NEET Biology Anatomy of Flowering Plants Question Bank

done Secondary Growth Total Questions - 89

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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;  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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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

• 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
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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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