Concept explainers
Introduction:
Animal nutrition focuses on the dietary needs of animals, primarily those in agriculture and food production, but also in zoos, aquariums, and wildlife management. There are seven major classes of nutrients: carbohydrates, fats, fibre, minerals, proteins, vitamins, and water.
Answer to Problem 1TY
The correct answer is option (d) digestion.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d) digestion. Digestion is the process of chemical breakdown of ingested food into simple molecules that can be absorbed by the cells of the digestive tract. The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation. The first of these processes, ingestion, refers to the entry of food into the alimentary canal through the mouth. So, the correct answer is option (d).
Explanation for incorrect answer:
Option (a) absorption. Absorption is the process where ions, water, and small molecules diffuse or are transported from the digestive cavity into an animal’s circulatory system or body fluids. So, this is an incorrect option.
Option (b) secretion. Secretion is the process by which substances are produced and discharged from a cell, gland, or organ for a particular function in the organism or for excretion. So, this is an incorrect option.
Option (c) ingestion. Ingestion is the act of taking food into the body via a structure such as a mouth. So, this is an incorrect option.
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Chapter 37 Solutions
Principles of Biology
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