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Neet Biology Anatomy Of Flowering Plants Mcq
Quiz 5
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Q.1
Quiescent centre in root meristem serves as ... .. [ AIIMS 2003]
0%
a) Site for storage of food which is utilized during maturation
0%
b) Reservoir of growth hormones
0%
c) Reserve for replenishment of damaged cells of the meristem
0%
d) Region of absorption of water
Explanation
Answer : (c)
Q.2
In cucurbits, hypodermis is formed of ... .. [ Har PMT 2001]
0%
a) Sclerenchyma
0%
b) Collenchyma
0%
c) Parenchyma
0%
d) Aerenchyma
Explanation
In cucurbits, Hypodermis was made up of 2 to 6 layers of collenchyma cells. Answer : (b)
Q.3
Protoxylem is towards pith and metaxylem towards periphery. Xylem is ... ... [ Har PMT 2002]
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a) Exarch
0%
b) Endarch
0%
c) Mesarch
0%
d) Centrarch
Explanation
In stems, the protoxylem lies towards the centre (pith) and the metaxylem lies towards the periphery of the organ. This type of primary xylem is called endarch. Answer : (b)
Q.4
Secondary growth does not occur in monocots as their vascular bundles are ... ..[ JIPMER 1997]
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a) Radial
0%
b) Scattered
0%
c) Enclosed by sclerenchyma
0%
d) Closed
Explanation
Secondary growth does not occur in a monocot plant because of the absence of cambium in vascular bundle in between xylem and phloem no secondary growth is seen in monocots.But in monocots like Draceana Secondary growth is seen .Only in some exceptional cases but it is rare. Answer : (d)
Q.5
Secondary growth is absent in ... ..[ CPMT 1998]
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a) Hydrophytes
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b) Mesophytes
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c) Halophytes
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d) Xerophytes
Explanation
Due to lack of vascular cambium in monocotyledons, secondary growth is absent. Hydrophytes do not show secondary growth because the vascular cambium is absent Answer : (a)
Q.6
Vascular bundles are closed when they ... .. [ Odisha 2004]
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a) Have cambium
0%
b) Lack cambium
0%
c) Lack pericycle
0%
d) Lack endodermis
Explanation
Closed vascular bundles, the cambium will be absent (fascicular cambium absent) and they do not show secondary growth (closed for secondary growth). Closed vascular bundles are seen in monocotyledons (monocots) Answer : (b)
Q.7
Xylem produced through centrifugal differentiation is ... ..
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a) Exarch
0%
b) Endarch
0%
c) Mesarch
0%
d) Centrarch
Explanation
Endarch condition involves the development of protoxylem from the innermost procambial cells adjacent to pith. or A condition in which protoxylem lies towards the centre and metaxylem towards the periphery.(Stem) Development is inward to outward. Hence, protoxylem is found inside to metaxylem . This is considered to be centrifugal pattern of arrangement Answer : (b)
Q.8
Radial vascular bundles occur in ... .. [ CPMT 1996]
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a) Stem
0%
b) Monocot root
0%
c) Dicot root
0%
d) Both monocot and dicot roots
Explanation
Answer : (d)
Q.9
Portion of apical meristem that gives rise to xylem tissue is called ... ..[ WB 2012]
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a) Protoxylem
0%
b) Procambium
0%
c) Metaxylem
0%
d) Tracheid
Explanation
Answer : (b)
Q.10
In a vascular bundle, xylem shows centripetal development. It is ... .. [ KCET 2008]
0%
a) Centrarch
0%
b) Mesarch
0%
c) Endarch
0%
d) Exarch
Explanation
Answer : (d)
Q.11
Totipotency is present in ... .. [ AFMC 2000]
0%
a) Meristem
0%
b) Cambium
0%
c) Phloem
0%
d) Cork
Explanation
Answer : (a)
Q.12
Meristematic cells are characterised by ... ... [ Manipal 2005]
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a) Thin cell walls and large intercellular space
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b) Thin cell walls and no intercellular spaces
0%
c) Thick cell walls and large intercellular spaces
0%
d) Thick cell walls and small intercellular spaces
Explanation
Answer : (b)
Q.13
Heart wood is ... .. [ HPPMT 2010]
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a) Outer part of secondary xylem
0%
b) Inner part of secondary xylem
0%
c) Outer part of secondary phloem
0%
d) Inner part of secondary phloem
Explanation
Answer : (b)
Q.14
Assertion: In collateral vascular bundles, phloem is situated towards inner side. Reason: In monocot stem, cambium is present ... .. [ AIIMS 2008]
0%
a) If both the assertion and reason are true and reason explains the assertion
0%
b) If both the assertion and reason are true but reason does not explain the assertion.
0%
c) If assertion is true but reason is false
0%
d) If assertion and reason both are false
Explanation
Collateral Bundle: A vascular bundle in which a strand of phloem is present external to the strand of xylem on the same radius side by side is known as collateral bundle. Cambium is absent in most of the monocots as they lack secondary growth Answer : (d)
Q.15
Large nearly empty, colourless cells present on upper surface of grass leaf are ... ... [ kerala 2006]
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a) Accessory cells
0%
b) Bulliform cells
0%
c) Palisade parenchyma
0%
d) Spongy parenchyma
Explanation
Answer : (b)
Q.16
Sclereids belongs to ... ... [ BV 2003]
0%
a) Collenchyma
0%
b) Xylem
0%
c) Sclerenchyma
0%
d) Sclerenchyma fibres
Explanation
Answer : (c)
Q.17
Tissue taking part in transporting organic nutrients from spurce or storage region is ... .. [ Manipal 1995]
0%
a) Phloem
0%
b) Parenchyma
0%
c) Vascular rays
0%
d) Xylem
Explanation
Answer : (a)
Q.18
Active cell division are found in ... ..
0%
a) Latex
0%
b) Pith
0%
c) internode
0%
d) Root and shoot tip
Explanation
Answer : (d)
Q.19
Vascular bundle having xylem and phloem on the same radius is ... .. [ RPMT 1991]
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a) Concentric
0%
b) Radial
0%
c) Open
0%
d) Collateral
Explanation
In radial vascular bundles the components are arranged separately (truly they cannot be called as bundles). Here the xylem and phloem are arranged separately in different radii. Radial vascular bundles are typically found in the roots of monocots and dicots. Typical vascular bundles are conjoint vascular bundles Answer : (d)
Q.20
Annual rings are found in ... .. [ RPMT 1996]
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a) Monocot stems
0%
b) Dicot stems
0%
c) Monocot roots
0%
d) Dicot roots
Explanation
The internal structure of the dicotyledonous stem The cells in the cambium ring start dividing to form secondary phloem (on the outside of the cambium ring) and secondary xylem (on the inside of the cambium ring). Each year another ring of secondary phloem and secondary xylem is formed, making the stem grow wider. It is not possible to see the layers of secondary phloem but the secondary xylem layers are visible. These form rings called annual rings which can be used to work out the age of a plant. Answer : (b)
Q.21
A living mechanical tissue having cellulosic wall thickening is ... .. [ Manipal 2001]
0%
a) Sclerenchyma
0%
b) Collenchyma
0%
c) Parenchyma
0%
d) Aerenchyma
Explanation
Answer : (b)
Q.22
Casparian thickenings occur in the cells of ... ..[ KCET 2011]
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a) Pericycle of stem
0%
b) Endodermis of stem
0%
c) Pericycle of root
0%
d) Endodermis of root
Explanation
The Casparian strip is a ring-like thickening of certain parts of the endodermal cell walls in plant roots, which forces water and dissolved minerals to pass through the semipermeable plasma membrane of these cells, rather than their cell walls. Answer : (b)
Q.23
Special feature of dividing cells is ... .. [ CPMT 2003]
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a) Large lacuna
0%
b) Thick cell walls
0%
c) Dense cytoplasm devoid of lacuna
0%
d) Large intercellular spaces
Explanation
Answer : (c)
Q.24
Vascular bundles grow from .. ..[ WB 2009]
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a) Protoderm
0%
b) Periderm
0%
c) Ground meristem
0%
d) Procambium
Explanation
Answer : (d)
Q.25
In monocots, the guard cells are ... .. [ RPMT 1998]
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a) Dumb-bell shaped
0%
b) Reniform
0%
c) Spherical
0%
d) Isodiametric
Explanation
Answer : (a)
Q.26
Jute fibres deteriorate because they have ... ... [ Odisha 2006]
0%
a) High cellulose
0%
b) Low cellulose
0%
c) High lignin
0%
d) Low lignin
Explanation
Answer : (c)
Q.27
A vascular bundle having phloem on both sides of xylem is ... ..[ BHU 2001 ]
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a) Conjoint collateral
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b) Radial
0%
c) Concentric
0%
d) Conjoint bicollateral
Explanation
Answer : (d)
Q.28
Dendrochronology is the study of ... ... [ CPMT 2004]
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a) Height of a tree
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b) Diameter of tree
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c) Age of the tree by counting the annual rings in the main stem
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d) None of these
Explanation
Answer : (c)
Q.29
Sclereids found in seed coat of pulses are ... ..
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a) Macrosclereids
0%
b) Brachysclereids
0%
c) Osteosclereids
0%
d) Astrosclereids
Explanation
Answer : (a)
Q.30
Gymnosperms are soft-wooded as they lack .. ..[ CBSE 2012]
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a) Cambium
0%
b) Phloem fibres
0%
c) Thick- walled tracheids
0%
d) Xylem fibres
Explanation
Answer : (d)
Q.31
What is true about a monocot leaf ... .. [ CBSE 1990]
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a) Reticulate venation
0%
b) Absence of bulliform cells from epidermis
0%
c) Mesophyll not differentiated into palisade and spongy tissues
0%
d) Well differentiated mesophyll
Explanation
Answer : (c)
Q.32
Collateral open vascular bundles and eustele are found in ... .. [ RPMT 2006]
0%
a) Dicot root
0%
b) Dicot stem
0%
c) Monocot stem
0%
d) Monocot root
Explanation
Answer : (b)
Q.33
The activity of sieve tubes is remotely controlled by protoplasm of ... ..
