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NEET • BIOLOGY • ANATOMY OF FLOWERING PLANTS
Anatomy of flowering plants practice · Easy
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1
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1 of 128
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Assertion: Tracheids are dead cells.
Reason: Tracheids have lignified cell wall.
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
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.
2
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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.
3
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Exarch and polyarch xylem strands are found in
View answer and explanation
Correct option: C
Monocot root
Option D is correct because exarch and polyarch xylem arrangements are characteristic of monocot and dicot roots.
4
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Stomatal apparatus consists of
View answer and explanation
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.
5
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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
Choose the correct combination of A and B
View answer and explanation
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.
6
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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.
7
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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.
8
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Which of the three sub-zones of cortex of dicot stem performs the function of providing mechanical strength to young stem?
View answer and explanation
Correct option: A
Hypodermis
Option A (Hypodermis) is correct because the hypodermis, typically composed of collenchyma cells, provides mechanical strength to young dicot stems.
9
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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.
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.
10
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Xylem tissue is composed of
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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.
11
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The cells without nuclei are present in
View answer and explanation
Correct option: D
Members of sieve tube
Option D (Members of sieve tube) is correct because sieve tube elements lose their nuclei at maturity to facilitate efficient transport of substances.
12
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A common structural feature of vessel elements and sieve tube elements is
View answer and explanation
Correct option: B
Pores on lateral walls
Option B is correct because both vessel elements and sieve tube elements have pores on their lateral walls for transport.
13
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Statement I: Companion cells help in maintaing the pressure gradient in Sieve tubes.
Statement II: In gymnosperm companion cells absent and albuminous cells present.
Choose the correct answer from the option given below:
Statement II: In gymnosperm companion cells absent and albuminous cells present.
Choose the correct answer from the option given below:
View answer and explanation
Correct option: D
Both Statement I and Statement II are correct
Option D (Both Statement I and Statement II are correct) is correct because companion cells maintain the pressure gradient in sieve tubes, and gymnosperms lack companion cells, possessing albuminous cells instead.
14
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Apical meristem and intercalary meristem are called primary meristem because?
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Correct option: A
They appear early in plant and contributes to the formation of primary plant body
Option A is correct because primary meristems appear early and contribute to the primary plant body.
15
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Apical meristems are present at the
View answer and explanation
Correct option: D
Both (a) and (b)
Option D (Both (a) and (b)) is correct because apical meristems are located at the tips of both roots and shoots, responsible for primary growth.
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16
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Primary growth is caused by :
View answer and explanation
Correct option: A
Apical meristem
Option A is correct because primary growth, which increases the length of the plant, is caused by the apical meristem.
17
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Meristamatic tissue helps in the
View answer and explanation
Correct option: B
Growth of plant
Option B (Growth of plant) is correct because meristematic tissues are actively dividing cells responsible for plant growth.
18
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The living mechanical tissue of plants is
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Correct option: A
Collenchyma
Option A (Collenchyma) is correct because collenchyma is a living mechanical tissue that provides support to plants.
19
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Intercellular spaces are found in …A… region. Intercellular spaces are absent in …B… region. Choose the correct option for A and B
View answer and explanation
Correct option: A
A-cortex, B-endodermis
Option A (A-cortex, B-endodermis) is correct because the cortex region typically has intercellular spaces, while the endodermis lacks them due to Casparian strips.
20
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Passage cells are thin walled cells found in
View answer and explanation
Correct option: A
phloem elements that serve as entry points for substance
for transport to other plant parts
for transport to other plant parts
Option A is correct because passage cells in phloem facilitate substance entry for transport.
21
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Specialised regions of plants having active cell division are called
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Correct option: C
Meristems
Option C (Meristems) is correct because meristems are the regions in plants where active cell division occurs, leading to growth.
22
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Roots have all except
View answer and explanation
Correct option: B
Hypodermis
Option B (Hypodermis) is correct because roots typically lack a distinct hypodermis layer, which is more commonly found in stems.
23
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The chief water conducting elements of xylem in gymnosperms are
View answer and explanation
Correct option: D
Tracheids
Option D (Tracheids) is correct because tracheids are the primary water-conducting elements in gymnosperms, while vessels are more characteristic of angiosperms.
24
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The outermost layer of dicotyledonous root is called
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Correct option: B
Epidermis
Option B (Epidermis) is correct because the epidermis is the outermost layer of the dicotyledonous root.
25
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Vascular tissues of angiosperms differ from those of gymnosperms in
View answer and explanation
Correct option: D
All of these
Option D is correct because angiosperms have vessels in xylem, well-developed sieve tubes and companion cells in phloem, unlike gymnosperms.
26
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Well developed pith is present in
View answer and explanation
Correct option: D
Maize root and cucurbit stem
Option D is correct because both maize root and cucurbit stem possess a well-developed pith, which is a central region of parenchyma cells.
27
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Remembering
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Interfascicular cambium is a
View answer and explanation
Correct option: D
Secondary Meristematic tissue
Option D (Secondary Meristematic tissue) is correct because interfascicular cambium develops from differentiated parenchyma cells, making it a secondary meristem.
28
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Primary function of epidermis is
View answer and explanation
Correct option: B
Protection
Option B (Protection) is correct because the epidermis acts as a protective layer for the plant, preventing water loss and pathogen entry.
29
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Understanding
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The age of tree can’t be determined by annual rings if the tree belongs to the
View answer and explanation
Correct option: D
Tropical forest
Option D (Tropical forest) is correct because trees in tropical forests often do not experience distinct seasonal changes, making annual ring formation less consistent or absent.
30
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Cells in the meristematic phase of growth shows/have
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Correct option: A
Large nucleus
Option A is correct because cells in the meristematic phase typically have a large nucleus.
Revision notes and key takeaways
Review ANATOMY OF FLOWERING PLANTS in your textbook or class notes, then use this set to check your understanding.
Key Takeaways
- ✓ This set contains 128 single-correct-answer MCQs on ANATOMY OF FLOWERING PLANTS.
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