Pterothorax pertains to the winged segments of the

27. Pterothorax pertains to the winged segments of the insect’s thorax
a. no c. probably
b. yes d. not sure
28. Weeds found in temperate areas differ from the tropics because of:
29. Which among of the following weeds is sedge?
30. Weeds with complete plant parts should be collected for a herbarium because: 31. In crop production, the primary reason why weed is considered as a pest is:
a. It is able to harbor other organisms.
b. It is significantly lower the quantity and quality of products
c. It produces seeds and vegetative propagules.
d. It annoys human
32. The primary propagule for reproduction of Imperata cylindrical is:
33. Cockroaches belong to this insect order
34. Houseflies and mosquitoes are
35. Annual seeds are known to be present in the farm every season in spite of good
control measure because:
a. They happen to thrive there
b. They have enormous amount of seeds in the soil
c. Their seeds are not dormant
d. They have vegetative propagules in the soil
36. Spodoptera litura is a pest of
37. Bactrocera dorsalls is a pest because of
38. Insects became pests because of