Unit notes and practice questions
Everything here is for unit 15 of the Grade 11 Agriculture textbook: what the chapter covers, the short notes, practice questions with their answers, and the lesson video where one exists.
The cards filed under this chapter on the Grade 11 Agriculture page. Open one at a time.
When you use it
Use when calculating an individual's Body Mass Index from weight and height to assess body weight categories.
Watch out
Height must be in meters before squaring. Dividing weight by height in centimeters gives an incorrect result.
Drafted from Grade 11 Agriculture, pages 235-253, then checked twice before it went up
| Form of Malnutrition | Measurement Index | Type of Undernutrition |
|---|---|---|
| Stunting | Height-for-age | Chronic or recurrent |
| Wasting | Weight-for-height | Acute or short term |
| Underweight | Weight-for-age | Acute and chronic |
When you use it
Use to identify and classify the specific forms of child undernutrition from anthropometric indices.
Watch out
Stunting reflects height deficiency relative to age, whereas wasting reflects weight deficiency relative to height.
Drafted from Grade 11 Agriculture, pages 235-253, then checked twice before it went up
| Macronutrient | Energy Yield | Recommended Daily Calorie Share |
|---|---|---|
| Carbohydrates | ||
| Lipids | ||
| Proteins |
When you use it
Use when comparing energy generation per gram and optimal daily calorie contributions of macronutrients.
Watch out
Lipids provide 9 kcal per gram, which is more than double the 4 kcal per gram provided by carbohydrates or proteins.
Drafted from Grade 11 Agriculture, pages 235-253, then checked twice before it went up
10 multiple-choice questions written against this chapter, each with its answer and the reason. Try one before you open the answer.
Question 1
Which of the following nutrients is classified as a micronutrient?
Answer: C Vitamins
Why
Vitamins and minerals are micronutrients because the body requires them in small quantities. Carbohydrates, lipids, and proteins are macronutrients needed in large amounts.
Question 2
How much energy is produced when one gram of dietary fat or oil is burned in the body?
Answer: C 9 kilocalories
Why
A gram of fat or oil yields 9 kilocalories of energy, which makes lipids a concentrated source of fuel compared to carbohydrates and proteins (4 kilocalories per gram each).
Question 3
Which pillar of food and nutrition security refers to the physical existence of sufficient quantities of food from home production or local markets?
Answer: A Food availability
Why
Availability refers to having sufficient quantities of appropriate food physically existing, whether produced on the farm or bought at markets.
Question 4
Which of the following is a water-soluble vitamin that is not stored in the body and must be eaten regularly?
Answer: B Vitamin C
Why
Vitamins B and C are water-soluble vitamins. Vitamins A, D, E, and K are fat-soluble vitamins that can be stored in the body.
Question 5
Why are proteins from plant sources such as beans and grains described as incomplete proteins?
Answer: B They do not contain all the 20 amino acids required by the body
Why
Plant proteins are considered incomplete because they do not contain all 20 amino acids needed by the human body, unlike complete proteins found in animal products.
Question 6
Which of the following is categorized as a major mineral with a Recommended Dietary Allowance (RDA) greater than 150 mg/day?
Answer: C Calcium
Why
Calcium, magnesium, phosphorus, and potassium are major minerals (RDA greater than 150 mg/day). Iron, zinc, selenium, and manganese are trace minerals.
Question 7
In the standard classification of food groups, where do starchy roots such as cassava, sweet potato, and false banana (enset) belong?
Answer: B Staples
Why
Staples include cereal grains (like teff, maize, barley, and sorghum) as well as starchy roots (such as false banana, sweet potato, and cassava) and starchy fruits like banana.
Question 8
A child who is very thin for their height and has a weight-for-height below negative two standard deviations (<-2 SD) is suffering from which condition?
Answer: B Wasting
Why
Wasting is an indicator of acute or short-term undernutrition where a child is too thin for their height (weight-for-height <-2 SD). Stunting refers to being short for one's age.
Question 9
A farmer in Arsi has a body weight of 60 kg and a height of 2.0 meters. What is this farmer's Body Mass Index (BMI), and what is their weight status?
Answer: A BMI = 15.0 kg/m<sup>2</sup>; thin or underweight
Why
BMI is calculated as weight divided by height squared: 60 / (2.0 x 2.0) = 60 / 4 = 15.0 kg/m2. A BMI below 18.5 is categorized as thin or underweight.
Question 10
According to the classification of causes of malnutrition, which of the following is considered an underlying cause?
Answer: C Water Access, Sanitation and Hygiene (WASH) practices
Why
WASH practices, household food insecurity, and poor care practices are underlying causes. Diseases and lack of food intake are immediate causes, while political and financial conditions are basic causes.
The app holds 12 questions on this unit, marked as you go. These are the first 10.
Unit 15 runs from page 232 to page 250 of the Ministry of Education edition.
Ministry of Education edition, English, 270 pages
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