CBSE Questions for Class 11 Medical Biology Anatomy Of Flowering Plants Quiz 9 - MCQExams.com

Growth$$/$$ annual rings are formed by the activity of
  • Cambium
  • Xylem
  • Phloem
  • Both xylem and phloem
Vascular bundles surrounded by sclerenchymatous sheath occur in
  • Monocot stem
  • Dicot stem and leaf
  • Monocot root
  • Dicot root
Fascicular cambium of dicot stems is?
  • Apical meristem
  • Primary meristem
  • Secondary meristem
  • Intercalary meristem
Two exarch vascular bundles occur in
  • Monocot root
  • Dicot root
  • Monocot stem
  • Dicot stem
Radial vascular bundles occur in
  • Stem
  • Monocot stem
  • Dicot stem
  • Root
In dicot stem, xylem is
  • Polyarch
  • Monoarch
  • Endarch
  • Exarch
Vascular cambium produces
  • Primary xylem and primary phloem
  • Secondary xylem and secondary phloem
  • Primary xylem and secondary phloem
  • Secondary xylem and primary phloem
Hypodermis in monocotyledonous stem is?
  • Parenchymatous
  • Chlorenchymatous
  • Collenchymatous
  • Sclerenchymatous
Bundle sheath is absent around vascular bundles of.
  • Dicot stem
  • Monocot stem
  • Dicot leaf
  • Monocot leaf
Vascular bundles of Cucurbita stem are
  • Collateral
  • Bicollateral
  • Radial
  • Concentric
Protoxylem lacunae occur in
  • Grass stem vascular bundles
  • Cladodes
  • Underground stems
  • Climbers
Secondary growth does not occur in monocots as their vascular bundles are
  • Radial
  • Scattered
  • Enclosed by sclerenchyma
  • Closed
Endodermis of dicot stem is also called
  • Bundle sheath
  • Starch sheath
  • Mesophyll
  • Water channel
Cork cambium is also called
  • Phelloderm
  • Phellem
  • Periderm
  • Phellogen
A component of xylem is
  • Sieve tube
  • Medullary ray
  • Sclereid
  • Tracheid
Undifferentiated ground tissue is present in stem of
  • Sunflower
  • Pisum
  • Maize
  • Cucurbita
Casparian strips contain
  • Cutin
  • Pectin
  • Suberin
  • Wax
Vascular bundles of a root are
  • Radial
  • Concentric
  • Collateral
  • Bicollateral
Which character is not associated with plant where Shull studied inbreeding depression while Miller and Letham extracted a hormone from its seeds?
  • Atactostele in stem
  • Bundle sheath in leaf
  • chromosome number $$30$$ in endosperm
  • Medulla absent in root
A common character of monocot and dicot roots is
  • Exarch protoxylem
  • Endarch xylem
  • Number of xylem strands
  • Occurrence of secondary growth
In dicot root, the outermost layer of tubular living cells is
  • Rhizodermis
  • Epidermis
  • Hypodermis
  • Exodermis
Casparian strips occur in
  • Longitudinal and radial walls of epidermal cells
  • Longitudinal walls of xylem
  • All walls of endodermis
  • Radial walls and tangential walls of endodermis
The elements of xylem tissue that store tannins are
  • Tracheids
  • Vessels
  • Xylem parenchyma
  • Xylem fibres
Lysigenous cavity occurs in
  • Stem of Helianthus
  • Root of Helianthus
  • Root of Zea mays
  • Stem of Zea mays
Correct sequence of layers from outside to inside of a typical monocot root is
  • Epiblema, endodermis, cortex, pericycle
  • Pericycle, cortex, endodermis, epiblema
  • Epiblema, cortex, endodermis, pericycle
  • Epiblema, pericycle, cortex, endodermis
In an annual ring, the light coloured part is
  • Heart wood
  • Sapwood
  • Early wood
  • Late wood
In the diagram of T.S. stele of dicot root, the different parts have been indicated by alphabets. Choose the correct combination.
