CBSE Questions for Class 11 Medical Biology Anatomy Of Flowering Plants Quiz 10 - MCQExams.com

Tracheary elements of protoxylem are
  • Larger and broader
  • Formed towards the end
  • With advanced type of thickenings
  • Short narrow with primitive type of thickenings
A tissue is a grouping of cells similar in
  • Function
  • Structure
  • Heredity
  • Origin and function
Tylosis is intrusion of parenchyma into ______________.
  • Sieve tube
  • Resin duct
  • Vessel
  • All of the above
Vascular cambium cuts off both xylem and phloem on the inner side in ____________.
  • Ficus
  • Entada
  • Orobanche
  • Quercus
Which of the following layer of cells are present just outside the vascular cambium?
  • Oldest secondary xylem
  • Youngest secondary phloem
  • Primary phloem
  • Youngest secondary xylem
In Quercus, phellogen develops from
  • Epidermis
  • Hypodermis
  • Outer cortex
  • Pericycle
Phellogen arises from
  • An outer layer of cortex
  • Epidermis
  • Phloem
  • All of the above
Which is not true regarding sclereids?
  • Found in shells of nuts, pulp of Guava and Pea
  • Also known as stone cells
  • Constituent of sclerenchyma
  • Group of living cells
Lignin occurs in
  • Companion cells
  • Sieve tube
  • Collenchyma
  • Tracheids
Which is least differentiated?
  • Simple tissues
  • Parenchyma
  • Circulatory tissues
  • Complex tissues
Given below are assertion and reason. Point out if both are true with reason being correct explanation (A), both true but reason is not correct explanation (B), assertion true but reason wrong (C), and both wrong (D),
Assertion. Vascular cambium is considered as lateral meristem.
Reason. It gives rise to lateral shoots.
  • A
  • B
  • C
  • D
Which of the following has perforated wall?
  • Tracheid
  • Vessel
  • Fibre
  • Sclereid
Match items of column I and column II
Column IColumn II
aCollateral and openpCucurbita stem
bRadialqFern
cBicollateralrMaize Root
dConcentricsSunflower
tMaize stem
  • a-t, b-s c-r, d-p
  • a-s, b-r c-p, d-q
  • a-s, b-p c-r, d-q
  • a-s, b-r c-q, d-p
Tracheids, tracheae, wood fibres and wood parenchyma occur in
  • Xylem
  • Cortex
  • Vascular strand
  • Phloem
Conducting component of xylem are
  • Sieve elements
  • Companion elements
  • Tracheary elements
  • All the above
The similarity between sclerenchyma and collenchyma is that both helps in:
  • Transport of materials
  • Conduction of water and minerals
  • Providing buoyancy
  • Providing support
Vascular bundle having cambium is
  • Open
  • Closed
  • Collateral
  • Conjoint
Match and find the correct option
III
(a)Tracheids(i)Cells possess highly thickened walls with oblilateral central lumen
(b)Vessels(ii)Elongated tube like cells with thick lignified walls and tapering ends
(c)Xylem parenchyma(iii)Individual members are interconnected through perforations in their common walls
(d)Xylem fibres(iv)Cells are living with thin cellulose cell wall.
  • a-ii, b-iii, c-iv, d-i
  • a-ii, b-iv, c-i, d-iii
  • a-iii, b-ii, c-iv, d-i
  • a-ii, b-iii, c-i, d-iv.
Which ones are sister cells
  • Tracheids and vessels
  • Xylem parenchyma and xylem fibres
  • Sieve tube cells and companion cells
  • Phloem parenchyma and companion
The following diagrams show the types of secondary thickening in the xylem vessels. Identify the types labelled from a to f. Choose the correct option from those given.
659227_a4274758da954d09bc0259320d803586.JPG
  • a = Annular, b = Spiral, c = Scalariform, d = Reticulate, e = Pitted, simple, f = Pitted with border.
