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: 16031

#Section 6: Plant, Animal and Microbial Biotechnology

Which of the following is the technique used for the embryo culture?

TLS Online TPP Program

#Question id: 16032

#Section 6: Plant, Animal and Microbial Biotechnology

The major problem associated with the isolation of free cells and cell aggregates from organs is that of

TLS Online TPP Program

#Question id: 16072

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following is not a benefit of FASTA over BLAST?

TLS Online TPP Program

#Question id: 16073

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The initiation of FASTA format has ___ symbol.

TLS Online TPP Program

#Question id: 16074

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Match the items in Group 1 with an appropriate description in Group 2 

Group 1                                                    Group 2 

P. PSI-BLAST                                    1. ungapped, aligned motif 

Q. CLUSTALW                                 2. Profiles

R. BLOCK                                         3. Heuristic method

S. FASTA                                           4. Multiple sequence alignment

TLS Online TPP Program

#Question id: 16436

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The PCR consists of three defined sets of times and temperatures, termed steps