NEET Biology Anatomy Of Flowering Plants MCQs Set A

Question: Transport of food material in higher plants takes place through

• a) Sieve elements
• b) Tracheids
• c) Transfusion tissue
• d) Companion cells

Answer: Sieve elements

Question: Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

• a) Position of protoxylem
• b) Absence of secondary phloem
• c) Presence of cortex
• d) Absence of secondary xylem

Answer: Position of protoxylem

Question: The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is

• a) Maturing
• b) Differentiating
• c) Widening
• d) Elongating

Answer: Maturing

Question: Palisade parenchyma is absent in leaves of

• a) Sorghum
• b) Gram
• c) Soybean
• d) Mustard

Answer: Sorghum

Question: In barley stem, vascular, bundles are

• a) Closed and scattered
• b) Closed and radial
• c) Open and in a ring
• d) Open and scattered

Answer: Closed and scattered

Question: Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of

• a) Hydrophytes
• b) Mesophytes
• c) Xerophytes
• d) Epiphytes

Answer: Mesophytes

Question: Vascular tissues in flowering plants develop from

• a) Plerome
• b) Periblem
• c) Phellogen
• d) Dermatogen

Answer: Plerome

Question:   The length of different internodes in a culm of sugarcane is variable because of

• a) Intercalary meristem
• b) Shoot apical meristem
• c) Position of axillary buds
• d) Size of leaf lamina at the node below each internode

Answer: Intercalary meristem

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

• a) Teak and pine
• b) Wheat and maiden hair fern
• c) Sugarcane and sunflower
• d) Deodar and fern

Answer: Teak and pine

Question: Passage cells are thin- walled cells found in

• a) Endodermis of roots facilitating rapid transport of water from cortex to pericycle.
• b) Central region of style through which the pollen tube grows towards the ovary
• c) Phloem elements that serve as entry points for substances for transport to other plant parts
• d) Testa of seed to enable emergence of growing embryonic axis during seed germination

Answer:  Endodermis of roots facilitating rapid transport of water from cortex to pericycle.

Question: A common structural feature of vessel elements and sieve tube elements is

• a) Enucleate condition
• b) Pores on lateral walls
• c) Thick secondary walls
• d) Presence of P-protein

Answer: Enucleate condition

Question: In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues?

• a) Flowers, fruits and leaves
• b) All parts
• c) Stem and root
• d) Shoot tips and root tips

Answer: Flowers, fruits and leaves

Question:  Meristematic tissue responsible for increase in girth of tree trunk is

• a) Lateral meristem
• b) Phellogen
• c) Intercalary meristem
• d) Apical meristem

Answer: Lateral meristem

Question: Axillary bud and terminal bud are derived from the activity of

• a) Apical meristem
• b) Parenchyma
• c) Intercalary meristem
• d) Lateral meristem

Answer: Apical meristem

Question: Procambium is situated just behind apical meristem. Procambium gives rise to

• a) Both
• b) Fascicular cambium
• c) Primary vascular bundle
• d) None of these

Answer: Both

Question: The cells of the quiescent centre are characterised by

• a) Having light cytoplasm and small nuclei
• b) Having dense cytoplasm and prominent nuclei
• c) Dividing regularly to add to the corpus
• d) Dividing regularly to add to tunica

Answer: Having light cytoplasm and small nuclei

Question: The apical meristem of the root is present

• a) In all the roots
• b) Only in tap roots
• c) Only in radicals
• d) Only in adventitious roots

Answer: In all the roots

Question:   Which of the following is not true about ‘sclereids’?

• a) These are groups of living cells
• b) These are also called stone cells
• c) These are found in nut shells, guava pulp, pear
• d) These are form of sclerenchyma

Answer: These are groups of living cells

Question: Chlorenchyma is known to develop in the

• a) Capsule of a moss
• b) Cytoplasm of Chlorella
• c) Mycelium of a green mould such as Aspergillus
• d) Pollen tube of Pinus

Answer: Capsule of a moss

Question: Vessels are found in

• a) Most of angiosperms and few gymnosperms
• b) All angiosperms and some gymnosperm
• c) All angiosperms, all gymnosperms and some pteridophyta
• d) All pteridophyta

Answer: Most of angiosperms and few gymnosperms

More Questions.........................................

