Mechanical barriers provide a first line of defence against insect pests and pathogens, these mechanical barriers developed by plants;

COLUMN A	COLUMN B
A. Thorns	i) It can be found on the stem and petioles of roses and are formed by the epidermis
B. Spines	ii) Found on a lemon tree (Citrus sp.) are modified branches, as can be seen by their position in the axil of a leaf
C. Prickles	iii) Found on shoot and leaves of tomato (Solanum lycopersicum) are derived from epidermal cells
D. Trichomes	iv) which are characteristic of cacti (Opuntia spp.) in the New World, are modified leaves

Match correctly following combination of barrier developed by plants ;

TLS Online TPP Program

#Question id: 15236

#SCPH28 | Zoology

Polyacrylamide gels are formed from the polymerisation of acrylamide monomer in the presence of

A) Agarose

B) TEMED

C) APS

D) bis-acrylamide

TLS Online TPP Program

#Question id: 15237

#SCPH01 Biochemistry

Agarose gels are used for the electrophoresis of

A. Proteins

B. DNA

C. RNA

D. Amino acids

TLS Online TPP Program

#Question id: 15237

#SCPH06 I Botany

Agarose gels are used for the electrophoresis of

A. Proteins

B. DNA

C. RNA

D. Amino acids

TLS Online TPP Program

#Question id: 15237

#SCPH28 | Zoology

Agarose gels are used for the electrophoresis of

A. Proteins

B. DNA

C. RNA

D. Amino acids

TLS Online TPP Program

#Question id: 15238

#SCPH01 Biochemistry

Electrophoretic resolution can be mainly changed by adjusting the

a) current 

b) pH of buffer system

c) luminous intensity 

d) Gel concentration

TLS Online TPP Program

#Question id: 15238

#SCPH06 I Botany

Electrophoretic resolution can be mainly changed by adjusting the

a) current 

b) pH of buffer system

c) luminous intensity 

d) Gel concentration