Knowee
Questions
Features
Study Tools

What best describes why the appearance of extracellular digestion in cnidarians was an important step in the evolution of animals?Multiple choice question.It allowed cnidarians to develop nematocytes for the capture of prey.It allowed cnidarians to eat food that is larger than an individual cell.It allowed the cnidarians to be much bigger than any previous animal.It allowed cnidarians to use the gastrovascular space for waste discharge.

Question

What best describes why the appearance of extracellular digestion in cnidarians was an important step in the evolution of animals?Multiple choice question.It allowed cnidarians to develop nematocytes for the capture of prey.It allowed cnidarians to eat food that is larger than an individual cell.It allowed the cnidarians to be much bigger than any previous animal.It allowed cnidarians to use the gastrovascular space for waste discharge.

...expand
🧐 Not the exact question you are looking for?Go ask a question

Solution

The best answer is: "It allowed cnidarians to eat food that is larger than an individual cell."

Here's why:

  1. Extracellular digestion is a process where food is broken down outside the cells in a compartment within the organism, such as a digestive tract. This is different from intracellular digestion, where food is taken into cells and broken down.

  2. In the case of cnidarians, which include creatures like jellyfish and sea anemones, they have a simple sac-like gut where extracellular digestion occurs. This is known as the gastrovascular cavity.

  3. The evolution of extracellular digestion allowed cnidarians to consume and digest food that is larger than an individual cell. This is a significant evolutionary step because it means these organisms can gain more energy from a wider variety of food sources, which can support larger body sizes and more complex body systems.

  4. While cnidarians do have nematocytes (specialized cells for capturing prey) and they do use the gastrovascular space for waste discharge, these are not directly related to the evolution of extracellular digestion. And while extracellular digestion does allow for larger body sizes, it's not accurate to say that it allowed cnidarians to be much bigger than any previous animal.

This problem has been solved

Similar Questions

Check all of the characteristics listed below that apply to the cnidarian life cycle.Check All That ApplyExtracellular digestion of foodExtracellular digestion of foodUse nematocysts to capture foodUse nematocysts to capture foodUse choanocytes to capture foodUse choanocytes to capture foodPolyp and/or medusa body forms

Which of the following statements about extracellular digestion is NOT true?Multiple choice question.It requires a gastrovascular cavity.It is the main method of digestion used by sponges.It is employed by cnidarians.It allows ingestion of larger food particles than intracellular digestion.

Which of the following explains why cells that contained mitochondria-like organelles had an evolutionary advantage? Group of answer choicesThey were able to make more use of available energyThey had more DNAThey were able to photosynthesizeThey were immune to bacterial invasion.

What is the primary purpose of excretion in cellular metabolism?To produce energyTo synthesize proteinsTo remove waste by-productsTo regulate cell growth       Which of the following organisms breaks down food material outside the body before absorbing it?MammalsFungiBirdsReptiles       How do the digested substances enter Amoeba's cytoplasm?Through active transportThrough diffusionThrough facilitated diffusionThrough osmosis

Which of the following is true of Cnidarians?Multiple choice question.They have organs.They have three cell layers.They have distinct tissues.

1/1

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.