The cow is said to be a ruminant - Leaving Cert Agricultural Science - Question b - 2007
Question b
The cow is said to be a ruminant.
(i) Explain the underlined word.
(ii) Briefly explain what happens in the rumen.
(iii) Name a part of the ruminant digestive system... show full transcript
Worked Solution & Example Answer:The cow is said to be a ruminant - Leaving Cert Agricultural Science - Question b - 2007
Step 1
Explain the underlined word.
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Answer
A ruminant is an animal that has a special stomach structure, specifically a stomach with four compartments, which allows it to efficiently digest fibrous plant materials. This process involves the regurgitation of food, known as 'cud', which is then re-chewed to aid in digestion.
Step 2
Briefly explain what happens in the rumen.
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Answer
In the rumen, food undergoes fermentation facilitated by microbial populations, including bacteria and protozoa. These microorganisms break down fibrous material and cellulose, converting it into simpler compounds. This process is crucial for the digestion of tough plant material and aids in nutrient absorption.
Step 3
Name a part of the ruminant digestive system where food is absorbed.
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Answer
Food is absorbed in the small intestine, also known as the ileum.
Step 4
Name two digestive enzymes.
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Answer
Two digestive enzymes are:
Amylase - which helps in the breakdown of carbohydrates.
Lipase - which aids in the digestion of fats.
Step 5
Name the parts labelled A, B and C.
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Answer
A - enamel
B - dentine
C - jaw or bone
Step 6
There are different types of tooth in the mouth of a pig. Name two types.
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Answer
Two types of teeth in the mouth of a pig are:
Incisor
Premolar
Step 7
Give a function for each of the teeth you have named.
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Answer
Incisor - Used for cutting food.
Premolar - Used for grinding food.
Step 8
Give the dental formula of a pig.
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Answer
The dental formula of a pig is:
2/3 1/1 4/4 3/3
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