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: 10782

#Section 6: Plant, Animal and Microbial Biotechnology

Which one of the following are not shown the characteristics of Saponins_____

TLS Online TPP Program

#Question id: 10783

#Section 6: Plant, Animal and Microbial Biotechnology

which of the following compounds are more diversified in terms of soluibility such as : Some are soluble only in organic solvents, some are water-soluble carboxylic acids and glycosides, and others are large, insoluble polymers;

TLS Online TPP Program

#Question id: 10784

#Section 6: Plant, Animal and Microbial Biotechnology

The precursor of phenolic compound is___

TLS Online TPP Program

#Question id: 10785

#Section 6: Plant, Animal and Microbial Biotechnology

Plant phenolics compound are biosynthesized from___

TLS Online TPP Program

#Question id: 10786

#Section 6: Plant, Animal and Microbial Biotechnology

Alkaloids are usually synthesized from one of a few common amino acids such as___

TLS Online TPP Program

#Question id: 10787

#Section 6: Plant, Animal and Microbial Biotechnology

Which structure represents cinnamic acid___