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The diagram below shows the alimentary canal of a farm animal - NSC Agricultural Sciences - Question 2 - 2021 - Paper 1
Question 2
The diagram below shows the alimentary canal of a farm animal. Refer to the diagram to motivate the answer to QUESTION 2.1.1. Physical and chemical digestion in th... show full transcript
Worked Solution & Example Answer:The diagram below shows the alimentary canal of a farm animal - NSC Agricultural Sciences - Question 2 - 2021 - Paper 1
Step 1
Step 2
Refer to the diagram to motivate the answer to QUESTION 2.1.1.
Answer
The pig possesses a simple stomach, which facilitates more straightforward digestion processes compared to ruminant animals. This is evident in the diagram as it illustrates a basic, streamlined alimentary canal consistent with the pig's digestive system.
Step 3
Justify the statement that physical and chemical digestion takes place in the mouth of the farm animal named in QUESTION 2.1.1.
Answer
In the mouth, physical digestion occurs as food is mechanically broken down by the teeth into smaller pieces. This increases the surface area for enzymes to act. Chemically, salivary amylase in saliva starts the breakdown of starches into maltose, facilitating further digestion.
Step 4
Step 5
Identify the part in the alimentary canal of ruminant farm animals that corresponds to D in the diagram above in terms of functioning.
Answer
The part of the alimentary canal in ruminant animals that corresponds to D is the Abomasum, which functions similarly to the stomach of non-ruminants, where active digestion occurs.