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: 18644

#SCPH06 I Botany

A laboratory technique used to separate DNA, RNA or protein molecules based on their size and electrical charge.

TLS Online TPP Program

#Question id: 3430

#SCPH06 I Botany

The proximate causes of behavior are interactions with the environment, but behavior is ultimately shaped by

TLS Online TPP Program

#Question id: 5751

#SCPH06 I Botany

A biochemical mutant that must be supplied with a particular nutrient for growth would be described as a(n)

TLS Online TPP Program

#Question id: 16006

#SCPH05 I Biotechnology

Which of the following is incorrect?

TLS Online TPP Program

#Question id: 5246

#SCPH06 I Botany

The end result of F factor mediated conjugation: