Anatomy of Flowering Plants Test

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Anatomy of Flowering Plants Test - 65

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Weekly Quiz Competition

Question 1
1 / -0

Which one of the following cell types always divide by anticlinal division?

A
Fusiform initial cells

B
Root cap

C
Protoderm

D
Phellogen

Solution

$$\textbf{Correct option:}$$ (C)

$$\textbf{Explanation:}$$

$$\bullet$$ A cell may divide by periclinal division or anticlinal division.

$$\bullet$$ In anticlinal division cell divides perpendicular to the surface. It increases the number of cells but the number of layers or rows remains constant.

$$\bullet$$ In periclinal division cell divides parallel to the surface. It increases the number of cells as well as number of layers or rows.

$$\bullet$$ Protoderm forms uniseriate epidermis as a result of anticlinal cell division .

$$\bullet$$ In certain xerophytic plants, periclinal division gives rise to the multiseriate epidermis.

$$\bullet$$ Hence the correct option is (C)
Question 2
1 / -0

Phellogen and phellem respectively denote

A
cork and cork cambium

B
cork cambium and cork

C
secondary cortex and cork

D
cork and secondary cortex
Solution
Correct Option: B
Explanation:
Cortical cells differentiate in the dicot stem to give birth to another meristematic tissue known as cork cambium or phellogen.
After division, it produces phellem (cork) on the outer side and the secondary cortex on the inner side (phelloderm).
Hence, phellogen and phellem denote cork cambium and cork respectively.
Question 3
1 / -0

A conjoint and open vascular bundle will be observed in the transverse section of

A
monocot root

B
monocot stem

C
dicot root

D
dicot stem

Solution

Open vascular bundle: If the cambium is present in the vascular bundle; it is called open. It exhibit secondary growth.
Closed vascular bundle: If the cambium is absent, the vascular bundle is called closed. IT do not exhibit secondary growth.
In moncot stem, vascular bundles are conjoint, collateral or concentric, endarch and closed.
In dicot stem, vascular bundles are conjoint, collateral or bicollateral, endarch and open.
So, the correct answer is 'Dicot stem'.
Question 4
1 / -0

The type of vascular bundles shown in the figure is commonly found in

A
Stems

B
Roots

C
Leaves

D
Both A and B

Solution

The given figure shows the arrangement of vascular bundles in which xylem and phloem are arranged alternately along the circumference of a circle as seen. As both the bundles occupy different radii it is called radial type of vascular bundles and mainly found in roots.
So the correct option is 'Roots'.
Question 5
1 / -0

In a dicotyledonous stem, the sequence of tissues from the outside to the inside is

A
Phellem, pericycle, endodermis, phloem

B
Phellem, phloem, endodermis, pericycle

C
Phellem, phloem, pericycle, phloem

D
Pericycle, phellem, endodermis, phloem

Solution

Secondary growth is the growth that results from cell division in the cambia or lateral meristems and that causes the stems and roots to thicken. The transverse section of a dicot stem having secondary growth, the sequence of tissues from outside to inside is: Phellem, Pericycle, Endodermis, Phloem
So, the correct answer is 'Phellem-pericycle-endodermis-phloem'.
Question 6
1 / -0

On the basis of location and function, how many types of the tissue system are found in vascular plants?

A
$$2$$

B
$$3$$

C
$$4$$

D
$$5$$

Solution

On the basis of location and function, three main tissue systems are found in plants, dermal, vascular, and ground tissue. Dermal tissue is composed of epidermal cells, closely packed cells that secrete a waxy cuticle that aids in the prevention of water loss. The primary components of vascular tissue are the xylem and phloem. The ground tissue of plants includes all tissues that are neither dermal nor vascular. The three types of ground tissue, parenchyma, collenchyma, and sclerenchyma, function in photosynthesis, storage, regeneration, support, and protection.
So, the correct answer is '3'.
Question 7
1 / -0

