Find the statement that is NOT correct with regard to the structure of monocot stem.
Plant tissues and anatomy of root, stem, leaf
Every question from past board papers on Plant tissues and anatomy of root, stem, leaf, newest paper first. Open any question for its full worked answer.
NEET UG 2025 question paper (official, booklet 45)
Full paper →NEET UG 2024 question paper (official, booklet S6)
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Given below are two statements:
Statement I : Parenchyma is living but collenchyma is dead tissue.
Statement II : Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms.
In the light of the above statements, choose the correct answer from the options given below:
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Bulliform cells are responsible for
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In the given figure, which component has thin outer walls and highly thickened inner walls?
NEET UG 2023 question paper (official, booklet G6)
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Given below are two statements :
Statement I : Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body.
Statement II : Exarch condition is the most common feature of the root system.
In the light of the above statements, choose the correct answer from the options given below :
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Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : Late wood has fewer xylary elements with narrow vessels.
Reason R : Cambium is less active in winters.
In the light of the above statements, choose the correct answer from the options given below :
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Identify the correct statements :
A. Lenticels are the lens-shaped openings permitting the exchange of gases.
B. Bark formed early in the season is called hard bark.
C. Bark is a technical term that refers to all tissues exterior to vascular cambium.
D. Bark refers to periderm and secondary phloem.
E. Phellogen is single-layered in thickness.
Choose the correct answer from the options given below :
NEET UG 2022 question paper (official, booklet R6)
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Which of the following is not observed during apoplastic pathway ?
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Read the following statements about the vascular bundles :
(a) In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii.
(b) Conjoint closed vascular bundles do not possess cambium
(c) In open vascular bundles, cambium is present in between xylem and phloem
(d) The vascular bundles of dicotyledonous stem possess endarch protoxylem
(e) In monocotyledonous root, usually there are more than six xylem bundles present
Choose the correct answer from the options given below :
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In old trees the greater part of seco[...] dark brown and resistant to insect attack due [...]
(a) secretion of secondary metabolites and their deposition in the lumen of vessels.
(b) deposition of organic compounds like tannins and resins in the central layers of stem.
(c) deposition of suberin and aromatic substances in the outer layer of stem.
(d) deposition of tannins, gum, resin and aromatic substances in the peripheral layers of stem.
(e) presence of parenchyma cells, functionally active xylem elements and essential oils.
Choose the correct answer from the options given below :
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"Girdling Experiment" was performed by Plant Physiologists to identify the plant tissue through which :
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The anatomy of springwood shows some peculiar features. Identify the correct set of statements about springwood.
(a) It is also called as the earlywood
(b) In spring season cambium produces xylem elements with narrow vessels
(c) It is lighter in colour
(d) The springwood along with autumnwood shows alternate concentric rings forming annual rings
(e) It has lower density
Choose the correct answer from the options given below :
NEET UG 2021 question paper (official, booklet M4)
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Match List - I with List - II.
List - I | List - II
(a) Cells with active cell division capacity | (i) Vascular tissues
(b) Tissue having all cells similar in structure and function | (ii) Meristematic tissue
(c) Tissue having different types of cells | (iii) Sclereids
(d) Dead cells with highly thickened walls and narrow lumen | (iv) Simple tissue
Select the correct answer from the options given below.
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Match List - I with List - II.
List - I | List - II
(a) Lenticels | (i) Phellogen
(b) Cork cambium | (ii) Suberin deposition
(c) Secondary cortex | (iii) Exchange of gases
(d) Cork | (iv) Phelloderm
Choose the correct answer from the options given below.
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Select the correct pair.
NEET UG 2020 question paper (official, booklet E1)
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Identify the incorrect statement.
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The transverse section of a plant shows following anatomical features :
(a) Large number of scattered vascular bundles surrounded by bundle sheath.
(b) Large conspicuous parenchymatous ground tissue.
(c) Vascular bundles conjoint and closed.
(d) Phloem parenchyma absent.
Identify the category of plant and its part :
NEET UG 2019 question paper (official, booklet P1)
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Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following :
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Xylem translocates :
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Which of the statements given below is not true about formation of Annual Rings in trees ?
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Phloem in gymnosperms lacks :
NEET UG 2018 question paper (official, booklet EE)
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Plants having little or no secondary growth are
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Casparian strips occur in
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Secondary xylem and phloem in dicot stem are produced by
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Stomata in grass leaf are
NEET UG 2017 question paper (official, booklet B)
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Identify the wrong statement in context of heartwood :
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Which of the following facilitates opening of stomatal aperture ?
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The vascular cambium normally gives rise to :
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Which of the following is made up of dead cells ?
NEET UG 2016 Phase 1 question paper (official, booklet A)
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Specialised epidermal cells surrounding the guard cells are called :
NEET UG 2016 Phase 2 question paper (official, booklet ZZ)
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Cortex is the region found between
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The balloon-shaped structures called tyloses