-
question_answer1)
In dicot stem, the secondary growth takes place by [CPMT 1992]
A)
Primary cambium done
clear
B)
Secondary cambium done
clear
C)
Development of cambium in stele region done
clear
D)
Development of cambium in stele and in the cortical region done
clear
View Solution play_arrow
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question_answer2)
Cambium causes growth in [AFMC 1984]
A)
Circumference done
clear
B)
Width (diameter) done
clear
C)
Leaves done
clear
D)
Length done
clear
View Solution play_arrow
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question_answer3)
Conduction of sap in plants occurs through [CPMT 1992]
A)
Heartwood done
clear
B)
Sapwood done
clear
C)
Xylem done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer4)
'Sap wood' is otherwise called
A)
Duramen done
clear
B)
Alburnum done
clear
C)
Pith done
clear
D)
Medullary rays done
clear
View Solution play_arrow
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question_answer5)
The function of cork cambium (phellogen) is to produce [CPMT 1981, 84; AFMC 1985]
A)
Cork and secondary cortex done
clear
B)
Secondary xylem and secondary phloem done
clear
C)
Cork done
clear
D)
Secondary cortex and phloem done
clear
View Solution play_arrow
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question_answer6)
Other names of secondary cortex, cork cambium and cork are
A)
Phellem, phelloderm and phellogen done
clear
B)
Phellogen, phellem and phelloderm done
clear
C)
Phelloderm, phellogen and phellem done
clear
D)
Phellogen, phelloderm and phellem done
clear
View Solution play_arrow
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question_answer7)
In dicot roots, cork cambium is derived from [MP PMT 1984]
A)
Epidermis done
clear
B)
Hypodermis done
clear
C)
Cortex done
clear
D)
Pericycle done
clear
View Solution play_arrow
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question_answer8)
Periderm is made up of [MP PMT 1995]
A)
Phellem done
clear
B)
Phellogen done
clear
C)
Phelloderm done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer9)
If four radial vascular bundles are present, then the structure will be [CBSE PMT 2002]
A)
Monocot stem done
clear
B)
Monocot root done
clear
C)
Dicot stem done
clear
D)
Dicot root done
clear
View Solution play_arrow
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question_answer10)
Secondary growth is absent in [CPMT 1992]
A)
Dicot stem done
clear
B)
Gymnosperms done
clear
C)
Monocot stem done
clear
D)
Dicot root done
clear
View Solution play_arrow
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question_answer11)
Which of the following is responsible for the growth in circumference or girth of stem and root in plants (in crucifers) [CPMT 1983, 84; JIPMER 1990]
A)
Xylem done
clear
B)
Phloem done
clear
C)
Cortex done
clear
D)
Cambium (Meristematic tissue) done
clear
View Solution play_arrow
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question_answer12)
Fascicular cambium found in dicot stem is a [CPMT 1990]
A)
Secondary meristem done
clear
B)
Primary meristem done
clear
C)
Intercalary meristem done
clear
D)
Apical meristem done
clear
View Solution play_arrow
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question_answer13)
Which one of the tissue is formed in stems from cells cut off by the cambium on its inner side [AMU 1990]
A)
Wood fibres done
clear
B)
Bast fibres done
clear
C)
Sieve tubes done
clear
D)
Companion cells done
clear
View Solution play_arrow
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question_answer14)
Cork cells are [CPMT 1982]
A)
Dead done
clear
B)
Photosynthetic done
clear
C)
Elongated and participate in movement done
clear
D)
Meristematic done
clear
View Solution play_arrow
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question_answer15)
Youngest layer of secondary xylem in wood of dicot stem is located just [CPMT 1973, 78, 84, 86,93; DPMT 1985]
A)
Outside the cambium done
clear
B)
Inside the cambium done
clear
C)
Outside pith done
clear
D)
Inside the cortex done
clear
View Solution play_arrow
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question_answer16)
Annual rings are distinct in plants growing in [BHU 1978, 84, 91]
A)
Tropical regions done
clear
B)
Arctic region done
clear
C)
Grasslands done
clear
D)
Temperate region done
clear
View Solution play_arrow
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question_answer17)
After two or three years of the secondary growth, the cortex in dicot root [CPMT 1972, 84]
A)
Remains intact done
clear
B)
Is completely sloughed away done
clear
C)
Is largely lost done
clear
D)
Is converted into cork done
clear
View Solution play_arrow
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question_answer18)
Growth rings are well marked in trees growing in [DPMT 1986]
A)
Shimla done
clear
B)
Bombay done
clear
C)
Madras done
clear
D)
Calcutta done
clear
View Solution play_arrow
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question_answer19)