Question: Casparian strip occurs in

• a) Endodermis
• b) Exodermis
• c) Pericycle
• d) Epidermis

Answer:  Endodermis

Question: Vascular bundles in monocotyledons are considered closed because

• a) There is no secondary growth
• b) There are no vessels with perforations
• c) Xylem is surrounded all around by phloem
• d) A bundle sheath surrounds each bundle

Answer: There is no secondary growth

Question: At maturity, which of the following is non-nucleated?

• a) Sieve cell
• b) Companion cell
• c) Cortical cell
• d) Palisade cell

Answer: Sieve cell

Question: What happens in plants during vascularisation?

• a) Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously
• b) Differentiation of procambium, formation of primary phloem followed by formation of primary xylem
• c) Formation of procambium, secondary phloem and xylem simultaneously
• d) Differentiation of procambium followed by the formation of secondary xylem

Answer: Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously

Question: Which of the following statement is true?

• a) Tracheids are unicellular with wide lumen
• b) Tracheids are multicellular with narrow lumen
• c) Vessels are multicellular with narrow lumen
• d) Vessels are unicellular with narrow lumen

Answer: Tracheids are unicellular with wide lumen

Question: Four radial vascular bundles are found in

• a) Dicot root
• b) Monocot root
• c) Dicot stem
• d) Monocot stem

Answer: Dicot root

Question: In which of the following plant sunken stomata are found?

• a) Nerium
• b) Hydrilla
• c) Mango

Answer: Nerium

Question: Gymnosperms are also called soft wood spermatophytes because they lack

• a) Xylem fibres
• b) Thick-walled tracheids
• c) Cambium
• d) Phloem fibres

Answer: Xylem fibres

Question: In an annual ring, the light coloured part is known as

• a) Early wood
• b) Late wood
• c) Heartwood
• d) Sapwood

Answer: Early wood

Question: As a tree grows older, which of the following increases more rapidly in thickness?

• a) Heart wood
• b) Sap wood
• c) Phloem
• d) Cortex

Answer: Heart wood

Question: All given tissues are formed as a result of redifferentiation process, except

• a) Interfascicular cambium
• b) Phelloderm
• c) Phellem
• d) Secondary xylem

Answer: Interfascicular cambium

Question: Vascular cambium of dicot root is purely secondary in origin and arise from

• a) More than one option is correct
• b) Cells of pericycle just outside protoxylem
• c) Cells of conjuctive parenchyma just below phloem
• d) Cells of parenchyma between xylem and phloem

Answer: More than one option is correct

Question: Select wrong statement regarding secondary phloem

• a) Arise due to activity of procambium
• b) No distinction between protophloem and metaphloem
• c) Occurs during secondary growth
• d) Secondary permanent tissue

Answer: Arise due to activity of procambium

Question: Vascular bundles in dicot leaves are

• a) Scattered, conjoint, collateral, closed
• b) Ringed, conjoint, collateral, closed
• c) Scattered, conjoint, collateral, open
• d) Scattered, conjoint, collateral, open

Answer: Scattered, conjoint, collateral, closed

Question:  Lenticles are formed due to rupture in epidermis because of pressure exerted by

• a) Complementary cells
• b) Epithem cells
• c) Tyloses
• d) Phellem

Answer: Complementary cells

Question: Vascular bundles in monocotyledons are considered closed because

• a) Cambium is absent
• b) Xylem is surrounded all around by phloem
• c) A bundle sheath surrounds each bundle
• d) There are no vessels with perforations

Answer: Cambium is absent

Question: A major characteristic of the monocot root is the presence of

• a) Vasculature without cambium
• b) Cambium sandwiched between phloem and xylem along the radius
• c) Scattered vascular bundles
• d) Open vascular bundles

Answer:  Vasculature without cambium

Question: You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?

