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NEET • BIOLOGY • ANATOMY OF FLOWERING PLANTS

Anatomy of flowering plants practice · Mixed difficulty

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Showing 1-30 of 394 questions

1 Medium

1 of 394

Understanding +4 | -1

Vascular bundles in monocotyledons are considered closed because

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Correct option: D

There is no cambium

Vascular bundles in monocotyledons are considered closed because they lack cambium, which prevents secondary growth.

2 Medium

2 of 394

Understanding +4 | -1

I. It is made up of elongated, compactly arranged cells
II. It is usually single layered
III. It is parenchymatous
IV. Large vacuole is present
Which of the above characters belong to the epidermis?

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Correct option: D

All of these

Option D is correct because all four characteristics accurately describe the epidermis: elongated cells, single-layered structure, parenchymatous nature, and the presence of a large vacuole.

3 Hard

3 of 394

Understanding +4 | -1

Which type of Tissues can be involved in photosynthesis

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Correct option: D

All of these

Option D (All of these) is correct because parenchyma, collenchyma, and chlorenchyma tissues can be involved in photosynthesis.

4 Medium

4 of 394

Remembering +4 | -1

Central part of root occupied by parenchymatous (thin or thick walled) cells is called

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Correct option: A

Pith

Option A (Pith) is correct because the pith is the central region of the root, composed of parenchymatous cells, which can be thin- or thick-walled.

5 Medium

5 of 394

Remembering +4 | -1

Casparian strips are present in the ……… of the root.

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Correct option: D

Endodermis

Option D (Endodermis) is correct because Casparian strips, made of suberin, are found in the radial and transverse walls of endodermal cells in roots.

6 Medium

6 of 394

Remembering +4 | -1

I. Vessel, II. Tracheids, III. Companion cells
Which of the following is/are living cells?

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Correct option: B

Only III

Option B (Only III) is correct because only companion cells are living cells among the given options; vessels and tracheids are dead at maturity.

7 Easy

7 of 394

Understanding +4 | -1

Assertion: Tracheids are dead cells.
Reason: Tracheids have lignified cell wall.

View answer and explanation

Correct option: A

If both the assertion and the reason are true and the
reason is a correct explanation of the
assertion

Option A (If both the assertion and the reason are true and the reason is a correct explanation of the assertion) is correct because tracheids are indeed dead cells, and their lignified cell walls are the very reason for their structural support and thus their dead nature.

8 Medium

8 of 394

Understanding +4 | -1

The balloon-shaped structures called tyloses

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Correct option: D

are extensions of xylem parenchyma cells into vessels

Option D is correct because tyloses are extensions of xylem parenchyma cells into vessels, blocking them.

9 Easy

9 of 394

Remembering +4 | -1

Meristem consists of

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Correct option: B

Cells in continuous state of cell divisions

Option B (Cells in continuous state of cell divisions) is correct because meristematic cells are characterized by their ability to actively divide.

10 Easy

10 of 394

Remembering +4 | -1

Exarch and polyarch xylem strands are found in

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Correct option: C

Monocot root

Option D is correct because exarch and polyarch xylem arrangements are characteristic of monocot and dicot roots.

11 Hard

11 of 394

Understanding +4 | -1

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

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Correct option: B

Teak and pine

Option B (Teak and pine) is correct because both teak (a dicot) and pine (a gymnosperm) exhibit significant secondary growth, making them suitable for studying this process.

12 Easy

12 of 394

Remembering +4 | -1

Stomatal apparatus consists of

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Correct option: D

All of these

Option D (All of these) is correct because the stomatal apparatus includes the stomatal aperture, guard cells, and subsidiary cells.

13 Easy

13 of 394

Remembering +4 | -1

The first formed primary phloem is referred as ...A… The later formed primary phloem is referred as …B…
Choose the correct combination of A and B

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Correct option: D

A–protophloem; B–metaphloem

Option D (A–protophloem; B–metaphloem) is correct because the first formed primary phloem is protophloem, and the later formed primary phloem is metaphloem.

14 Easy

14 of 394

Understanding +4 | -1

Where would look for active cell division in plants?

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Correct option: D

At the tip of root and shoot

Option D is correct because active cell division occurs at the tips of roots and shoots where meristems are located.

15 Hard

15 of 394

Remembering +4 | -1

In the monocot root, we observe:

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Correct option: A

suberised exodermis, polyarch xylem, pith

Option A (suberised exodermis, polyarch xylem, pith) is correct because monocot roots typically have a suberised exodermis, many xylem bundles (polyarch), and a well-developed pith.

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ANIMAL KINGDOM 756 MCQs PLANT KINGDOM 415 MCQs MOLECULAR BASIS OF INHERITANCE 404 MCQs CHEMICAL COORDINATION AND INTEGRATION 387 MCQs PRINCIPLE OF INHERITANCE AND VARIATION 374 MCQs EVOLUTION 362 MCQs

16 Medium

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Remembering +4 | -1

The meristem which is particularly present in the mature regions of roots and shoots and produce woody axis and appear later than the primary meristem is called

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Correct option: A

Secondary meristem

Option A (Secondary meristem) is correct because secondary meristems appear later than primary meristems and produce the woody axis in mature regions of roots and shoots.

