76. Which of the following is a method of weed control that involves using natural enemies, such as insects or pathogens, to control weed populations?
a) Chemical control
b) Mechanical control
c) Biological control
d) Cultural control
77. Which of the following is a method of weed control that involves changing farming practices to reduce weed populations?
a) Chemical control
b) Mechanical control
c) Biological control
d) Cultural control
78. Which of the following is a method of weed control that involves growing crops in rows or beds and leaving spaces between them for weed management?
a) Intercropping
b) Crop rotation
c) Strip cropping
d) Mulching
79. Which of the following is a term used to describe the process of improving the genetic characteristics of crop plants?
a) Crop rotation
b) Plant breeding
c) Organic farming
d) Sustainable agriculture
80. Which of the following is a method of plant breeding that involves crossing two different varieties or species of plants?
a) Hybridization
b) Self-pollination
c) Cloning
d) Mutation breeding