The xylem which is functional in a dicot tree is [AMU 1989]
A)
Spring wood done
clear
B)
Sap wood done
clear
C)
Autumn wood done
clear
D)
Heart wood done
clear
View Solution play_arrow
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question_answer20)
External protective tissues of plants are (of dicot stem are) [BHU 1980; CPMT 1984]
A)
Cork and pericycle done
clear
B)
Cortex and epidermis done
clear
C)
Pericycle and cortex done
clear
D)
Epidermis and cork done
clear
View Solution play_arrow
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question_answer21)
Cork cambium is a [BHU 1983; AFMC 1984; JIPMER 1983, 86]
A)
Secondary meristem done
clear
B)
Apical meristem done
clear
C)
Intercalary meristem done
clear
D)
Primary meristem done
clear
View Solution play_arrow
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question_answer22)
The cambium which produces cork is known as [BHU 1990; JIPMER 1983]
A)
Phelloderm done
clear
B)
Phellogen done
clear
C)
Periblem done
clear
D)
Periderm done
clear
View Solution play_arrow
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question_answer23)
In which of the following, there is no differentiation of bark, sap wood and heart wood [DPMT 1983]
A)
Ashok done
clear
B)
Neem done
clear
C)
Mango done
clear
D)
Date palm done
clear
View Solution play_arrow
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question_answer24)
Growth rings (annual rings) are formed by activity of [AFMC 1984, 85, 86, 90]
A)
Cambium done
clear
B)
Xylem done
clear
C)
Phloem done
clear
D)
Both xylem and phloem done
clear
View Solution play_arrow
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question_answer25)
An example of monocots showing secondary growth in stems is [CPMT 1985]
A)
Lilium done
clear
B)
Cocos done
clear
C)
Asparagus done
clear
D)
Yucca or Dracaena done
clear
View Solution play_arrow
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question_answer26)
In dicot stem secondary growth is due to the activity of [Pb. PMT 2004,05]
A)
Apical meristem done
clear
B)
Lateral meristem done
clear
C)
Cork done
clear
D)
Back done
clear
View Solution play_arrow
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question_answer27)
Tissue present in an annual ring is [BVP 2002]
A)
Secondary xylem and phloem done
clear
B)
Primary xylem and phloem done
clear
C)
Secondary xylem only done
clear
D)
Primary phloem and secondary xylem done
clear
View Solution play_arrow
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question_answer28)
Normal secondary growth occurs in [BVP 2001]
A)
Dicot stem done
clear
B)
Monocot stem done
clear
C)
Both [a] and [b] done
clear
D)
Root done
clear
View Solution play_arrow
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question_answer29)
Dendrochronology is the study of [AMU 1986]
A)
Height of a tree done
clear
B)
Diameter of a tree done
clear
C)
Age of a tree by counting the number of annual rings in the main stem done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer30)
Tyloses are found in [MP PMT 1996]
A)
Secondary xylem done
clear
B)
Secondary phloem done
clear
C)
Callus tissue done
clear
D)
Cork cells done
clear
View Solution play_arrow
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question_answer31)
Fusiform initials form [AIIMS 1987]
A)
Vascular rays done
clear
B)
Treacheary elements done
clear
C)
Ray parenchyma done
clear
D)
Phloem parenchyma done
clear
View Solution play_arrow
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question_answer32)
In the primary tissues of the stem, the cambium separating xylem and phloem is called [CPMT 1987]
A)
Procambium done
clear
B)
Fascicular cambium done
clear
C)
Cork cambium done
clear
D)
Interfascicular cambium done
clear
View Solution play_arrow
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question_answer33)
The trees growing in desert will [CPMT 1985]
A)
Show alternate rings of xylem and sclerenchyma done
clear
B)
Have only conjunctive tissue and phloem formed by the activity of cambium done
clear
C)
Show distinct annual rings done
clear
D)
Not show distinct annual rings done
clear
View Solution play_arrow
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question_answer34)
Which would do maximum harm to a tree? The loss of [CPMT 1984]
A)
Half of its branches done
clear
B)
All of its leaves done
clear
C)
Half of its flowers done
clear
D)
Its bark done
clear
View Solution play_arrow
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question_answer35)
Knots in stems are formed due to [DPMT 1980, 86; MP PMT 1984; BHU 1988]
A)
Tumors formed due to bacterial infection of wounds done
clear
B)
Outgrowth of seconday tissue over wounds done
clear
C)
Injury caused by insects done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer36)
The total time in which growth occurs is called [CPMT 1987]
A)
Phase of maturation done
clear
B)
Phase of cell division done
clear
C)
Phase of elongation done
clear
D)
Grand period of growth done
clear
View Solution play_arrow