• a) Protoxylem
• b) Cortical cells
• c) Secondary phloem
• d) Secondary xylem

Answer: Protoxylem

Question: Tracheids differ from other tracheary elements in

• a) Being imperforate
• b) Being lignified
• c) Having casparian strips
• d) Lacking nucleus

Answer: Being imperforate

Question:  Age of a tree can be estimated by

• a) Number of annual rings
• b) Its height and girth
• c) Biomass
• d) Diameter of its heartwood

Answer: Number of annual rings

Question: Interfascicular cambium develops from the cells of

• a) Medullary rays
• b) Pericycle
• c) Endodermis
• d) Xylem parenchyma

Answer: Medullary rays

Question: Water containing cavities in vascular bundles are found in

• a) Maize
• b) Sunflower
• c) Pinus
• d) Cycas

Answer:   Maize

Question: Closed vascular bundles lack

• a) Cambium
• b) Pith
• c) Ground tissue
• d) Conjunctive tissue

Answer: Cambium

Question: Companion cells are closely associated with

• a) Sieve elements
• b) Vessel elements
• c) Guard cells
• d) Trichomes

Answer: Sieve elements

Question: The common bottle cork is a product of

• a) Phellogen
• b) Dermatogen
• c) Vascular cambium
• d) Xylem

Answer: Phellogen

Question: As compared to a dicot root, a monocot root has

• a) Many xylem bundles
• b) Relatively thicker periderm
• c) Inconspicuous annual rings
• d) More abundant secondary xylem

Answer:  Many xylem bundles

Question: Function of companion cells is

• a) Loading of sucrose into sieve elements
• b) Loading of sucrose into sieve elements by passive transport
• c) Providing energy to sieve elements for active transport
• d) Providing water to phloem

Answer: Loading of sucrose into sieve elements

Question: Ground tissue includes 

• a) All tissues except epidermis and vascular bundles
• b) All tissues external to endodermis
• c) All tissues internal to endodermis
• d) Epidermis and cortex

Answer: All tissues except epidermis and vascular bundles

Question: In land plants, the guard cells differ from other epidermal cells in having

• a) Chloroplasts
• b) Cytoskeleton
• c) Mitochondria
• d) Endoplasmic reticulum

Answer: Chloroplasts

Question: The cork cambium, cork and secondary cortex are collectively called

• a) Periderm
• b) Phellogen
• c) Phelloderm
• d) Phellem

Answer: Periderm

Question:

• a) Puccinia - Smut
• b) Cassia - Imbricate aestivation
• c) Root pressure - Guttation
• d) Root - Exarch protoxylem

Answer: Puccinia - Smut

Question: Some vascular bundles are described as open because these

• a) Are capable of producing secondary xylem and phloem
• b) Are surrounded by pericycle but no endodermis
• c) Are not surrounded by pericycle
• d) Possess conjunctive tissue between xylem and phloem

Answer:  Are capable of producing secondary xylem and phloem

Question: The chief water conducting elements of xylem in gymnosperms are

• a) Tracheids
• b) Vessels
• c) Fibers
• d) Transfusion tissue

Answer: Tracheids

Question: Which one of the following is not a lateral meristem?

• a) Intercalary meristem
• b) Interfascicular cambium
• c) Intrafascicular cambium
• d) Phellogen

Answer: Intercalary meristem

Question: Heartwood differs from sapwood in

• a) Having dead and non-conducting elements
• b) Presence of rays and fibres
• c) Being susceptible to pests and pathogens
• d) Absence of vessels and parenchyma

Answer:  Having dead and non-conducting elements

Question: Select correct features w.r.t. trichomes in shoot system

(a) Usually unicelled
(b) Branched or unbranched
(c) May be secretory
(d) Soft or stiff
(e) Helps against transpiration

• a) All except ‘a
• b) a, c and e
• c) All except ‘c’ and ‘d’
• d) a, b, d and e

Answer: All except ‘a

Question: Pericycle of the roots is never sclerenchymatous because it

• a) Is the place of origin of root branches
• b) Does not act as a mechanical tissue in roots
• c) Gives rise to root hairs
• d) Gives rise to root hairs (when the root is young), and to root branches (at maturity)

Answer: Is the place of origin of root branches

Question: Tissue commonly known as passport point or biological check post is characterised by

• a) Casparian bands and passage cells
• b) Bulliform cells and raphides
• c) Cystolith and motor cells
• d) Passage cells and Fats

Answer: Casparian bands and passage cells

Question: Seat of origin of lateral root and formation of cork cambium are features related to

• a) Pericycle
• b) Endodermis
• c) Hypodermis
• d) Pith rays

Answer:  Pericycle

Question: Centripetal and centrifugal xylem are the important features of

• a) Both
• b) Exarch and endarch respectively
• c) Root and stem respectively
• d) None of these

Answer: Both

Question: Members of Winteraceae, Tetracentraceae and Trochodendraceae

• a) More than one option is correct
• b) Do not have albuminous cells
• c) Do not have tracheids
• d) Do not have vessels

Answer: More than one option is correct

Question: Which of the following vascular bundles are always open?

