Multicellular Organism - Humans and Worms

What is a multicellular organism?

• An organism with only one cell

• An organism composed of more than one cell

• An organism with no cells

• An organism with only nerve cells

What are the four main types of tissues in humans?

• Muscle, brain, connective, epithelial

• Muscle, nervous, connective, epithelial

• Muscle, bone, nerve, skin

• Skin, bone, hair, muscle

Why do muscle cells have more mitochondria than other cells?

• To produce energy for movement

• To store extra oxygen

• To help the body digest food

• To carry nutrients in the blood

How do worms breathe?

• Using lungs

• Through their skin via diffusion

• Using gills

• By absorbing water

Why do worms come out of the soil on rainy days?

• They are looking for food

• The soil becomes too wet for them to stay underground

• They need sunlight

• They are escaping predators

What process allows oxygen to enter a worm’s cells?

• Photosynthesis

• Diffusion

• Active transport

• Osmosis

What happens to nutrients in a worm’s digestive system?

• They are excreted without absorption

• They are absorbed through the intestinal walls into the bloodstream

• They are stored in the skin

• They are broken down in the stomach but not absorbed

What does the intestinal wall of a worm contain that helps absorb nutrients?

• Mitochondria

• Blood vessels

• Nerve endings

• Connective tissues

Which of the following is TRUE about earthworms and their environment?

• They avoid damp environments

• They require a wet environment to survive

• They thrive in dry soil

• They use sunlight for energy

Why is the structure of a cell related to its function?

• All cells look the same regardless of their task

• Cells must have a specific shape to perform their task effectively

• Function is independent of cell structure

• Cells do not have any specific function