  • a = Spiral, b = Annular, c = Scalariform, d = Reticulate e = Pitted with border, f = Pitted, simple
  • a = Spiral, b = Annular, c = Reticulate, d = Scalariform, e = Pitted with border, f = Pitted, simple
  • a = Annular, b = Spiral, c = Scalariform, d = Reticulate e = Pitted with border, f = Pitted, simple
Which of the following statements is not correct about sclerenchyma?
  • Sclerenchyma fibres associated with xylem tissue are called wood fibres
  • Sclerenchyma fibres associated with phloem tissue are called bast fibres
  • Endocarp of coconut is rich is sclerenchyma fibres
  • Brachysclereids are isodiametric and polygonal
Choose the correct options
(a) Thread-like cytoplasmic strands, running from one cell to other are known as plasmodesmata
(b) Xylem and phloem constitute the vascular bundle of the stem
(c) First formed xylem elements are described as metaxylem
(d) Radial bundles are mainly found in leaves.
  • a, b true c, d wrong
  • d true a, b, c wrong
  • c true a, b, d wrong
  • b true a, c, d wrong
  • a true b, c, d wrong
Match the columns
Column IColumn II
aXylem vessels
1.Store food material
bXylem tracheids2.Obliterated lumen
cXylem fibre3.Perforated plates
dXylem parenchyma4.Chisel-like ends
  • a-3, b-4, c-2, d-1
  • a-4, b-3, c-2, d-1
  • a-3, b-2, c-1, d-4
  • a-2, b-1, c-4, d-3
  • a-1, b-2, c-3, d-4
Which of the following statements is true?
  • Collenchyma occurs in layers below epidermis in monocot plants
  • Xylem parenchyma cells are living, thin walled and lignified
  • Sclerenchyma cells are usually dead and without protoplasts
  • Companion cells are specialised sclerenchyma cells
  • Phloem fibres are generally present in primary phloem
Collocytes which provide mechanical strength to plants occur in
  • Dicotyledonous root
  • Dicotyledonous stem
  • Monocotyledonous root
  • Monocotyledonous stem
Sclereids found in seed coat of pulses are
  • Macrosclereids
  • Brachysclereids
  • Osteosclereids
  • Asterosclereids
Heaping of earth around base of stem in Potato is meant for
  • Preventing exposure of roots
  • Providing extra support to delicate stem
  • Inducing development of more auxiliary shoots
  • Making more water available
What is the eye of potato ?
  • Axillary bud
  • Accessory bud
  • Adventitious bud
  • Apical bud
In the transverse section of a dicot root.
  • The protoxylem vessels are present towards the periphery and metaxylem vessels are present towards the centre
  • The protoxylem vessels are present towards the centre and metaxylem vessels are present towards the periphery
  • Protoxylem is completely surrounded by the metaxylem vessels
  • Metaxylem is completely surrounded by protoxylem
Arrangement of vascular bundles in a dicot root is
  • Collateral.
  • Radial.
  • Bicollateral.
  • Conjoint.
Identify the contraceptive device shown below and identify its implantation site.Select the correct option:
Contraceptive deviceSite of implantation
1Lippes LoopUterine wall
2LNG-20Fallopian tube
3Multiload 375Uterine wall
4ImplantsSubcutanceous
  • 1,2,3
  • 2,3,4
  • 1,3,4
  • only 4
Which of the following is true?
  • Vessels are unicellular and with narrow lumen
  • Vessels are unicellular and with wide lumen
  • Tracheids are unicellular and with wide lumen
  • Tracheids are unicellular and with narrow lumen
According to histogen theory, the meristematic zone responsible for the development of pericycle is?
  • Periblem
  • Plerome
  • Dermatogen
  • Calyptorogen
Plants growing at the equator are characterized by the absence of _______________.
  • Secondary growth
  • Heart and sap wood
  • Annual rings
  • Soft wood
A concentric vascular bundle that has the phloem surrounding the xylem is called.
