Which of the following is a technique of watering plants by making use of narrow tubings which deliver water directly at the base of the plant?

The anti-malarial drug quinine is made from a plant. The plant is

A. Neem

B. Eucalyptus

C. Cinnamon

D. Cinchona

The causal organism of black stem rust of wheat is

A. Xanthomonas compestris

B. Pseudomonas solanacearum

C. Puccinia graminis tritici

D. Albugo candida

Match List-I with List-II and select the correct answer:

A. a-2, b-1, c-4, d-3

B. a-1, b-4, c-3, d-2

C. a-4, b-3, c-2, d-1

D. a-3, b-2, c-1, d-4

Which one of the following plants is used for green manuring in India?

A. Wheat

B. Sunhemp

C. Cotton

D. Rice