Why don't protists (eg. sponges) need circulatory systems? Question 12 options: None of their cells are in contact with their externl environment so that waste can not diffuse out of their bodies. All of their cells are in contact with their external environment so that nutrients and oygen can diffuse into cells. This is a misleading question because all animals have circulatory systems. They are such simple animals that they don't need oxygen.

Why don't protists (eg. sponges) need circulatory systems? Question 12 options: None of their cells are in contact with their externl environment so that waste can not diffuse out of their bodies. All of their cells are in contact with their external environment so that nutrients and oygen can diffuse into cells. This is a misleading question because all animals have circulatory systems. They are such simple animals that they don't need oxygen.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter28: Invertebrates

Section: Chapter Questions

Problem 3VCQ: Figure 28.45 Which of the following statements about insects is false? Insects have both dorsal and...

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This image is a model that shows 3 different sized cells. The yellow area of each square is the part of the cell where oxygen is able to easily get to through the cell membrane. Use specific information from this diagram to explain why even large organisms (like humans) are made out of many smaller cells. tv MacBook Air DII DD 888 80 F3 F6 F4 & @ # %24 7 2 3 4 Y U P W E R D F G H J K L <. C V command opti nand .. .- -の

This image is a model that shows 3 different sized cells. The yellow area of each square is the part of the cell where oxygen is able to easily get to through the cell membrane. Use specific information from this diagram to explain why even large organisms (like humans) are made out of many smaller cells. stv MacBook Air DII 80 888 F7 F3 F4 # 2$ 3 4 5 8 9 Y E F J K L く C V command optin ... . つ B

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	None of their cells are in contact with their externl environment so that waste can not diffuse out of their bodies.
	All of their cells are in contact with their external environment so that nutrients and oygen can diffuse into cells.
	This is a misleading question because all animals have circulatory systems.
	They are such simple animals that they don't need oxygen.