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question_answer37)
In roots and stems, secondary growth takes place after the formation of [Bihar MDAT 1992]
A)
Cambium done
clear
B)
Sclerenchyma done
clear
C)
Cork done
clear
D)
Bark done
clear
View Solution play_arrow
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question_answer38)
The undifferentiated cells are present in
A)
Sepals of Geranium flower done
clear
B)
Cambium of oak done
clear
C)
Maple tree root system done
clear
D)
Root of Raphanus done
clear
View Solution play_arrow
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question_answer39)
As a tree grows older, which increases rapidly in thickness [DPMT 1990]
A)
Its heart wood done
clear
B)
Its cortex done
clear
C)
Its sap wood done
clear
D)
Its phloem done
clear
View Solution play_arrow
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question_answer40)
The axillary buds arise [DPMT 1990]
A)
Endogenously from the pericycle done
clear
B)
Exogenously from the tissues of the main growing point done
clear
C)
Endogenously from the cambial tissues done
clear
D)
Exogenously from the innermost cortex done
clear
View Solution play_arrow
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question_answer41)
Lenticel develops through the activity of [DPMT 1991]
A)
Vascular cambium done
clear
B)
Dermatogen done
clear
C)
Phellogen done
clear
D)
Intercalary meristem done
clear
View Solution play_arrow
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question_answer42)
In a stratified cambium, the fusiform initials are [CBSE PMT 1994]
A)
Long and overlap each other at the ends done
clear
B)
Short and overlap each other at the ends done
clear
C)
Short and arranged in horizontal tiers done
clear
D)
Short or long and overlap each other at the ends done
clear
View Solution play_arrow
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question_answer43)
Intrafascicular cambium is situated in [BVP 2003]
A)
Outside the vascular bundles done
clear
B)
In medullary rays done
clear
C)
Inside the vascular bundles done
clear
D)
In between the vascular bundles done
clear
View Solution play_arrow
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question_answer44)
Which of the following tissues originate from ray initials of a cambium
A)
Vascular rays done
clear
B)
Tracheids and vessels done
clear
C)
Xylem and phloem fibres done
clear
D)
Sieve tube and companion cells done
clear
View Solution play_arrow
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question_answer45)
The lateral roots generally originate in [DPMT 2003]
A)
Endodermal cells lying against phloem done
clear
B)
Cortex done
clear
C)
Pericycle cells lying against protoxylem done
clear
D)
Cork cambium done
clear
View Solution play_arrow
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question_answer46)
In old dicot stems, a major part of the wood is filled up with tannins, resins, gums etc. This part of wood is called
A)
Hard wood done
clear
B)
Heart wood done
clear
C)
Sap wood done
clear
D)
Soft wood done
clear
View Solution play_arrow
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question_answer47)
In summer, cambium
A)
Dies done
clear
B)
Is more active done
clear
C)
Is less active done
clear
D)
Is not active done
clear
View Solution play_arrow
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question_answer48)
The tissue made up of thin-walled rectangular cells responsible for the secondary growth is
A)
Cortex done
clear
B)
Xylem done
clear
C)
Cambium done
clear
D)
Pith done
clear
View Solution play_arrow
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question_answer49)
One year's growth in length of a young woody shoot is the distance between successive
A)
Rings of bud scale scars done
clear
B)
Leaf scars done
clear
C)
Branches done
clear
D)
Axillary buds done
clear
View Solution play_arrow
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question_answer50)
Stem and roots of cruciferae grow due to activity of
A)
Cortex done
clear
B)
Cambium done
clear
C)
Phloem done
clear
D)
Endoderm done
clear
View Solution play_arrow
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question_answer51)
Vascular cambium is a meristematic layer that cuts off [CBSE PMT 1990]
A)
Primary xylem and primary phloem done
clear
B)
Xylem vessels and xylem tracheids done
clear
C)
Primary xylem and secondary xylem done
clear
D)
Secondary xylem and secondary phloem done
clear
View Solution play_arrow
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question_answer52)
The waxy substance associated with cell walls of cork cells is or cork cells are impervious to water because of the presence or what is deposited on cork cells [CPMT 1981, 90; CBSE PMT 1994; AFMC 1985; Â DPMT 1990; MP PMT 2000; AIIMS 2004]
A)
Cutin done
clear
B)
Suberin done
clear
C)
Lignin done
clear
D)
Hemicellulose done
clear
View Solution play_arrow
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question_answer53)
If the heart wood region of plant is removed or decays
