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Assignment for Class 11 Biology Chapter 6 Anatomy Of Flowering Plants
Class 11 Biology students should refer to the following printable assignment in Pdf for Chapter 6 Anatomy Of Flowering Plants in Class 11. This test paper with questions and answers for Class 11 Biology will be very useful for exams and help you to score good marks
Chapter 6 Anatomy Of Flowering Plants Class 11 Biology Assignment
Question. Stomata in grass leaf are
(a) dumb-bell shaped
(b) kidney-shaped
(c) rectangular
(d) barrel-shaped.
Answer. A
Question. Specialised epidermal cells surrounding the guard cells are called
(a) bulliform cells
(b) lenticels
(c) complementary cells
(d) subsidiary cells.
Answer. D
Question. Vascular bundles in monocotyledons are considered closed because
(a) there are no vessels with perforations
(b) xylem is surrounded all around by phloem
(c) a bundle sheath surrounds each bundle
(d) cambium is absent.
Answer. D
Question. Which of the following statements is not true for stomatal apparatus?
(a) Guard cells invariably possess chloroplasts and mitochondria.
(b) Guard cells are always surrounded by subsidiary cells.
(c) Stomata are involved in gaseous exchange.
(d) Inner wall of guard cells are thick.
Answer. B
Question. Closed vascular bundles lack
(a) ground tissue
(b) conjunctive tissue
(c) cambium
(d) pith.
Answer. C
Question. Ground tissue includes
(a) all tissues external to endodermis
(b) all tissues except epidermis and vascular bundles
(c) epidermis and cortex
(d) all tissues internal to endodermis.
Answer. B
Question. Some vascular bundles are described as open because these
(a) are surrounded by pericycle but no endodermis
(b) are capable of producing secondary xylem and phloem
(c) possess conjunctive tissue between xylem and phloem
(d) are not surrounded by pericycle.
Answer. B
Question. In barley stem vascular bundles are
(a) closed and scattered
(b) open and in a ring
(c) closed and radial
(d) open and scattered.
Answer. A
Question. A bicollateral vascular bundle is characterised by
(a) phloem being sandwiched between xylem
(b) transverse splitting of vascular bundle
(c) longitudinal splitting of vascular bundle
(d) xylem being sandwiched between phloem.
Answer. D
Question. The transverse section of a plant shows following anatomical features :
(i) Large number of scattered vascular bundles surrounded by bundle sheath
(ii) Large conspicuous parenchymatous ground tissue
(iii) vascular bundles conjoint and closed
(iv) phloem parenchyma absent
Identify the category of plant and its part.
(a) Monocotyledonous stem
(b) Monocotyledonous root
(c) Dicotyledonous stem
(d) Dicotyledonous root
Answer. A
Question. Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following.
(a) Tyloses in vessels
(b) Closure of stomata
(c) Flaccidity of bulliform cells
(d) Shrinkage of air spaces in spongy mesophyll
Answer. C
Question. In the dicot root the vascular cambium originates from
(a) tissue located below the phloem bundles and a portion of pericycle tissue above protoxylem
(b) cortical region
(c) parenchyma between endodermis and pericycle
(d) intrafascicular and interfascicular tissue in a ring.
Answer. A
Question. Casparian strips occur in
(a) epidermis
(b) pericycle
(c) cortex
(d) endodermis.
Answer. D
Question. Root hair develop from the region of
(a) elongation
(b) root cap
(c) meristematic activity
(d) maturation.
Answer. D
Question. Cortex is the region found between
(a) epidermis and stele
(b) pericycle and endodermis
(c) endodermis and pith
(d) endodermis and vascular bundle.
Answer. A
Question. A major characteristic of monocot root is the presence of
(a) vasculature without cambium
(b) cambium sandwiched between phloem and xylem along the radius
(c) open vascular bundles
(d) scattered vascular bundles.
Answer. A
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) Secondary xylem
(b) Secondary phloem
(c) Protoxylem
(d) Cortical cells
Answer. C
Question. Water containing cavities in vascular bundles are found in
(a) sunflower
(b) maize
(c) Cycas
(d) Pinus.
