Anatomy of Flowering Plants Test

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Anatomy of Flowering Plants Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is a primary meristem?

A
Intra fascicular cambium

B
Cork cambium

C
Vascular cambium in roots

D
None of the above

Solution

Intrafascicular cambium is the primary meristem present between xylem and phloem in dicot stem that later forms cambium by dividing itself and contribute in the secondary growth of the plant
So, the correct answer is 'Intra fascicular cambium'
Question 2
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How many of the following plants given below possess open (X) and closed vascular bundles (Y) respectively?
Brassica, Tulipa, Capsicum, Gloriosa, Nicotiana, Aloe, Cicer, Asparagus, Petunia, Colchicum, Sesbania, Zea.

A
X = 6, Y = 6

B
X = 4, Y = 8

C
X = 5, Y = 7

D
X = 9, Y = 3

Solution

Xylem and phloem together called Vascular bundles. In the vascular bundles cambium is present between the xylem and phloem are called Open vascular bundles. These are found in Dicotyledonous stems. eg:Brassica, Capsicum, Nicotiana, Cicer, Petunia, Sesbania(6). Vascular bundles in which cambium is not present between the xylem and phloem are called closed vascular bundles. These are found in monocotyledonous stems. eg:Tulipa, Gloriosa, Aloe, Asparagus, Colchicum, Zea(6).
So the correct option is 'X = 6, Y = 6'.
Question 3
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Which meristem is responsible for the production of secondary tissues?

A
Primary meristem

B
Root apical meristem

C
Shoot apical meristem

D
Secondary meristem

Solution

Meristem is the type of tissue that contains undifferentiated cells. They give rise to different organs of a plant. They are present in zones where growth takes place. There are two types of meristems, primary and secondary meristems. The primary meristem is responsible for the production of vascular cambium, cork cambium, and secondary tissues. Procambium, a type of primary meristem give rise to secondary meristematic tissue. The secondary meristem is responsible for the production of permanent tissues.
Thus, the correct answer is 'Primary meristem.'
Question 4
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Radial vascular bundle is found in

A
Dicot stem only

B
Both dicot stem and monocot stem

C
Both dicot root and monocot root

D
Monocot root only

Solution

Radial bundles are considered to be the vascular bundles in which xylem and phloem are separated by a non-vascular bundle and are located alternate radii on axis.
So the correct option is 'Both dicot root and monocot root'.
Question 5
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Which tissue is responsible for secondary growth in the plants?

A
Vascular cambium

B
Xylem

C
Phloem

D
Cork

Solution

Vascular cambium is responsible for the secondary growth of plants. It is a thin layer of cells found in plants, separating xylem and phloem. These cells divide and multiply with the plant's secondary growth, in which it increases in girth size.
So, the correct answer is 'Vascular cambium'.
Question 6
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To get a carpet like grass, lawns are mowed regularly. This is done to

A
Remove the shoot apical meristem

B
Remove the axillary buds

C
Accelerate the growth of terminal bud

D
Both B and C

Solution

To get a carpet like grass, lawns are mowed regularly so as to remove the shoot apical meristem. Mowing results in the decapitation. This will promote the growth of lateral buds and inhibits apical dominance. Due to this, the grass becomes bushy and growth is faster. Regular mowing maintains the evenness of the grass in the lawn.
Thus, the correct answer is 'Remove the shoot apical meristem.'
Question 7
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Find out the incorrect statement.

A
Epidermis is the outermost layer of the primary plant body

B
Epidermis is made of elongated and compactly arranged cells

C
Epidermal cells are parenchymatous with a small amount of cytoplasm and a large vacuole

D
Epidermis usually lack cuticle in terrestrial plants

Solution

A. Epidermis is the outermost layer of cells that covers the entire plant body.
B. Epidermis is made up of elongated or tubular cells which are compactly arranged without intercellular spaces.
C. Epidermal cells are generally parenchymatous and have small amount of cytoplasm with a large vacuole.
D. Terrestrial plants have a layer of cuticle on epidermis which prevents excessive water loss due to transpiration.
Hence, statement D is incorrect.
So, the correct answer is 'Epidermis usually lack cuticle in terrestrial plants'.
Question 8
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The number of growth rings (sum of the rings of spring wood and autumn wood) in the year 2000 is found to be 20. What will be the number of annual rings in 2018?

A
38

B
8

C
28

D
18

Solution

Every year one spring ring and one autumn rings make one annual ring which is used to estimate the age of the plant.
Hence the number of rings present in 2000=20
Therefore, the number of rings present in 2018=20+18
That is equal to 38 rings after 18 years.
So the correct option is '38'
Question 9
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Which of the following are water transporting elements in flowering plants?

A
Tracheids only

B
Vessels only

C
Tracheids and vessels

D
Either tracheids or vessels (not both)

Solution

Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts. Tracheids are one of two types of tracheary elements, vessel elements being the other. Tracheids, unlike vessel elements, do not have perforation plates. A vessel element or vessel member (trachea) is one of the cell types found in xylem, the water conducting tissue of plants. Vessel elements (tracheae) are typically found in flowering plants (angiosperms) but absent from most gymnosperms such as conifers.

So the correct option is 'Tracheids and Vessels'.
Question 10
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Stone cells is the alternative name of:

A
Cortical fibres

B
Sclereids

C
Xylary fibres

D
Phloem fibres

Solution

A. Cortical fibres are the extraxylary fibres present in cortex.

B. Sclereids are excessively thick walled short sclerenchyma cells also known as stone cells.

C. Xylary fibres are the sclerenchyma fibres present in the xylem.

D. Phloem fibres are the sclerenchyma fibres present in the phloem.

So,the correct answer is option B.

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Anatomy of Flowering Plants Test - 67

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Anatomy of Flowering Plants Test - 67

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Question 1

Intra fascicular cambium

Cork cambium

Vascular cambium in roots

None of the above

Solution

Question 2

X = 6, Y = 6

X = 4, Y = 8

X = 5, Y = 7

X = 9, Y = 3

Solution

Question 3

Primary meristem

Root apical meristem

Shoot apical meristem

Secondary meristem

Solution

Question 4

Dicot stem only

Both dicot stem and monocot stem

Both dicot root and monocot root

Monocot root only

Solution

Question 5

Vascular cambium

Xylem

Phloem

Cork

Solution

Question 6

Remove the shoot apical meristem

Remove the axillary buds

Accelerate the growth of terminal bud

Both B and C

Solution

Question 7

Epidermis is the outermost layer of the primary plant body

Epidermis is made of elongated and compactly arranged cells

Epidermal cells are parenchymatous with a small amount of cytoplasm and a large vacuole

Epidermis usually lack cuticle in terrestrial plants

Solution

Question 8

38

8

28

18

Solution

Question 9

Tracheids only

Vessels only

Tracheids and vessels

Either tracheids or vessels (not both)

Solution

Question 10

Cortical fibres

Sclereids

Xylary fibres

Phloem fibres

Solution

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