0%
a) Phloem parenchyma
0%
b) Companion cells
0%
c) Phloem fibres
0%
d) Both phloem parenchyma and phloem fibres
Explanation
Answer : (b)
Q.34
Casparian strips occur in ... .. [ JKCMEE 2000]
0%
a) Longitudinal and radial walls of epidermal cells
0%
b) Longitudinal walls of xylem
0%
c) All walls of endodermis
0%
d) Radial walls of endodermis
Explanation
Answer : (c)
Q.35
Quiescent centre is region of root apex which is ... .. [ Wardha 2005]
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a) Actively dividing
0%
b) Water absorption area
0%
c) Inactive cells
0%
d) Root hair area
Explanation
Answer : (c)
Q.36
Which one contains only living cells? ... .. [ JIPMER 1996]
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a) Rays and parenchyma
0%
b) Vessels
0%
c) Sclerenchyma
0%
d) Tracheids
Explanation
Answer : (a)
Q.37
Amphivasal or leptocentric vascular bundles are found in ... .. [ BHU 1999]
0%
a) Cycas and Dryopteris
0%
b) Dracaena and Yucca
0%
c) Helianthus and Cucurbita
0%
d) Maize and Wheat
Explanation
Answer : (b)
Q.38
Mesophyll is differentiated into palisade and spongy tissues in .. .. [ BHU 1991]
0%
a) Extremely xerophyte leaves
0%
b) hydrophyte leaves
0%
c) Monocot leaves
0%
d) Dicot leaves
Explanation
Answer : (d)
Q.39
Which of the following is not part of epidermal tissue system ... ..[ kerala 2010]
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a) Trichome
0%
b) Companion cells
0%
c) Guard cells
0%
d) Subsidiary cells
Explanation
Answer : (b)
Q.40
Which one is not formed from procambium? [ Wardha 2005]
0%
a) Xylem
0%
b) Phloem
0%
c) Intrafascicular cambium
0%
d) Interfascicular cambium
Explanation
Answer : (d)
Q.41
Fusiform initials produce ... .. [ MPPMT 2007]
0%
a) Vascular rays
0%
b) Primary phloem
0%
c) Tracheary elements
0%
d) Ray parenchyma
Explanation
Answer : (c)
Q.42
Radial vascular bundles occur in ... ..[ RPMT 1992]
0%
a) Stem
0%
b) Monocot stem
0%
c) Dicot stem
0%
d) Root
Explanation
Answer : (d)
Q.43
Longest fibres are found in ... .. [ Pb PMT 1998]
0%
a) Jute
0%
b) Cotton
0%
c) Sunn Hemp
0%
d) Coir
Explanation
Answer : (a)
Q.44
Root cap is formed by ... ... [ AIIMS 2000]
0%
a) Dermatogen
0%
b) Calyptrogen
0%
c) Wound cambium
0%
d) Vascular cambium
Explanation
Answer : (b)
Q.45
In dicot root showing secondary growth, cork is found ... .. [ JIPMER 1999]
0%
a) External to primary cortex
0%
b) Inner to endodermis and outer to pericycle
0%
c) Outer to endodermis and inner to primary cortex
0%
d) Inner to endodermis and external to primary phloem
Explanation
Answer : (d)
Q.46
Jute of commerce is got from ... .. [ Odisha 2005]
0%
a) Primary phloem
0%
b) Secondary phloem
0%
c) Secondary xylem
0%
d) Primary xylem
Explanation
Answer : (b)
Q.47
Epidermis and epiblema are produced from ... .... [ BHU 2002]
0%
a) Phellogen
0%
b) Calyptrogen
0%
c) Procambium
0%
d) Protoderm
Explanation
Answer : (d)
Q.48
Endodermis is part of ... .. [ EAMCET 2002]
0%
a) Epidermal system
0%
b) Interstellar issue
0%
c) Extrastelar tissue
0%
d) Vascular tissue
Explanation
Answer : (c)
Q.49
In dicot stems, vascular cambium is formed from ... .. [ Odisha 2008]
0%
a) Procambium
0%
b) Cambium
0%
c) Promeristem
0%
d) Protoderm
Explanation
Answer : (a)
Q.50
In an annual ring, the light coloured part is ... ..[ DPMT 2009]
0%
a) Heart wood
0%
b) Sapwood
0%
c) Early wood
0%
d) Late wood
Explanation
Early wood plus autumn wood of a year constitute annual ring. The early wood is light in colour and constitute major pan of annual ring. The autumn wood is darker in colour. Wood consists of secondary xylem. Answer : (c)
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