Unit notes and practice questions
Everything here is for unit 8 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 defining disease control terms and management practices.
Watch out
Quarantine applies to newly arrived healthy animals for two weeks, whereas isolation applies to separating animals that are already sick.
Drafted from Grade 11 Agriculture, pages 123-134, then checked twice before it went up
When you use it
Use when identifying diseases that can transmit from animals to humans.
Watch out
Not all infectious diseases are zoonotic. Brucellosis, anthrax, salmonellosis, and taeniasis transmit to humans, but diseases like CBPP do not.
Drafted from Grade 11 Agriculture, pages 123-134, then checked twice before it went up
| Parasite Group | Location on Host | Examples | Control Method |
|---|---|---|---|
| Endoparasites (Internal) | Blood, tissues, digestive tract | Tapeworm, roundworm, liver fluke | Deworming (e.g. piperazine), drenches |
| Ectoparasites (External) | Skin, hair, skin surface | Ticks, lice, mites, flies | Spraying, dipping with chemicals |
When you use it
Use to distinguish between internal and external livestock parasites and their control practices.
Watch out
External parasites damage skins and hides and transmit vector borne diseases like trypanosomiasis and red water.
Drafted from Grade 11 Agriculture, pages 123-134, 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 is categorized as a non-infectious animal disease?
Answer: C Rickets
Why
Rickets is a non-infectious disease caused by nutritional or environmental factors, whereas anthrax, foot and mouth disease, and Newcastle disease are infectious diseases caused by pathogens.
Question 2
What is a disease that can be transmitted from animals to human beings called?
Answer: A A zoonotic disease
Why
Diseases that can pass from animals to humans, such as anthrax and brucellosis, are known as zoonotic diseases.
Question 3
Which of the following is an example of an internal parasite (endoparasite) in farm animals?
Answer: B Liver fluke
Why
Liver flukes live inside the tissues and organs of animals, making them internal parasites (endoparasites). Ticks, lice, and mites are external parasites (ectoparasites).
Question 4
Which visible symptom is commonly observed in a sick farm animal?
Answer: C Dry muzzle and rough hair coat
Why
A sick animal often displays physical signs such as a dry muzzle, raised or rough hair coat, sunken eyes, and loss of appetite.
Question 5
A poultry farmer in Debre Zeit notices that chickens are twisting their necks, laying soft-shelled eggs, and producing watery greenish diarrhea. Which disease is most likely affecting the flock?
Answer: A Newcastle disease
Why
Newcastle disease is a viral poultry disease characterized by nervous signs like a twisted neck, leg paralysis, soft-shelled eggs, and watery greenish diarrhea.
Question 6
How can people become infected with the bacteria that cause brucellosis?
Answer: B By consuming raw or unpasteurized dairy products
Why
Brucellosis threatens human health when people ingest unpasteurized or raw dairy products coming from infected livestock.
Question 7
When bringing newly purchased farm animals into a herd, for how long should they be kept in quarantine to make sure they are not carrying diseases?
Answer: C Two weeks
Why
The textbook recommends quarantining newly arrived animals away from the existing herd for two weeks to ensure they are healthy.
Question 8
Which drug is specifically mentioned as an effective de-wormer for controlling roundworms in livestock?
Answer: A Piperazine
Why
Piperazine is a recommended de-worming drug used to expel and control roundworms in farm animals.
Question 9
Which external parasite transmits the protozoan disease trypanosomiasis to cattle?
Answer: A Tsetse fly
Why
The bite of the tsetse fly acts as a vector that transmits trypanosomes, causing trypanosomiasis in livestock.
Question 10
A farmer in Amhara region loses money at the market because sheep skins and cattle hides have severe surface damage, scabs, and hair loss. What is the primary cause of this economic loss?
Answer: B Ectoparasites attacking and irritating the skin and coat
Why
External parasites (ectoparasites) such as lice, mites, and ticks attack the animal's coat, causing skin damage and lowering the market value of hides, skins, and wool.
The app holds 12 questions on this unit, marked as you go. These are the first 10.
Unit 8 runs from page 120 to page 131 of the Ministry of Education edition.
Ministry of Education edition, English, 270 pages
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