656515_1c32fe9468f04f9f9612dee06db0c617.jpg
  • a- pericycle, b-conjunctive tissue, c-metaxylem, d-protoxylem, e-phloem, f-pith
  • a-endodermis, b-conjunctive tissue, c-protoxylem, d-metaxylem, e-phloem, f-pith
  • a-endodermis, b-conjunctive tissue, c-metaxylem, d-protoxylem, e-phloem, f-pith
  • a-endodermis, b-pith, c-protoxylem, d-metaxylem, e-phloem, f-conjunctive tissue
Transport proteins of endodermal cells are control points where a plant adjusts the quantity and types of solutes that reach the xylem. Root endodermis is able to actively transport ions in one direction only because of the layer of
  • Actin
  • Lignin
  • Suberin
  • Cellulose
Identify the correct pair of statements.
(i) Pericycle parenchymatous in dicot root but sclerenchymatous in mature monocot root
(ii) Pericycle of both dicot and monocot root produces lateral roots during secondary growth
(iii) All cells of dicot root endodermis are passage cells
(iv) Xylem is produced in centripetal manner in roots of fruit bearing plants.
  • (ii) and (iii)
  • (iii) and (iv)
  • (i) and (ii)
  • (i) and (iv)
Cambium is a lateral meristem, as it
  • Increases girth
  • Forms lateral branches
  • Lies on nodes
  • Increases length
Histogen is a
  • Promeristem derivative destined to produce specific areas
  • Intercalary meristem meant for forming specific tissue
  • Derivative of lateral meristem
  • Secondary meristem specialised to produce specific structures
Accessory cambia are
  • Intercalary meristems
  • Secondary meristems
  • Primary meristems
  • Partly primary and partly secondary meristem
Cortex is the region found between
  • Endodermis and vascular bundles
  • Epidermis and stele
  • Pericycle and endodermis
  • Endodermis and pith
Cambium produces growth in
  • Branches
  • Girth
  • Pith
  • Cortex
Select the characters which are not applicable to the anatomy of dicot roots: (a) Conjunctive tissue present (b) Presence of protein compound in casparian strips (c) Polyarch xylem bundles (d) Presence of pericycle
  • (a) and (b)
  • (b) and (d)
  • (c) and (d)
  • (a) and (d)
  • (b) and (c)
According to histogen theory, epidermis is formed by
  • Dermatogen
  • Protoderm
  • Periblem
  • Plerome
Vegetative shoot apex or stem apical meristem is
  • Conical
  • Broad
  • Broad and flat
  • Narrow
Tracheae occur in
  • Cambium
  • Ground tisuse
  • Xylem
  • Phloem
________ is an example of secondary meristem.
  • Xylem
  • Phloem
  • Phellem
  • Cork cambium
A collateral vascular bundle, is one in which xylem and phloem strands are present on the same radius with phloem towards
  • Outer side of the xylem
  • Inner side of the xylem
  • All around the xylem
  • On both sides of the xylem
Portion of apical meristem that gives rise to xylem tissue is called
  • Protoxylem
  • Procambium
  • Metaxylem
  • Tracheid
Which one is not formed from procambium?
  • Xylem
  • Phloem
  • Intrafascicular cambium
  • Interfascicular cambium
Vascular bundle having xylem and phloem on the same radius is
  • Concentric
  • Radial
  • Open
  • Collateral.
Tunica corpus theory is connected with
  • Root apex
  • Root cap
  • Shoot apex
  • Secondary growth
Lumen is minimum in
  • Sclerenchyma
  • Collenchyma
  • Parenchyma
  • Epidermis.
Stem of grasses and related plants elongate by the activity of
  • Lateral meristem
  • Apical stem
  • Both apical and intercalary meristem
  • Intercalary meristem
Leaf primordium grows by
  • Apical meristem
  • Intercalary meristem
  • Mass maristem
  • Both A and B
Stereome is a
  • Vascular tissue
  • Phloem
  • Collenchyma
  • Mechanical tissue
The cells forming phellogen are
  • Collenchymatous
  • Parenchymatous
  • Parenchymatous or collenchymatous
  • Recently divided cortical cells
A leptocentric or amphivasal vascular bundle has
  • Phloem flanked by xylem on interior and exterior sides only
  • Xylem flanked by phloem on interior and exterior sides only
  • Xylem surrounded by phloem
  • Phloem surrounded completely by xylem
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Practice Class 11 Medical Biology Quiz Questions and Answers