17 Hard

17 of 394

Remembering +4 | -1

In old trees, central dark coloured, non – conducting part of secondary xylem is referred to as?

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Correct option: A

Heart wood

Option A (Heart wood) is correct because heartwood is the central, dark-colored, non-conducting part of secondary xylem in old trees.

18 Easy

18 of 394

Understanding +4 | -1

Open vascular bundles

View answer and explanation

Correct option: C

Have cambium in between the xylem and phloem

Option C (Have cambium in between the xylem and phloem) is correct because open vascular bundles are characterized by the presence of cambium between the xylem and phloem, allowing for secondary growth.

19 Easy

19 of 394

Remembering +4 | -1

Which of the three sub-zones of cortex of dicot stem performs the function of providing mechanical strength to young stem?

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Correct option: A

Hypodermis

Option A (Hypodermis) is correct because the hypodermis, typically composed of collenchyma cells, provides mechanical strength to young dicot stems.

20 Easy

20 of 394

Understanding +4 | -1

Consider the following statements.
I. In a dicot root, the vascular bundles are collateral and endarch.
II. The innermost layer of cortex in a dicot root is endodermis.
III . In a dicot root, the phloem masses are separated from the xylem by parenchymatous cells that are known as the conjunctive tissue.

View answer and explanation

Correct option: C

I is false, but II and III are true

Option C (I is false, but II and III are true) is correct because dicot roots have radial vascular bundles (not collateral), the innermost layer of the cortex is the endodermis, and conjunctive tissue separates xylem and phloem.

21 Medium

21 of 394

Remembering +4 | -1

Cell wall of collenchyma composed of?

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Correct option: D

All of these

Option D (All of these) is correct because the cell wall of collenchyma is composed of cellulose, hemicellulose, and pectin, which contribute to its thickening and flexibility.

22 Medium

22 of 394

Understanding +4 | -1

All types of Tissue systems have?

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Correct option: D

Parenchyma

Option D (Parenchyma) is correct because parenchyma is a fundamental tissue found in all tissue systems of plants.

23 Hard

23 of 394

Understanding +4 | -1

Consider the following statements.

Statement I: Hypodermis is sclerenchymatous in maize stem.

Statement II: Unequal size vascular bundle present in maize stem.

Select the correct option.

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Correct option: C

Both Statement I and Statement II are correct

Option C (Both Statement I and Statement II are correct) is correct because maize stem has a sclerenchymatous hypodermis and vascular bundles of unequal size.

24 Hard

24 of 394

Understanding +4 | -1

Stele is constituted by all given tissues, except

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Correct option: B

Endodermis

Option B is correct because the endodermis, while surrounding the stele, is not considered a part of the stele itself.

25 Medium

25 of 394

Analyzing +4 | -1

Which of the following is incorrectly matched?

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Correct option: C

Vascular cambium in dicot root - Partly primary in origin

Option C is incorrectly matched. Vascular cambium in dicot roots is entirely secondary in origin, arising from conjunctive tissue and pericycle.

26 Medium

26 of 394

Understanding +4 | -1

The simple tissues which are dead and without protoplast performs all of the given functions, except

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Correct option: C

Performs photosynthesis

Option C (Performs photosynthesis) is correct because sclerenchyma is a dead tissue and cannot perform photosynthesis; photosynthesis is performed by parenchyma cells containing chloroplasts (chlorenchyma).

27 Hard

27 of 394

Understanding +4 | -1

Tyloses an outgrowth from ray or axial parenchyma cell into the lumen of a vessel, which partially or completely blocks the cavity are present in

View answer and explanation

Correct option: B

Heartwood

Option B (Heartwood) is correct because tyloses are characteristic features of heartwood, which is the non-conducting, older wood in the center of the tree.

28 Hard

28 of 394

Understanding +4 | -1

Cambium is considered as a lateral meristem because

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Correct option: B

It causes increase in girth.

Option B is correct because cambium is a lateral meristem responsible for secondary growth, leading to an increase in the plant's girth.

29 Easy

29 of 394

Remembering +4 | -1

Xylem tissue is composed of

View answer and explanation

Correct option: C

Four different kinds of elements

Option C (Four different kinds of elements) is correct because xylem is composed of tracheids, vessels, xylem parenchyma, and xylem fibers.

30 Hard

30 of 394

Remembering +4 | -1

The surface area of leaves in monocotyledon plant can be regulated by the help of

View answer and explanation

Correct option: C

Bulliform cells

Option C (Bulliform cells) is correct because bulliform cells, present in the upper epidermis of monocot leaves, regulate leaf surface area by causing the leaf to curl or uncurl based on water availability.

Revision notes and key takeaways

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Key Takeaways

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