  • Closed
  • Amphivasal
  • Amphicribal
  • Radial
Which of the following can be considered as dead mechanical tissue?
  • Aerenchyma
  • Collenchyma
  • Parenchyma
  • Sclerenchyma
The patches of thin-walled parenchyma extending from pith to cortex and lying between the vascular bundles are called.
  • Resin canals
  • Oil ducts
  • Medullary rays
  • Phloem
Consider the following families.
a. Orchidaceae
b. Potostmaceae
c. Trapaceae
In which of these the endosperm, a nutritive tissue, is NOT formed?
  • $$1$$ only
  • $$2$$ only
  • $$2$$ and $$3$$
  • $$1, 2$$ and $$3$$
The shoot branching depends upon the development of axillary buds, but many of the buds in axillary position never grow out due to the _____________________.
  • Inhibitory factor present in the axillary bud
  • Inhibitory factor present in the apical bud
  • Interaction of factors present in both the axillary & apical bud
  • Inhibition under genetic control
The water cavity in the xylem of maize stem is?
  • Schizolysigenously formed from protoxylem
  • Lysigenously formed from protoxylem
  • Schizogenously formed from metaxylem
  • Lysigneously formed from metaxylem
A tracheid is distinguished from a vessel elements on the basis of?
  • Length
  • Thickness
  • Side-wall pitting
  • End-wall perforation
Phellogen and phellem respectively denotes-
  • Cork and cork cambium
  • Cork cambium and cork
  • Secondary cortex and cork
  • Cork and secondary cortex
Conjunctive tissue is found in the mature stem of?
  • Mirabilas jalapa
  • Peperomia pellucida
  • Boerhaavia diffusa
  • Tinospora cordifolia
Consider the following statements about senescence and death.
a. In the case of formation of heartwood from sapwood, the xylem parenchyma first embark on the biosynthesis of an assemblage of secondary metabolites and develop tyloses into the adjacent treachery elements; they export most of their minerals nutrients to younger sapwood zone and finally die.
b. In the course of differentiation of xylem elements, specific regions of the primary walls are hydrolysed, the tonoplast then breaks down, followed by degradation of the cytoplasm membranes and the nucleus is one of the last constituents of the protoplast to die.
c. In the senescence of leaves it is commonly found that the chloroplasts are the last organelles to show clear evidence of death.
Of these statements.
  • $$1$$ and $$2$$ are correct
  • $$2$$ and $$3$$ are correct
  • $$1$$ and $$3$$ are correct
  • $$1, 2$$ and $$3$$ are correct
Well developed pith is found in ______________.
  • Monocot stem and dicot root
  • Monocot and dicot root
  • Dicot stem and dicot root
  • Dicot stem and monocot root
Members of Winteraceae, Tetracentraceae and trochodendraceae.
  • Do not have tracheids
  • Do not have albuminous cells
  • Do not have vessels
  • More than one option is correct
Which is the living component of xylem?
  • Tracheids
  • Xylem fibre
  • Xylem parenchyma
  • Trachea
Meristematic tissue which is found on apical part of root is called ______________.
  • Axillary bud
  • Lateral bud
  • Quiescent centre
  • None of these
Match List-I with List-II and select the correct answer.
List-I(Meristem)List-II(structure)
a. Apical Meristem$$1$$. Cambium
b. Lateral Meristem$$2$$. Internodes
c. Intercalary Meristem$$3$$. Root apex
d. Secondary Meristem$$4$$. Cork cambium
  • A-$$3$$, B-$$1$$, C-$$2$$, D-$$4$$
  • A-$$1$$, B-$$2$$, C-$$4$$, D-$$3$$
  • A-$$3$$, B-$$2$$, C-$$4$$, D-$$1$$
  • A-$$4$$, B-$$3$$, C-$$1$$, D-$$2$$
Choose the correct answer from the alternatives given.
The primary growth in plants results from:
  • primary cambium
  • cambium
  • promeristem
  • lateral meristems
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