2020 NECO Agricultural Science Past Questions

What is the total surface area of a cylinder with radius 2cm and height 1.5cm, correct to 2 significant figures?

1. A.440cm$^2$
2. B.220cm$^2$
3. C.88cm$^2$
4. D.44cm$^2$
5. E.22cm$^2$✓ Correct

A system of government by which people held land and received protection in return for giving work or military help is called

1. A.A. Capitalism✓ Correct
2. B.B. Communalism
3. C.C. Democracy
4. D.D. Feudalism
5. E.E. Oligarchy

Bacteria; which derive energy by oxidizing certain inorganic compounds, are said to be

1. A.Chemosynthetic✓ Correct
2. B.Holozoic
3. C.Parasitic
4. D.Photosynthetic
5. E.Saprophytic

How far from a hill should a boy stand to hear the echo of his clap 1 .6s later? [Speed of sound in air is 340$ms^{-1}$]

1. A.186m
2. B.272m✓ Correct
3. C.544m
4. D.1088m
5. E.2000m

What part of the camera corresponds to the iris of the eye?

1. A.diaphragm
2. B.film
3. C.focusing ring
4. D.lens✓ Correct
5. E.shutter

An aggregate of people organized to promote some objectives they have in common can be described as ........ group.

1. A.A. electoral
2. B.B. pressure
3. C.C. political✓ Correct
4. D.D. professional
5. E.E. social

The function of ribosome is

1. A.excretion of waste✓ Correct
2. B.protein synthesis
3. C.reproduction
4. D.respiration
5. E.secretion of hormones.

Choose from the options lettered A - E the one that contains the sound segment represented by the given phonetic symbol /θ/

1. A.tank
2. B.teethe✓ Correct
3. C.thank
4. D.they
5. E.this

The problem of “how to produce” in any economy is solved by

1. A.A. adopting the least cost method of production✓ Correct
2. B.B. combining capital and labour intensive methods of production
3. C.C. employing the services of a manager
4. D.D. using capital intensive method of production
5. E.E. using labour intensive method of production

Brain tumors can be located by using an isotope of

1. A.carbon - 14
2. B.iodine 131
3. C.technetium 99
4. D.uranium235✓ Correct
5. E.uranium 238