Match List I with List Il and select the correct answer using the codes given below the lists:
List-I
(Plant tissue) List-II
(Function)
A. Sclerenchyma 1. Conduction of water
B. Xylem 2. Transport of food
C. Phloem 3. Mechanical strength
D. Meristem
4. Cell division
5. Carbon assimilation

A
A - 4, B - 2, C - 5, D - 3

B
A - 1, B - 4, C - 3, D - 5

C
A - 3, B - 1, C - 2, D - 4

D
A - 2, B - 5, C - 4, D - 1

Solution

A)Sclerenchyma is a permanent tissue that provides mechanical strength to plants.
B)Xylem and phloem are complex permanent tissues that help in the conduction of water and transport of food respectively, throughout plants.
C)Meristem is the primary tissue that divides and increase the length of the plant.
So the correct option is 'A - 3, B - 1, C - 2, D - 4'
'
Question 8
1 / -0

How many tissues are present within dicot root?

A
$$5$$

B
$$6$$

C
$$3$$

D
$$12$$

Solution

Dicot roots have xylem in the center of the root and phloem outside the xylem. Phloem is surrounded by the pericycle followed by endodermis. Pericycle is made up parenchyma cells and sclerenchyma cells.
The cortex is the outer most layer of the dicot root. Cortex is made up of epithelium cells. Pith is absent in it. Hence, total 5 types of tissues are present within dicot root.
Thus, the correct answer is '5.'
Question 9
1 / -0

Sclerenchyma fibres are absent in

A
Protoxylem

B
Metaphloem

C
Metaxylem

D
Both A and B

Solution

There are three types of tissues found in plants - parenchyma, sclerenchyma and collenchyma. The major function of the sclerenchyma tissues is support. However, these tissues are dead and have a thick wall containing lignin. These tissues are absent in protoxylem. Protoxylem is the first xylem to be formed. It is the primary xylem. It contains large amount of parenchyma -living cells.
Thus, the correct answer is 'Protoxylem.'
Question 10
1 / -0

Which among the following statements is true about vascular bundles in the young monocot stem?

A
Collateral open

B
Bicollateral open

C
Collateral closed

D
Bicollateral closed.

Solution

In young monocot stem, the primary xylem is located on the inner side of the bundle, and the primary phloem is located on the outer side of the bundle said to be collateral type of vascular bundle and cambium is absent between phloem and xylem which represents the closed type of vascular bundle.
So, the correct answer is 'Collateral closed'.

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Re-Attempt Weekly Quiz Competition

	List-I (Plant tissue)		List-II (Function)
A.	Sclerenchyma	1.	Conduction of water
B.	Xylem	2.	Transport of food
C.	Phloem	3.	Mechanical strength
D.	Meristem	4.	Cell division
		5.	Carbon assimilation

Anatomy of Flowering Plants Test - 65

Result

Anatomy of Flowering Plants Test - 65

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Question 1

Fusiform initial cells

Root cap

Protoderm

Phellogen

Solution

Question 2

cork and cork cambium

cork cambium and cork

secondary cortex and cork

cork and secondary cortex

Solution

Question 3

monocot root

monocot stem

dicot root

dicot stem

Solution

Question 4

Stems

Roots

Leaves

Both A and B

Solution

Question 5

Phellem, pericycle, endodermis, phloem

Phellem, phloem, endodermis, pericycle

Phellem, phloem, pericycle, phloem

Pericycle, phellem, endodermis, phloem

Solution

Question 6

$$2$$

$$3$$

$$4$$

$$5$$

Solution

Question 7

A - 4, B - 2, C - 5, D - 3

A - 1, B - 4, C - 3, D - 5

A - 3, B - 1, C - 2, D - 4

A - 2, B - 5, C - 4, D - 1

Solution

Question 8

$$5$$

$$6$$

$$3$$

$$12$$

Solution

Question 9

Protoxylem

Metaphloem

Metaxylem

Both A and B

Solution

Question 10

Collateral open

Bicollateral open

Collateral closed

Bicollateral closed.

Solution

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