Agricultural Science questions and answers

Agricultural Science Questions and Answers

A comprehensive list of Agricultural science questions with answers to help you prepare for JAMB, WAEC, NECO, Post UTME exams.

31.

Which part of a tractor is responsible for providing power to the attached implements or machinery?

A.

Steering system

B.

Transmission

C.

Engine

D.

Hydraulic system

Correct answer is D

The hydraulic system of a tractor is responsible for providing power to the attached implements or machinery. It uses a fluid under pressure to transmit power from the tractor to the implements for various functions. The engine is the power source of the tractor, but it is the hydraulic system that transmits this power to the implements.

 

32.

Which of the following is a common by-product of farm animals?

A.

All of the above

B.

Wool

C.

Fertilizer

D.

Milk

Correct answer is A

Farm animals often produce various valuable by-products. Milk is a common by-product of dairy animals such as cows, goats, and sheep. It is a significant source of nutrition for humans and is used to produce dairy products such as cheese, butter, and yogurt. Fertilizer is another by-product that can be obtained from farm animals, specifically from their manure.

33.

What is the purpose of using a scale of preference in agricultural decision-making?

A.

To evaluate the environmental impact of farming practices

B.

To determine the most profitable crops to cultivate

C.

To allocate resources effectively among different activities

D.

To prioritize agricultural tasks based on urgency

Correct answer is C

The purpose of using a scale of preference in agricultural decision-making is to allocate resources effectively among different activities. A scale of preference is a tool used to prioritize and rank various options or choices based on their relative importance or value. In agriculture, farmers often face limited resources such as land, labor, capital, and time.

 

34.

What is the primary purpose of storage facilities in agriculture?

A.

Offering a workspace for farm labourers

B.

Storing and preserving harvested crops

C.

Providing shelter for farm animals

D.

Housing agricultural machinery and equipment

Correct answer is B

The primary purpose of storage facilities in agriculture is to store and preserve harvested crops. These facilities, such as warehouses, silos, or cold storage units, are designed to protect harvested crops from environmental factors, pests, and diseases. They provide a controlled environment that helps maintain the quality, nutritional value, and market value of the stored crops.

 

35.

What is the primary objective of agricultural research?

A.

Developing new farming technologies

B.

Increasing crop diversity

C.

Promoting organic farming practices

D.

Enhancing agricultural productivity and sustainability

Correct answer is D

The primary objective of agricultural research is to enhance agricultural productivity and sustainability. Agricultural researchers work to develop innovative techniques, technologies, and practices that improve crop yields, reduce environmental impact, and ensure the long-term viability of agricultural systems.

36.

Which of the following is an important aspect of livestock management in agriculture?

A.

Irrigation scheduling

B.

Fertilizer application rates

C.

Animal health and welfare

D.

Crop rotation techniques

Correct answer is C

Animal health and welfare is an important aspect of livestock management in agriculture. Livestock managers and farmers are responsible for ensuring the well-being of the animals under their care. This includes providing proper nutrition, appropriate housing and shelter, disease prevention and control measures, and veterinary care.

 

37.

What is the primary focus of animal husbandry in agriculture?

A.

Veterinary care for domestic pets

B.

Protection of wildlife habitats

C.

Breeding and management of farm animals

D.

Crop cultivation for livestock feed

Correct answer is C

The primary focus of animal husbandry in agriculture is the breeding and management of farm animals. Animal husbandry involves various practices related to the care, breeding, and rearing of domesticated animals for agricultural purposes.

38.

What is the process of introducing foreign genetic material into an organism called?

A.

Transcription

B.

Transformation

C.

Translocation

D.

Translation

Correct answer is B

The process of introducing foreign genetic material into an organism is called transformation. In biotechnology, transformation involves the insertion of specific genes or DNA sequences into the genome of an organism, resulting in the expression of new traits or characteristics.

 

39.

What does the term "recombinant DNA" refer to in biotechnology?

A.

DNA synthesized in a laboratory

B.

DNA replicated using polymerase chain reaction (PCR)

C.

DNA extracted from ancient fossils

D.

DNA modified to contain genes from different organisms

Correct answer is D

term "recombinant DNA" in biotechnology refers to DNA that has been modified or engineered to contain genes from different organisms. This process involves the insertion of specific genes or gene segments into the DNA of an organism, resulting in the creation of a new DNA sequence with combined genetic information.

 

40.

What happens to the price of a agricultural product when demand exceeds supply?

A.

The price fluctuates randomly

B.

The price decreases

C.

The price remains unchanged

D.

The price increases

Correct answer is D

In economics, when demand exceeds supply, it creates a shortage. The price of the product will increase until the quantity demanded is equal to the quantity supplied, a state known as equilibrium. This is because the high demand and low supply create a competitive market where buyers are willing to pay more to secure the product.