Few Sample questions for CET in
PLANT ANATOMY AND HISTOLOGY
- Potentialities of vegetative cells other than the zygote to give rise to a new plant is called
(a) inoculum
(b) polyploidy
(c) embryony
(d) totipotency - Meristematic cells generally possess
(a) dense cytoplasm only
(b) non vacuolated, dense cytoplasm and a metabolic nucleus
(c) cytoplasm with active chloroplasts and vacuoles
(d) cytoplasm with vacuoles - Dividing cells which are not yet committed to becoming specific cell type are (Comed 08)
(a) ground cells
(b) epidermal cells
(c) meristem cells
(d) periderm cells - Based on the developmental pattern, tissues are grouped as
(a) primary and secondary meristems
(b) meristematic and permanent tissues
(c) apical and intercalary meristems
(d) simple and complex tissues - Epidermis, cortex and stele are derived respectively from
(a) apical, intercalary and lateral meristems
(b) dermatogen, periblem and plerome
(c) calyptrogen, dermatogen and histogen
(d) periderm, protoderm and procambium - The meristematic tissue which gives rise to the vascular tissues is
(a) protoderm
(b) procambium
(c) ground meristem
(d) dermatogen - Meristematic tissue present between xylem and phloem in stems is a
(a) primary meristem
(b) secondary meristem
(c) intercalary meristem
(d) promeristem - Meristem that occurs at the junction of leaf lamina and sheathing base in grasses is
(a) apical meristem
(b) intercalary meristem
(c) lateral meristem
(d) secondary meristem - Grass stems elongate by the activity (CET ’04)
(a) primary meristem
(b) secondary meristem
(c) intercalary meristem
(d) apical meristem - Increase in the length of the petiole is generally due to the activity of
(a) apical meristem
(b) intercalary meristem
(c) lateral meristem
(d) vascular cambium - Intercalary meristem is located in
(a) Petiole and internode
(b) Stem tip
(c) Root
(d) Bud - Cambium is considered as a lateral meristem because
(a) it gives rise to lateral branches
(b) it increases the height of the plant
(c) it increases the girth of the plant
(d)it is responsible for the formation of flowers - Cork cambium is a
(a) primary meristem
(b) secondary meristem
(c) promeristem
(d) meristem associated with vascular bundle - Interfascicular cambium is a
(a) lateral meristem
(b) secondary meristem
(c) lateral and secondary meristem
(d) none of the above - An increase in the thickness or girth of the plant body is due to the activity of
(a) apical meristem
(b) intercalary meristem
(c) lateral meristem
(d) all the above - Examples for lateral meristem are (CET 09)
(a) phellogen and procambium
(b) fascicular cambium and procambium
(c) procambium and dermatogen
(d) fascicular cambium and cork cambium - In emergency or when wounds occur, the additional tissue formation and repair work takes place due to the activity of
(a) apical meristem
(b) phellogen
(c) intercalary meristem
(d) secondary cortex - Simple tissues are called so because they
(a) are thin walled
(b) are made up of single type of cells
(c) are made up of more than one type of cells
(d) have cells with dense, non-vacuolated cytoplasm with active nuclei - The most primitive and least specialised of the simple permanent tissues is
(a) parenchyma
(b) chlorenchyma
(c) collenchyma
(d) sclerenchyma - Characterstic feature of parenchyma cells is the
(a) presence of thckenings at the corners
(b) presence of lignified walls
(c) presence of intercellular spaces
(d) all the above - Parenchyma cells which are elongated and taper at either ends constitute
(a) prosenchyma
(b) chlorenchyma
(c) aerenchyma
(d) palisade parenchyma - Parenchyma cells which contain mineral crystals like raphides are called
(a) prosenchyma
(b) elaioplasts
(c) chondriosomes
(d) idioblasts - The coir of commercial importance is nothing but
(a) elongated parenchyma cells
(b) sclerenchyma cells
(c) collenchyma cells
(d) tracheae - Short sclerenchymatous cells which are irregular and variously shaped are called
(a) xylem fibres
(b) bast fibres
(c) sclerenchyma fibres
(d) sclereids - Coconut shell and wall of pomaceous fruits like pear are composed of
(a) sclereids
(b) fibres
(c) collenchyma
(d) wood fibres - Match the following and choose the answer which gives the correct combination of alphabets of the two columns.
A. Osteosclereid a) Isodiametric
B. Asterosclereid b) Rod shaped
C. Brachysclereid c) Star shaped
D. Macrosclereid d) Bone like
(a) A - d, B - c, C - a, D – b
(b) A - d, B - a, C - b, D - c
(c) A - c, B - d, C - a, D – b
(d) A - d, B - c, C - b, D - a - The balloon like ingrowths of adjacent parenchyma cells in the tracheids and vessels are called
(a) callose
(b) vesicles
(c) tylosoids
(d) tyloses - Wood parenchyma cells are associated with (1987)
(a) bast
(b) bark
(c) phloem
(d) xylem - Annular and spiral thickenings are found in
(a) protoxytem
(b) metaxylem
(c) primary xylem
(d) both (a) and (b) - The older xylem elements are central and the younger are peripheral. Here, the order of differentiation of xylem is
(a) acropetal
(b) basipetal
(c) centripetal
(d) centrifugal - Wounded plants or those under stress have in their sieve tubes a polymer of glucose called
(a) cellulose
(b) hemicellulose
(c) callose
(d) callus - Phloem in monocots lacks
(a) phloem fibres
(b) phloem parenchyma
(c) sieve elements
(d) companion cells. - Albuminous cells are the elements of phloem in
(a) angiosperms
(b) gymnosperms
(c) pteridophytes
(d) none of these - The cambium ring formed during secondary growth is a combination of
(a) promeristem & primary meristem
(b) primary meristem & secondary meristem
(c) intercalary meristem & ground meristem
(d) secondary meristem & intercalary meristem - During secondary growth, the fusiform initials give rise to
(a) secondary vascular tissues
(b) medullary rays
(c) secondary cortex
(d) medulla - In one year, secondary xylem is formed
(a) only once
(b) twice
(c) thrice
(d) many times - Periderm is formed from
(a) phellogen
(b) fascicular cambium
(c) interfascicular cambium
(c) vascular cambium - An annual ring consists of one ring each of
(a) heart wood & sap wood
(b) early wood & late wood
(c) duramen & laburnum
(d) periderm - Annual rings consist of
(a) primary phloem and medullary rays
(b) secondary phloem and medullary rays
(c) primary xylem and medullary rays
(d) secondary xylem and medullary rays - In a dicot plant, the annual rings are formed due to
(a) alternate rings of xylem and phloem every year
(b) formation of xylem in one year and phloem in the subsequent year
(c) formation of elements of different diameters and wall thicknesses under varying environmental condition
(d) all of these - As secondary growth proceeds, in a dicot stem, the thickness of (2006)
(a) sapwood increases
(b) heartwood increases
(c) both sapwood & heart wood increases
(d) both heart wood & sapwood remains the same - The older resin clogged secondary xylem in the central part of the tree trunk and the younger outer secondary xylem which conducts water are _____ and _____ respectively. (Comed 08)
(a) duramen and laburnum
(b) alburnum and duramen
(c) autumn wood and spring wood
(d) spring wood and autumn wood - What is / are true about heart wood ? (CET 09)
(A) It does not help in water conduction
(B) It is also called alburnum
(C) It is dark in colour but very soft
(D)It has tracheary elements which are filled with tannin, resin, etc.,
(a) B, C and D (b) A and D (c) B and D (d) A, B and C - Identify the correct statement; (CET 09)
(a) Because of marked climatic variations, plants growing near sea shore don’t produce annual rings
(b) The age of the plant can be determined by its height
(c) Healing of damaged tissue is because of the activity of sclerenchyma cells
(d) Grafting is difficult in monocot plants as they have scattered vascular bundles - In which of the following, there is no differentiation of bark, sap wood and heart wood ?
(a) Date palm
(b) Neem
(c) Mango
(d) Banyan - Porous wood is characterized by the
(a) absence of tracheae
(b) presence of vessels
(c) absence of vessels
(d) presence of sieve tubes - Major part of wood of old dicot stem is filled with tannins, resins and gums. This wood is called
(a) heart wood
(b) hard wood
(c) laburnum
(d) spring wood - The wood of commerce is
(a) Sap wood
(b) Heart wood
(c) Spring wood
(d) Autumn wood - A waterproofing substance secreted by the cork and endodermal cells is
(a) cutin
(b) tannin
(c) suberin
(d) lignin - With reference to bark, which one of the following statements is wrong ?
(a) it is a tissue that is external to phellogen
(b) it is a tissue with cells having a living protoplasm
(c) it protects the plant from infection
(d) it prevents the loss of water from the plant body - Loosely arranged achlorophyllous parenchymatous cells in lenticels constitute
(a) epithem
(b) complementary tissue
(c) velamen tissue
(d) exodermis - If the cork from a tree is not removed carefully, then
(a) the xylem layer transporting water and minerals can be damaged
(b) the primary medullary rays giving strength can be damaged
(c) the inner pith with storage cells can be damaged
(d) the phloem used in transporting the sugars can be damaged - Identify the correct statement with respect to pericycle;
(a) It is distinguished in monocot stems
(b) It is the region of origin of lateral roots
(c) It is partly sclerenchymatous in roots
(d) It is the innermost layer of cortex - Lysigenous cavities are characteristic of
(a) Maize stem
(b) Helianthus stem
(c) Maize root
(d) Helianthus leaf - Lysigenous cavity is formed by
(a) protoxylem
(b) metaxylem
(c) secondary xylem
(d) none of these - Pith is large and very well developed in
(a) monocot stem
(b) monocot root
(c) dicot root
(d) none of these - Parts of the stem which are present in dictos but absent in monocots are
(a) epidermis & endodermis
(b) hypodermis & endodermis
(c) hypodermis & pericycle
(d) endodermis & pericycle - Endodermis of Helianthus stem is also known as
(a) starch sheath
(b) bundle sheath
(c) bundle cap
(d) border parenchyma - In bifacial leaf
(a) mesophyll is differentiated
(b) mesophyll is undifferentiated
(c) there are usually more number of stomata on the upper epidermis
(d) there are equal number of stomata on both the epidermal layers - A collateral vascular bundle is one in which
(a) xylem is surrounded by phloem
(b) xylem and phloem lie in the same radius, xylem being external and phloem internal
(c) phloem is surrounded by xylem
(d) xylem and phloem lie in the same bundle, xylem being internal and phloem external - A bicollateral vascular bundle has the following arrangement of tissues (2004)
(a) outer phloem – outer cambium – middle xylem – inner cambium – inner phloem
(b) outer xylem – outer cambium – middle phloem – inner cambium
(c) outer phloem – outer xylem – middle cambium – inner phloem – inner phloem
(d) outer cambium – outer phloem – middle xylem – inner phloem – inner cambium - In the monocot root, we observe (2001)
(a) suberised exodermis, polyarch xylem, pith
(b) suberised exodermis, casparian strip, passage cells, cambium
(c) exodermis, endarch, tetrach and closed bundles
(d) conjoint, collateral, open and polyarch bundles
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