STD IV SCIENCE ONLINE NECTA EXAM REVIEW FOR YEAR 2020
OFFICE OF THE PRESIDENT REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT
STANDARD FOUR NATIONAL ASSESMENT
SCIENCE AND TECHNOLOGY - 2020
1. Answer items (i) - (v) by choosing the correct answer and writing its letter in the space provided.
(i) Which of the following foods are rich in vitamins and proteins?
milk, meat and fish
tomato, onions and carrots
mangoes, fish and carrots
fish, rice and maize
(ii) Which of the following foods gives the body energy?
(iii) Which nutrients are found in milk?
Vitamins and proteins
Fats and vitamins
carbohydrates and fats
Proteins and fats
(iv) What is the function of foods rich in protein nutrients?
Giving the body heat and energy
Building and repairing body
Giving the body energy and minerals
Building and protecting the body.
(v) All the following diseases are caused by eating contaminated food except?
2. Answer questions (i) - (v) by matching actions that lead to environmental destruction/degradation in List A with the meanings of these actions in List B. Write the letter of the correct answer in your exercise book.
(i) Dumping chemicals and waste in dams and rivers.
(ii) Keeping a large number of animals in a small area.
(iii) The result of water air and soil pollution
(iv) Dumping chemicals and waste in the soil
(v) Increased levels of dust and smoke in the atmosphere
4. You have been given steps A - E that are involved in the digestion process of food in the digestive system. Arrange these steps by writing the sentences given in their correct order in the spaces provided in the table below:
Faeces leave the body through the anus.
The food is digested and absorbed in the small intestine.
The food enters the mouth.
The food passes through the oesophagus to reach the stomach.
Water and mineral salts are absorbed in the large intestine leaving the undigested waste to enter the rectum.