ANIMAL PHYSIOLOGY
DIGESTION IN DIFFERENT ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The simplest animals, such as sponges, digest food inside specialized cells that pass nutrients to other cells by diffusion.
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Process in which food is broken down outside cells in a digestive system and then absorbed.
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Digestive chamber with a single opening
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Detailed explanation-1: -During extracellular digestion, food is broken down outside the cell either mechanically or with acid by special molecules called enzymes. Then the newly broken down nutrients can be absorbed by the cells nearby. Humans use extracellular digestion when they eat.
Detailed explanation-2: -extracellular digestion: Extracellular digestion is a process in which animals feed by secreting enzymes through the cell membrane onto the food. The enzymes break the food into molecules small enough to be taken pass through the cell membrane into the cell.
Detailed explanation-3: -Extracellular digestion is the breakdown of dietary material into simple compounds outside the body. Food is broken down outside the body with the help of hydrolytic enzymes secreted by the organism in this process.
Detailed explanation-4: -In extracellular digestion, the materials or food particles are broken down chemically into smaller components outside the cell or onto the digestive system spaces. For example, fungi feed on their food by secreting digestive enzymes to digest their food externally, which they later absorb.
Detailed explanation-5: -Complete answer: Animals eat by secreting enzymes across the cell membrane onto their food in a process known as extracellular digestion.