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Question

Match the insect resistant morphological characteristics found in the plants with their corresponding insect pests

Column IColumn II(a)Hairy leaves(i)ballworm(b)Solid stem(ii)jassids(c)Smooth leaves(iii)Stemborer(d)High aspartic acid(iv)Stem sawfly

A

(a) : (ii) ; (b) : (i) ; (c) : (iv) ; (d) : (iii)
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B

(a) : (iv) ; (b) : (iii) ; (c) : (ii) ; (d) : (i)
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C

(a) : (iii) ; (b) : (i) ; (c) : (iv) ; (d) : (ii)
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D

(a) : (ii) ; (b) : (iv) ; (c) : (i) ; (d) : (iii)
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Solution

The correct option is D
(a) : (ii) ; (b) : (iv) ; (c) : (i) ; (d) : (iii)
Insect resistance in host crop plants may be due to morphological, biochemical or physiological characteristics.

Hairy leaves in cotton provide resistance to jassids.Wheat also exhibits a similar mechanism.


Smooth leaved nectarless cotton varieties do not attract bollworms.

Solid stems in wheat provide resistance to stem sawfly.

High aspartic acid, low nitrogen and low sugar content in maize resist stem borers.

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