BIOLOGICAL CLASSIFICATION
KINGDOM ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they digest food
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they breathe through gills
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they use legs to move
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they have skeleton
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Detailed explanation-1: -Sea sponges are one of the world’s simplest multi-cellular living organisms. Yes, sea sponges are considered animals not plants. But they grow, reproduce and survive much as plants do. They have no central nervous system, digestive system or circulatory system – and no organs!
Detailed explanation-2: -Answer and Explanation: Sponges are classified as animals because they don’t make their own food. In order for an organism to be classified as a plant, it must be able to create its own food through photosynthesis. Sponges are consumers, not producers, so they aren’t plants, they are animals.
Detailed explanation-3: -Sponges feed by straining food particles from water. As water enters a sponge, Page 2 it carries tiny organisms such as bacteria and protists. Collar cells on the inside of the central cavity trap these food particles and digest them. Sponges are very efficient at removing food particles from water.
Detailed explanation-4: -A sponge is, in essence, a multicellular organism with no organs or tissues, but with specialized cells, which distinguishes it from small multicellular protists.