Anatomy of Flowering Plants Test

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Anatomy of Flowering Plants Test - 1

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Question 1
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Tracheids differ from vessels in having

A
Rounded structure

B
Pits in walls

C
Pointed tips

D
All of these

Solution

Explanation:

Tracheids and vessels are main water and mineral conducting tissues of xylem. Tracheid have pointed tips but vessels have blunt ends.
Question 2
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Which is the function of companion cells?

A
Controlling the functions of sieve tubes.

B
To store food materials like resins, latex etc.

C
To maintain the pressure gradient in the sieve tubes.

D
Radial conduction of water.

Solution

Explanation:

companion cell: any of a number of specialized parenchymal cells adjacent to a sieve tube in the phloem of flowering plants, believed to regulate the flow of nutrients through the tube.
Question 3
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The characteristic feature of which cells have lignified thickening at the corner?

A
Chlorenchyma

B
Parenchyma

C
Sclerenchyma

D
Collechyma

Solution

Explanation:

Sclerenchyma consists of long, narrow cells with thick and lignified cell walls having a few or numerous pits.
Question 4
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Which is not the function of parenchymatous cells?

A
Secretion

B
Mechanical support

C
Storage

D
Photosynthesis

Solution

Explanation:

The parenchyma performs various functions like photosynthesis, storage, secretion.
Question 5
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Which one is not a xylem cell?

A
Tracheids

B
Vessels

C
Companion cells

D
Xylem parenchyma

Solution

Explanation:

Xylem is a complex tissue, which consists of four kinds of cells. These cells are tracheid, vessels, xylem parenchyma and xylem fibers. Companion cell is part of phloem tissue.
Question 6
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Conjoint type of vascular bundles are common in

A
Stems and roots

B
Stems, roots and leaves

C
Leaves and roots

D
Stems and leaves

Solution

Explanation:

In conjoint type of vascular bundles,the xylem and phloem are situated at the sameradius of vascular bundles. Such vascularbundles are common in stems and leaves. Theconjoint vascular bundles usually have thephloem located only on the outer side of xylem.
Question 7
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A group of cells having a common origin and usually performinga common function is

A
Meristems

B
Tissues

C
Cambium

D
Protoderm

Solution

Explanation:

A tissue is an ensemble of similar cells from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.
Question 8
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The meristems which occur at the tips of roots and shoots and produce primary tissues are called

A
Lateral meristem

B
Intercalary meristem

C
Primary meristem

D
Apical meristem

Solution

Explanation:

Apical meristem is found at the apices, or tips of the plant, both the tip of the shoot and the root, and is a region of actively dividing cells. The definition is easy to remember when you break it down. An apex is the tip, the very end, of something.
Question 9
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A speciallised parenchymatous cells, which are closely associated with sieve tube elements is

A
Phloem parenchyma

B
Phloem fibres

C
Companion cells

D
Xylem parenchyma

Solution

Explanation:

The companion cells are specialised parenchymatous cells, which are closely associated with sieve tube elements. The sieve tube elements and companion cells are connected by pit fields present between their common longitudinal walls.

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Re-Attempt Weekly Quiz Competition

Anatomy of Flowering Plants Test - 1

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Anatomy of Flowering Plants Test - 1

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Question 1

Rounded structure

Pits in walls

Pointed tips

All of these

Solution

Question 2

Controlling the functions of sieve tubes.

To store food materials like resins, latex etc.

To maintain the pressure gradient in the sieve tubes.

Radial conduction of water.

Solution

Question 3

Chlorenchyma

Parenchyma

Sclerenchyma

Collechyma

Solution

Question 4

Secretion

Mechanical support

Storage

Photosynthesis

Solution

Question 5

Tracheids

Vessels

Companion cells

Xylem parenchyma

Solution

Question 6

Stems and roots

Stems, roots and leaves

Leaves and roots

Stems and leaves

Solution

Question 7

Meristems

Tissues

Cambium

Protoderm

Solution

Question 8

Lateral meristem

Intercalary meristem

Primary meristem

Apical meristem

Solution

Question 9

Phloem parenchyma

Phloem fibres

Companion cells

Xylem parenchyma

Solution

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