Botany lecture notes

Botany Lecturer Recruitment Test 2017 by Kerala PSC: Model Question Paper 2/3


botany college lecturer exam by kpsc

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Kerala PSC Botany Lecturer / Assistant Professor Model Question Paper 2017 (Set 2/3)

Model/Sample Question Paper of Kerala PSC Botany Lecturer/Assistant Professor Recruitment Examination to be conducted by Kerala Public Service Commission Question for the appointment of Botany Lecturer/Assistant Professor in Government Colleges of Kerala under the Directorate of Collegiate Education, Trivandrum, Kerala. Questions are in MCQ (Multiple Choice Questions) format.

Botany Lecturer Test: Model Questions Set – 2/3

(1). The common intermediate in the synthesis of both adenine and guanine (purines) is

a.       IMP
b.      UMP
c.       AMP
d.      GMP

(2). What is Dobson?

a.       The unit of measure of ozone in the atmosphere
b.      The unit of the measure of thickness of ozone layer
c.       The unit of measure of concentration of CFC to destroy 1 mm of ozone layer
d.      The unit to measure the ozone hole

(3). The metabolite that bridges the gap between Glycolysis and the Kreb’s cycle is

a.       Oxaloacetate
b.      Pyruvate
c.       Acetyl Co-A
d.      Citrate

(4). Which of the following statement correctly describe the internal structure of a monocot root?

a.       Vascular bundles numerous, radial, with endarch xylem
b.      Vascular bundles numerous, radial with exarch xylem
c.       Vascular bundles limited in number, radial with endarch xylem
d.      Vascular bundles limited in number, radial with exarch xylem

(5). Which of the following is NOT a characteristic of K-selected species?

a.       Large number of progenies
b.      Parental care
c.       Delayed reproductive maturity
d.      Limited number of progenies

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Botany lecture notes

Kerala PSC Botany Lecturer Recruitment Test 2017: Model Question Paper 1/3


monothecous reniform anthers of hibiscus

Kerala PSC Botany Lecturer / Assistant Professor Model Question Paper 2017

Model/Sample Question Paper of Kerala PSC Botany Lecturer/Assistant Professor Recruitment Examination to be conducted by Kerala Public Service Commission Question for the appointment of Botany Lecturer/Assistant Professor in Government Colleges of Kerala under the Directorate of Collegiate Education, Trivandrum, Kerala. Questions are in MCQ (Multiple Choice Questions) format.

Botany Lecturer Test: Model Questions Set – 1/3

(1). Enzymes used to isolate protoplast are:

a.       Cellulase and lipase
b.      Pectinase and lipase
c.       Cellulases and pectinases
d.      Proteolytic enzymes and cellulose

(2). Which of the following statement describes the androecium of Malvaceae

a.       Numerous stamens, dithecous anthers
b.      Monadelphous, dithecous anthers
c.       Monadelphous, monothecous anthers
d.      Synandrous, monothecous anthers

(3). Which chemical induces fusion of the protoplast in somatic hybridization?

a.       Boric acid
b.      Polyethelene glycol
c.       Phosphoenol pyruvate
d.      Ethylene

(4). A continuous system formed by protoplasts and plasmodesmata in a tissue is

a.       Apoplast
b.      Protoplast
c.       Symplast
d.      Chloroplast

(5). Two or more related species that are morphologically identical but are incapable of producing fertile hybrids are called as:

a.       Biological species
b.      Sibling species
c.       Vicariance
d.      Typological species

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Botany lecture notes

Sclerenchyma: Structure, Classification and Functions with PPT


sclerenchymatous tissue ppt

Sclerenchyma
(Structure, Types and Functions of Sclerenchymatous Cells in Plants)

What are Sclerenchymatous Cells?

Ø  Sclerenchyma is a simple permanent tissue in plants.

Ø  Sclerenchymatous cells are dead at their maturity.

Ø  Cells do not have protoplast when they completely developed.

Ø  They have thick secondary cell wall.

Ø  The secondary cell wall is lignified and very hard.

Ø  Most of the sclerenchymatous cells show intrusive growth.

Different Types of Sclerenchymatous Cells in Plants:

Ø  Based on size, two types of sclerenchyma are described.

  (I).   Sclereids

(II).    Fibres

(I). Sclereids:

Ø  Sclereids are short sclerenchymatous cells.

Ø  They are also called as stone cells.

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Botany lecture notes

Collenchyma Cells in Plants: Structure, Classification and Functions with PPT

Functions of collechyma

Collenchyma
(Structure, Types and Functions of Collenchymatous Cells in Plants)

What is collenchyma?

Ø  Collenchyma is a simple permanent tissue in plants.

Ø  They are living cells with prominent nucleus and all the cell organelles.

Ø  Each collenchymatous cell is with a large and prominent vacuole in the centre.

Ø  The vacuole is filled with many secondary metabolites.

Ø  Unlike parenchyma, the collenchyma cells possess thick primary cell wall.

Ø  Thick walls are NOT lignified.

Ø  The thick wall is due to the deposition of hemicellulose and pectin along with cellulose.

Ø  Wall thickening in collenchyma is greatly affected by the extent of mechanical stress.

Ø  A plant part which in severe stress or motion due to high wind are more likely to possess more thickened collenchyma.

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Botany lecture notes

Parenchyma Cells in Plants: Structure, Classification and Functions (PPT)


functions of parenchyma

Parenchyma
(Structure, Classification and Function of Parenchyma)

What is simple tissue?

Ø  The tissue (a group of cells with particular function) composed of single type of cells.

Ø  Three types of simple tissue system in plants:

(1).  Parenchyma

(2).  Collenchyma

(3).  Sclerenchyma

What are the characteristics of Parenchyma (Parenchymatous Cells)?

Ø  Parenchyma is a simple permanent tissue.

Ø  They are living cells which contains plenty of water.

Ø  Cells are nucleated with prominent nucleus.

Ø  They are thin walled cells.

Ø  Cell wall composed of cellulosic primary cell wall only.

Ø  No lignin deposition in the cell wall of parenchyma.

Ø  Parenchymatous cells are relatively undifferentiated

Ø  Parenchyma is the least specialized along simple permanent tissues in plants.

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