• a) Bicollateral
• b) Concentric
• c) Collateral
• d) Radial

Answer: Bicollateral

Question:  The vascular bundles in the stems of most of dicots are conjoint, collateral and open. In each of these bundles

• a) Xylem and phloem are on the same radius with xylem situated towards the pith and phloem situated towards the pericycle and a strip of cambium separates the two
• b) Xylem completely surrounds the phloem on all sides but the two are separated by the cambium
• c) Phloem completely surrounds the xylem and a strip of cambium separates the two
• d) Xylem and phloem are on the same radius with phloem towards the pith and xylem towards the pericycle without a strip of cambium between them

Answer: Xylem and phloem are on the same radius with xylem situated towards the pith and phloem situated towards the pericycle and a strip of cambium separates the two

Question: Which is not true for monocot stem?

• a) Presence of water canals in pith
• b) Presence of bundle sheath
• c) Sclerenchymatous hypodermis
• d) Conjoint, collateral closed vascular bundles

Answer: Presence of water canals in pith

Question: Vascular bundles are conjoint, collateral, endarch and lack cambium between xylem and phloem in all, but not in

• a) Sunflower
• b) Wheat
• c) Barley
• d) Maize

Answer: Sunflower

Question: Monocot stem differs from dicot stem in having

• a) Polymorphic vascular bundles
• b) Collateral VB
• c) Endarch xylem element
• d) Well developed pith

Answer: Polymorphic vascular bundles

Question: Vascular cambium is a meristematic layer that cuts off

• a) Secondary xylem, secondary phloem and medullary rays
• b) Primary xylem and secondary xylem
• c) Xylem vessels and xylem tracheids
• d) Primary xylem and primary phloem

Answer: Secondary xylem, secondary phloem and medullary rays

Question: Derivatives of the secondary meristem in the steler region are

• a) Duramen and alburnum
• b) Phellem and phelloderm
• c) Alburnum and primary phloem
• d) Primary xylem and secondary phloem

Answer:  Duramen and alburnum

Question: What is the position of oldest secondary phloem?

• a) Just below the pericycle
• b) Just outside the pericycle
• c) Below the vascular cambium
• d) Just outside the vascular cambium

Answer: Just below the pericycle

Question: The youngest layer of secondary xylem in the wood of dicot plant is located

• a) Just inside vascular cambium
• b) Between pith and primary xylem
• c) Just outside vascular cambium
• d) Just inside cork cambium

Answer: Just inside vascular cambium

Question: 

A. Heart wood is durable, dark and central in position.
B. Tyloses are balloon like structures of xylem parenchyma in vessel lumen.
C. Late wood is formed during spring season.

• a) Only C is incorrect
• b) Only B is incorrect
• c) Only A is correct
• d) All are correct

Answer: Only C is incorrect

Question: Secondary growth in extrasteler region is due to activity of

• a) Cork cambium
• b) Interfascicular cambium
• c) Intrafascicular cambium
• d) Intercalary meristem

Answer: Cork cambium

Question: Seasonal activity of vascular cambium is influenced by many factors, except

• a) Leaf orientation
• b) Relative humidity and temperature
• c) Geographical location of plant
• d) Photoperiod and water supply

Answer: Leaf orientation

Question: When secondary growth is initiated in dicot stem, what will happen first?

• a) Parenchymatous cells present between vascular bundles become meristematic
• b) Interfascicular cambium join with intrafascicular cambium
• c) The cells of cambium divide periclinally to form xylem mother cells
• d) Pith get obliterated

Answer: Parenchymatous cells present between vascular bundles become meristematic