Biotechnology for Pest Resistance

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

$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \text{(a)}& \text{Hairy leaves}& \text{(i)}& \text{ballworm}\\ \text{(b)}& \text{Solid stem}& \text{(ii)}& \text{jassids}\\ \text{(c)}& \text{Smooth leaves}& \text{(iii)}& \text{Stemborer}\\ \text{(d)}& \text{High aspartic acid}& \text{(iv)}& \text{Stem sawfly}\end{array}$

1. 
   (a) : (ii) ; (b) : (i) ; (c) : (iv) ; (d) : (iii)
2. 
   (a) : (iv) ; (b) : (iii) ; (c) : (ii) ; (d) : (i)
3. 
   (a) : (iii) ; (b) : (i) ; (c) : (iv) ; (d) : (ii)
4. 
   (a) : (ii) ; (b) : (iv) ; (c) : (i) ; (d) : (iii)

Q. Assertion (A): Maize is resistant to stem borers

Reason (R): This is due to high aspartic acid, high nitrogen and high sugar content in maize

1. Both the assertion and reason are true and the reason is the correct explanation of the assertion
2. Both the assertion and reason are true but the reason is not the correct explanation of the assertion
3. Assertion is true but the reason is false
4. Both the assertion and reason are false

Q. Which of the following have been matched correctly with respect to their mode of insect resistance?

1. Cotton – Hairy leaves
2. Wheat – Solid stems
3. Maize – Low sugar
4. Wheat – Smooth leaves

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

$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \text{(a)}& \text{Hairy leaves}& \text{(i)}& \text{ballworm}\\ \text{(b)}& \text{Solid stem}& \text{(ii)}& \text{jassids}\\ \text{(c)}& \text{Smooth leaves}& \text{(iii)}& \text{Stemborer}\\ \text{(d)}& \text{High aspartic acid}& \text{(iv)}& \text{Stem sawfly}\end{array}$

1. 
   (a) : (ii) ; (b) : (i) ; (c) : (iv) ; (d) : (iii)
2. 
   (a) : (iv) ; (b) : (iii) ; (c) : (ii) ; (d) : (i)
3. 
   (a) : (iii) ; (b) : (i) ; (c) : (iv) ; (d) : (ii)
4. 
   (a) : (ii) ; (b) : (iv) ; (c) : (i) ; (d) : (iii)

Q. The 'Witches' broom of legumes' is caused by a

1. Bacterium
2. Phytoplasma
3. Virus
4. Fungus

Q. Bt cotton is genetically modified to _______.

1. to prevent diseases
2. to prevent pest infestation
3. to become cold resistant
4. to become drought resistant