Page 1 - 3. Home_assignment_I_(Obj &_Sub)_Crop_protection_management

SAI International School
Subject- Biology, Class- IX
Chapter- Improvement in Food Resources
Subtopic- Crop Protection Management
Module- 17
Home Assignment – I (Objective& Subjective)

Objective (MCQ)
1. Cyperinus and Parthenium are types of -
a) Diseases
b) Pesticides
c) Weeds
d) Pathogens

2. Consider the following statements about weeding and identify the incorrect one.
a) Weeding is best done during tilling itself.
b) Weeding is the process of growing weed.
c) Weeding is the process of removal of weeds.
d) Weeding is usually done manually or by using weedicides.

3. Which of the following is used to preserve food grains at home?
a) Spinach leaves
b) Curry leaves
c) Neem leaves
d) Tulsi leaves

4 Weeds are controlled by chemicals called _________.
a) Pesticides
b) Fungicides
c) Weedicides
d) Insecticides

5 Which of the following is the best method to control plant diseases?
a) The selection of disease resistant varieties
b) The introduction of disease resistant varieties
c) The breeding of permanent resistant varieties
d) Biological control

6 Which of the following is not an organic method used to control weeds?
a) Proper seed beds
b) Weedicides
c) Intercropping
d) Crop rotation

7 Which of these methods is used to kill pests?
a) Retting