical Meristem

C
Intercalary Meristem

D
None of the above

Solution

The apical meristematic tissue is found on the tips of shoot and roots in plants. Apical meristem induces the growth of plants. The cells present in the apical meristem divide rapidly and brings about an increase in the height of the plant. Thus, the vital role of apical meristem is to induce the primary growth in plants.
So, the correct answer is 'Apical meristem'.
Question 7
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Select the correct option on the basis of given features, to which they belong:
A. Cambium - Develops later
B. Pith - Absent
C. Epidermis -Possess unicelluiar hairs

A
Dicot stem

B
Monocot stem

C
Dicot root

D
Monocot root

Solution

In Dicot root, Cambium develops at the time of secondary growth, Pith is absent and Epidermis possess unicellular hairs i.e. root hairs.
So, the correct option is 'Dicot root'.
Question 8
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Procambium forms

A
Only primary vascular bundles

B
Only vascular cambium

C
Only cork cambium

D
Primary vascular bundles and vascular cambium

Solution

The cells that eventually form the vascular cambium come from two sources, the procambium in the vascular bundles and the interfascicular parenchyma cells between vascular bundles.
So the correct option is ' Only primary vascular bundles'.
Question 9
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Which of the following collateral vascular bundles with endarch xylem are found?
a) Young root of bean b) Maize root c) Young stem of bean
d)Maize stem

A
a and b only

B
c and d only

C
a and c only

D
b and d only

Solution

The collateral vascular bundle is a type of vascular bundle in which xylem is located towards the inner side and phloem towards the outer side. Collateral vascular bundles are seen only in dicot and monocot stems.
So, the correct option is 'c and d only'.
Question 10
1 / -0

In a dicot root vascular cambium is

A
Partially primary and partially secondary in origin

B
completely primary in origin

C
completely second in origin

D
not found

Solution

Vascular cambium is a plant tissue. It is located between xylem and phloem in roots and stems of plants. The cambium located between xylem and phloem is called intrafascicular cambium. In secondary origin, the cambium is called interfascicular cambium. In dicot root, the cambium develops in primary and secondary origin.
So, the correct option is 'Partially primary and partially secondary in origin'.

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Anatomy of Flowering Plants Test - 90

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Anatomy of Flowering Plants Test - 90

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SHARING IS CARING

Question 1

Sugarcan and sunflower

Teak and pine

Deodar and fern

Wheat and maiden hair fern

Solution

Question 2

Pith

Cambium

Stele

Pericycle

Solution

Question 3

i, ii, iii

ii, iii, vi

ii, iii, iv

All of these

Solution

Question 4

Parenchyma

Sclerenchyma

Collenchyma

All of the above

Solution

Question 5

plate meristem

rib meristem

mass meristem

lateral meristem

Solution

Question 6

Lateral Meristem

Apical Meristem

Intercalary Meristem

None of the above

Solution

Question 7

Dicot stem

Monocot stem

Dicot root

Monocot root

Solution

Question 8

Only primary vascular bundles

Only vascular cambium

Only cork cambium

Primary vascular bundles and vascular cambium

Solution

Question 9

a and b only

c and d only

a and c only

b and d only

Solution

Question 10

Partially primary and partially secondary in origin

completely primary in origin

completely second in origin

not found

Solution

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