Agricultural science junior waec exam questions and answers

Agricultural science junior waec exam questions and answers

Here are 20 questions with options and answers:

Which of the following is not a primary factor affecting crop growth?

a) Soil

b) Water

c) Light

d) Air

Answer: d) Air

What is the primary function of the roots in a plant?

a) Photosynthesis

b) Absorption of water and nutrients

c) Transpiration

d) Reproduction

Answer: b) Absorption of water and nutrients

Which of the following is a cereal crop?

a) Tomato

b) Wheat

c) Potato

d) Carrot

Answer: b) Wheat

What is the process of transferring pollen from the anther to the stigma called?

a) Germination

b) Fertilization

c) Pollination

d) Photosynthesis

Answer: c) Pollination

Which gas is essential for photosynthesis in plants?

a) Oxygen

b) Carbon dioxide

c) Nitrogen

d) Hydrogen

Answer: b) Carbon dioxide

The scientific name for the common potato is:

a) Solanum tuberosum

b) Triticum aestivum

c) Zea mays

d) Brassica oleracea

Answer: a) Solanum tuberosum

What is the term for the process of raising young animals until they are old enough to be sold or used for other purposes?

a) Grazing

b) Feeding

c) Rearing

d) Milking

Answer: c) Rearing

Which of the following is not a method of plant propagation?

a) Grafting

b) Budding

c) Pollination

d) Cutting

Answer: c) Pollination

In agriculture, what does the acronym "FAO" stand for?

a) Farming and Agriculture Organization

b) Food and Agriculture Organization

c) Federation of Agricultural Organizations

d) Farmers' Assistance Office

Answer: b) Food and Agriculture Organization

What is the primary function of the plough in farming?

a) Harvesting

b) Planting seeds

c) Turning and breaking soil

d) Irrigation

Answer: c) Turning and breaking soil

Which of the following is a warm-season crop?

a) Wheat

b) Rice

c) Maize

d) Barley

Answer: c) Maize

What is the process of removing undesirable plants from a crop field called?

a) Sowing

b) Weeding

c) Harvesting

d) Irrigating

Answer: b) Weeding

Which of the following is a livestock disease?

a) Rust

b) Malaria

c) Foot-and-mouth disease

d) Erosion

Answer: c) Foot-and-mouth disease

What is the main purpose of adding fertilizer to soil?

a) Providing shade to plants

b) Improving soil texture

c) Supplying essential nutrients to plants

d) Controlling pests

Answer: c) Supplying essential nutrients to plants

Which farming system involves the cultivation of crops and the raising of animals on the same piece of land?

a) Monoculture

b) Agroforestry

c) Crop rotation

d) Mixed farming

Answer: d) Mixed farming

Which of the following is a greenhouse gas that contributes to global warming?

a) Oxygen

b) Carbon dioxide

c) Nitrogen

d) Argon

Answer: b) Carbon dioxide

What is the term for the process of breaking down organic matter into compost?

a) Fermentation

b) Photosynthesis

c) Decomposition

d) Germination

Answer: c) Decomposition

Which of the following is a common method of controlling pests in agriculture?

a) Irrigation

b) Crop rotation

c) Pesticide application

d) Pruning

Answer: c) Pesticide application

What is the main source of energy for photosynthesis in plants?

a) Sunlight

b) Soil nutrients

c) Water

d) Wind

Answer: a) Sunlight

Which of the following is a leguminous crop?

a) Cassava

b) Soybean

c) Coffee

d) Cotton

Answer: b) Soybean