Answer. B
Question. As compared to a dicot root, a monocot root has
(a) more abundant secondary xylem
(b) many xylem bundles
(c) inconspicuous annual rings
(d) relatively thicker periderm.
Answer. B
Question. Palisade parenchyma is absent in leaves of
(a) mustard
(b) soybean
(c) gram
(d) Sorghum.
Answer. D
Question. The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is
(a) elongating
(b) widening
(c) differentiating
(d) maturing.
Answer. C
Question. Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
(a) absence of secondary phloem
(b) presence of cortex
(c) position of protoxylem
(d) absence of secondary xylem.
Answer. C
Question. Passage cells are thin walled cells found in
(a) phloem elements that serve as entry points for substance for transport to other plant parts
(b) testa of seeds to enable emergence of growing embryonic axis during seed germination
(c) central region of style through which the pollen tube grows towards the ovary
(d) endodermis of roots facilitating rapid transpor of water from cortex to pericycle.
Answer. D
Question. In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissues?
(a) All parts
(b) Stem and root
(c) Flowers, fruits and leaves
(d) Shoot tips and root tips
Answer. D
Question. Four radial vascular bundle are found in
(a) dicot root
(b) monocot root
(c) dicot stem
(d) monocot stem.
Answer. A
Question. What happens in plants during vascularisation?
(a) Differentiation of procambium, formation of primary phloem followed by formation of primary xylem
(b) Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously
(c) Formation of procambium, primary phloem and xylem simultaneously
(d) Differentiation of procambium followed by the formation of secondary xylem
Answer. B
Question. Casparian strips are found in
(a) epidermis
(b) hypodermis
(c) periderm
(d) endodermis.
Answer. D
Question. Casparian strip occurs in a
(a) endodermis
(b) exodermis
(c) pericycle
(d) epidermis.
Answer. A
Question. A plant bears fruit, has a column of vascular tissue and a tap root system. This plant is a
(a) angiosperm and dicot
(b) gymnosperm and dicot
(c) angiosperm and monocot
(d) gymnosperm and monocot.
Answer. A
Question. Where do the Casparian bands occur?
(a) Epidermis
(b) Endodermis
(c) Pericycle
(d) Phloem
Answer. B
Question. A narrow layer of thin walled cells found between phloem/bark and wood of a dicot is
(a) cork cambium
(b) vascular cambium
(c) endodermis
(d) pericycle.
Answer. B
Question. The aleurone layer in maize grain is specially rich in
(a) proteins
(b) starch
(c) lipids
(d) auxins.
Answer.A
Question. Chlorenchyma is known to develop in the
(a) cytoplasm of Chlorella
(b) mycelium of a green mould such as Aspergillus
(c) spore capsule of a moss
(d) pollen tube of Pinus.
Answer.C
Question. Diffuse porous woods are characteristic of plants growing in
(a) alpine region
(b) cold winter regions
(c) temperature climate
(d) tropics.
Answer.D
Question. The cells of the quiescent centre are characterised by
(a) having dense cytoplasm and prominent nuclei
(b) having light cytoplasm and small nuclei
(c) dividing regularly to add to the corpus
(d) dividing regularly to add to tunica.
Answer.B
Question. Which of the following statements is true?
(a) Vessels are multicellular with wide lumen.
(b) Tracheids are multicellular with narrow lumen.
(c) Vessels are unicellular with narrow lumen.
(d) Tracheids are unicellular with wide lumen.
Answer.D
Question. Axillary bud and terminal bud derived from the activity of
(a) lateral meristem
(b) intercalary meristem
(c) apical meristem
(d) parenchyma.
Answer.C
Question. Four radial vascular bundle are found in
(a) dicot root
(b) monocot root
(c) dicot stem
(d) monocot stem.
Answer.A
Question. Vessels are found in
(a) all angiosperms and some gymnosperm
(b) most of angiosperms and few gymnosperms
(c) all angiosperms, all gymnosperms and some pteridophyta
(d) all pteridophyta.
Answer.B
Question. In plants inulin and pectin are
(a) reserved material
(b) wastes
(c) excretory material
(d) insect attracting material.
Answer.A
Question. What happens in plants during vascularisation?
(a) Differentiation of procambium, formation of primary phloem followed by formation of primary xylem
(b) Differentiation of procambium followed by the formation of primary phloem and xylem simultaneously
(c) Formation of procambium, primary phloem and xylem simultaneously
(d) Differentiation of procambium followed by the formation of secondary xylem
Answer.B
Question. Casparian strips are found in
(a) epidermis
(b) hypodermis
(c) periderm
(d) endodermis.
Answer.D
Question. Which of the following meristems is responsible for extrastelar secondary growth in dicotyledonous stem?
(a) Interfascicular cambium
(b) Intercalary meristem
(c) Phellogen
(d) Intrafascicular cambium
Answer.C
Question. The periderm includes
(a) secondary phloem
(b) cork
(c) cambium
(d) all of these.
Answer.B
Question. At maturity, which of the following is nonnucleated?
(a) Palisade cell
(b) Cortical cell
(c) Sieve cell
(d) Companion cell
Answer.C
Question. Which of the following is not true about ‘sclereids’?
(a) These are groups of living cells.
(b) These are found in nut shells, guava pulp, pear.
(c) These are also called stone cells.
(d) These are form of sclerenchyma with fibres.
Answer.A
Question. Casparian strip occurs in a
(a) endodermis
(b) exodermis
(c) pericycle
(d) epidermis.
Answer.A
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.A
Question. Where do the casparian bands occur?
(a) Epidermis
(b) Endodermis
(c) Pericycle
(d) Phloem
Answer.B
Question. Which of the following plant cells will show totipotency?
(a) Sieve tubes
(b) Xylem vessels
(c) Meristem
(d) Cork cells
Answer.C
Question. Periderm is produced by
(a) vascular cambium
(b) fascicular cambium
(c) phellogen
(d) intrafascicular cambium.
Answer.C
Question. A narrow layer of thin walled cells found between phloem/bark and wood of a dicot is
(a) cork cambium
(b) vascular cambium
(c) endodermis
(d) pericycle.
Answer.B
Question. Which exposed wood will decay faster?
(a) Sapwood
(b) Softwood
(c) Wood with lot of fibres
(d) Heartwood
Answer.A
Question. Abnormal/anomalous secondary growth occurs in
(a) Dracaena
(b) ginger
(c) wheat
(d) sunflower.
Answer.A
Question. Bordered pits are found in
(a) sieve cells
(b) vessel wall
(c) companion cells
(d) sieve tube wall.
Answer.B
Question. A bicollateral vascular bundle is characterised by
(a) phloem being sandwitched between xylem
(b) transverse splitting of vascular bundle
(c) longitudinal splitting of vascular bundle
(d) xylem being sandwitched between phloem.
Answer.D
Question. Vascular cambium produces
(a) primary xylem and primary phloem
(b) secondary xylem and secondary phloem
(c) primary xylem and secondary phloem
(d) secondary xylem and primary phloem.
Answer.B
Question. What is true about a monocot leaf?
(a) Reticulate venation
(b) Absence of bulliform cells from epidermis
(c) Mesophyll not differentiated into palisade and spongy tissues
(d) Well differentiated mesophyll
Answer.C
Question. Which is correct about transport of conduction of substances?
(a) Organic food moves up through phloem
(b) Organic food moves up through xylem
(c) Inorganic food moves upwardly and downwardly through xylem
(d) Organic food moves upwardly and downwardly through phloem
Answer.D
Question. An organised and differentiated cellular structure having cytoplasm but no nucleus is
(a) vessels
(b) xylem parenchyma
(c) sieve tubes
(d) tracheids.
Answer.C
Question. Angular collenchyma occurs in
(a) Cucurbita
(b) Helianthus
(c) Althaea
(d) Salvia.
Answer.A
Question. For union between stock and scion in grafting which one is the first to occur
(a) formation of callus
(b) production of plasmodesmata
(c) differentiation of new vascular tissues
(d) regeneration of cortex and epidermis.
Answer.A
Question. Pericycle of roots produces
(a) mechanical support
(b) lateral roots
(c) vascular bundles
(d) adventitious buds.
Answer.B
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