Question

Q1: Tick the correct answer ½x6=3 1: This insect is used to eliminate prickly pear(opuntia) from the crop fields: a) Cochineal b) Weevils c) Aphids 2: Meat and fish are preserved by using: a)Alcohol b) Salt c) Sugar 3: Yeast is used in production of: a) Sugar b) Alcohol c) Oxygen 4: Carrier of malaria causing protozoan is: a) Female anopheles mosquito b) cockroach c) Housefly 5: Which of the following condition is not essential to grow maize: a) High temperature b) Humidity c) Rainfall 6: Nitrogen deficiency of soil can be removed by : a) Manuring b) Applying urea​

Answer 1

Answer:

1. (b)weevils

2.(a)alcohol

3.(b)alcohol

4.(a)female anopheles mosquito

5.(b)humidity

6.(b)applying urea

Answer 2

Answer:

1: The cochineal bug, which is related to the cicada, was imported from South Africa, where it has been used in Kruger National Park to tackle prickly pear infestations. The insect sucks the sap from the plant, which ultimately kills it.

2: salt

3: Alcohol

4:Carrier of malarian causing protozoan is female anopheles mosquito.

5: For maize growth, a moderate temperature is needed. It needs well-drained fertile soil and a frost free weather. So high temperature is not required for maize growth.

6:Manuring

Explanation: