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 ;

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#Question id: 12679

#Part-A Aptitude & General Biotechnology

The diagonal of a square is 4√ 2 cm. The diagonal of another square whose area is double that of the first square is :

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#Question id: 2627

#Part-A Aptitude & General Biotechnology

Binding of repressor on to the operator sequences, RNA polymerase binding is analyzed by; Which one is incorrect.

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#Question id: 10758

#Part-B Specialized Branches in Biotechnology

The component of the soil water potential is hydrostatic pressure  (ψp) ,

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#Question id: 14143

#Part-A Aptitude & General Biotechnology

The higher is the score in the alignment _________

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#Question id: 304

#Part-B Specialized Branches in Biotechnology

As compared to covalent compounds electrovalent compounds generally possess ___________