A)
Root will die first done
clear
B)
Shoot will die first done
clear
C)
Root and shoot die together done
clear
D)
Neither root nor shoot will die done
clear
View Solution play_arrow
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question_answer54)
No secondary growth occurs in monocot stem because
A)
Vascular bundles are scattered done
clear
B)
Vascular bundles are closed done
clear
C)
Vascular bundles are enclosed by bundle sheath done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer55)
Ring bark is present in
A)
Acer rebrum done
clear
B)
Pyrus communis done
clear
C)
Betula utilis done
clear
D)
Carya ovate done
clear
View Solution play_arrow
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question_answer56)
The number of cambial strands in vascular bundle of Cucurbita is
A)
Two done
clear
B)
Three done
clear
C)
One done
clear
D)
Four done
clear
View Solution play_arrow
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question_answer57)
In the first formed primary xylem the secondary wall thickening may be of
A)
Reticulate type done
clear
B)
Annular or helical type done
clear
C)
Pitted type done
clear
D)
Scalariform type done
clear
View Solution play_arrow
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question_answer58)
Each annual growth ring has
A)
An inner layer and an outer layer done
clear
B)
A single layer of xylem elements done
clear
C)
Uniform layer of xylem elements done
clear
D)
Many layers of xylem elements done
clear
View Solution play_arrow
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question_answer59)
After the secondary growth the youngest layer of secondary phloem in a dicot stem is located [CPMT 1980]
A)
Just outside the vascular cambium done
clear
B)
Just inside the vascular cambium done
clear
C)
Just inside the primary phloem done
clear
D)
Just outside the secondary xylem done
clear
View Solution play_arrow
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question_answer60)
Cork is a derivative of [CBSE PMT 1988; BHU 1982]
A)
Cork cambium (phellogen) or extra fascicular cambium done
clear
B)
Vascular cambium done
clear
C)
Fascicular cambium done
clear
D)
Interfascicular cambium done
clear
View Solution play_arrow
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question_answer61)
Lenticels are formed in bark, which are
A)
Aerating pores done
clear
B)
Made up of phloem done
clear
C)
Made up of xylem done
clear
D)
Found in monocot plants done
clear
View Solution play_arrow
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question_answer62)
Heart wood or duramen is [KCET 2001]
A)
Outer region of secondary xylem done
clear
B)
Inner region of secondary xylem done
clear
C)
Outer region of secondary phloem done
clear
D)
Inner region of secondary phloem done
clear
View Solution play_arrow
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question_answer63)
One cannot age a tree by its rings if that tree is located in which of the following forests
A)
Tropical deciduous done
clear
B)
Tropical evergreen done
clear
C)
Temperate deciduous done
clear
D)
Temperate evergreen done
clear
View Solution play_arrow
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question_answer64)
Commercial cork is obtained from [CPMT 1980; BHU 2003]
A)
Mango done
clear
B)
Oak (Quercus suber) done
clear
C)
Ficus religiosa done
clear
D)
Pinus done
clear
View Solution play_arrow
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question_answer65)
The pores present in the wall of plant's stem i.e., called [CPMT 1994]
A)
Lenticels done
clear
B)
Bark done
clear
C)
Dalipore done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer66)
Lenticels are found in [RPMT 1995]
A)
Young dicot stem done
clear
B)
Old dicot stem done
clear
C)
Monocot root done
clear
D)
Young root done
clear
View Solution play_arrow
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question_answer67)
Secondary growth or increase in diameter is due to [RPMT 1990]
A)
Ground meristem done
clear
B)
Procambium done
clear
C)
Cork and phelloderm done
clear
D)
Vascular cambium done
clear
View Solution play_arrow
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question_answer68)
Which of the following are derived from the secondary meristems
A)
Wood done
clear
B)
Phellem done
clear
C)
Phelloderm done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer69)
Which will decay faster if exposed freely [CBSE PMT 1993]
A)
Soft wood done
clear
B)
Heart wood done
clear
C)
Sap wood done
clear
D)
Wood with lots of fibres done
clear
View Solution play_arrow
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question_answer70)
Growth rings determine
A)
Age done
clear
B)
Length done
clear
C)
Breadth done
clear
D)
Number of branches of a plant done
clear
View Solution play_arrow
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question_answer71)
The collective name for cork cambium and phelloderm is  [Kashmir MEE 1995]
A)
Phellogen done
clear
B)
Periderm done
clear
C)
Endoderm done
clear
D)
Secondary tissue done
clear
View Solution play_arrow
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question_answer72)
Cork cambium is otherwise called [EAMCET 1993; RPMT 1997; CPMT 1999; Haryana PMT 2005]
A)
Phellem done
clear
B)
Phelloderm done
clear
C)
Periderm done
clear
D)
Phellogen done
clear
View Solution play_arrow
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question_answer73)
The vascular cambium in dicots is [EAMCET 1995]
A)
Lateral done
clear
B)
Apical done
clear
C)
Intercalary done
clear
D)
Secondary done
clear
View Solution play_arrow
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question_answer74)
Which of the following is a secondary meristem [CET Pune 1998]
A)
Phelloderm done
clear
B)
Primary cambium done
clear
C)
Cork cambium done
clear
D)
Promeristem done
clear
View Solution play_arrow
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question_answer75)
Girth of a dicot stem is increased by [CET Pune 1998]
A)
Xylem done
clear
B)
Cambium done
clear
C)
Phloem done
clear
D)
Ground tissue done
clear
View Solution play_arrow
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question_answer76)
Secondary growth is absent in [CPMT 1998]
A)
Hydrophytes done
clear
B)
Mesophytes done
clear
C)
Halophytes done
clear
D)
Xerophytes done
clear
View Solution play_arrow
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question_answer77)
The cell wall is impermeable to water and deposition of suberin is also found in [CPMT 1998]
A)
Bast done
clear
B)
Cork done
clear
C)
Bark done
clear
D)
Xylem done
clear
View Solution play_arrow
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question_answer78)
The cambium is an example of [CPMT 1998]
A)
Lateral meristem done
clear
B)
Intercalary meristem done
clear
C)
Apical meristem done
clear
D)
Primary meristem done
clear
View Solution play_arrow
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question_answer79)
Which of the following meristems is responsible for extrastelar secondary growth in dicotyledonous stem [CBSE PMT 1998]
A)
Phellogen done
clear
B)
Intrafascicular cambium done
clear
C)
Interfascicular cambium done
clear
D)
Intercalary meristem done
clear
View Solution play_arrow
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question_answer80)
The periderm includes [CBSE PMT 1998; Pb. PMT 2004]
A)
Cork done
clear
B)
Cambium done
clear
C)
Secondary phloem done
clear
D)
All of these done
clear
View Solution play_arrow
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question_answer81)
The functional xylem of dicot tree is [AFMC 2001]
A)
Sap wood done
clear
B)
Hard wood done
clear
C)
Heart wood done
clear
D)
Autumn wood done
clear
View Solution play_arrow
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question_answer82)
The bark of tree comprises [CPMT 1979, 96; CET Pune 1998]
A)
All the tissues outside the vascular cambium done
clear
B)
All the tissues outside the cork cambium done
clear
C)
Only the cork done
clear
D)
The cork and secondary cortex done
clear
View Solution play_arrow
-
question_answer83)
Which of the following is known as wood [AFMC 2003]
A)
Primary xylem done
clear
B)
Secondary xylem done
clear
C)
Secondary phloem done
clear
D)
Cambium done
clear
View Solution play_arrow
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question_answer84)
The best method to determine the age of tree is [MP PMT 2004]
A)
To find out the number of branches done
clear
B)
To count the number of annual rings done
clear
C)
To measure its diameter done
clear
D)
To count the number of leaves done
clear
View Solution play_arrow
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question_answer85)
In dicot stem, vascular bundles are [Orissa JEE 2004]
A)
Numerous scattered done
clear
B)
Arranged in a ring done
clear
C)
Without cambium done
clear
D)
Surrounded by bundle sheath done
clear
View Solution play_arrow
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question_answer86)
In a plant organ which is covered by periderm and in which the stomata are absent, some gaseous exchange still takes place through [AIIMS 2004]
A)
Aerenchyma done
clear
B)
Trichomes done
clear
C)
Pneumatophores done
clear
D)
Lenticels done
clear
View Solution play_arrow
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question_answer87)
Growth rings are formed due to activity of [CPMT 2004]
A)
Extrastelar cambium done
clear
B)
Intrastelar cambium done
clear
C)
Interstelar cambium done
clear
D)
Both [b] and [c] done
clear
View Solution play_arrow
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question_answer88)
Auxenometer is used to measure [Pb. PMT 2004]
A)
Length done
clear
B)
Width done
clear
C)
Depth done
clear
D)
Growth done
clear
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question_answer89)
Which of the following is not formed from procambium [Wardha 2005]
A)
Xylem done
clear
B)
Phloem done
clear
C)
Intrafascicular cambium done
clear
D)
Interfascicular cambium done
clear
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