Exploring Transportation in Life Forms

What is the primary function of the circulatory system in animals?

• To facilitate digestion and absorption of food.

• To provide structural support to the body.

• To transport oxygen, nutrients, hormones, and waste products throughout the body.

• To regulate body temperature through sweat.

Name the two main types of blood vessels in the circulatory system.

• Veins and lymphatics

• Arteries and veins

• Capillaries and arteries

• Arteries and capillaries

How do animals transport oxygen in their bodies?

• Animals rely on lungs only for oxygen transport.

• Oxygen is absorbed through the skin in all mammals.

• Animals use gills to transport oxygen in all species.

• Animals transport oxygen using hemoglobin in blood or through tracheae in insects.

What role does the heart play in the circulatory system?

• The heart stores excess nutrients for later use.

• The heart pumps blood, facilitating circulation of oxygen and nutrients in the body.

• The heart filters toxins from the blood.

• The heart produces hormones that regulate blood pressure.

Describe how nutrients are transported in animals.

• Nutrients are stored in the liver and released when needed.

• Nutrients are transported in animals via the circulatory system, where they are absorbed into the bloodstream and delivered to cells.

• Nutrients are absorbed directly through the skin into the bloodstream.

• Nutrients are transported through the lymphatic system only.

What is the function of xylem in plants?

• To store food and nutrients for the plant.

• To protect the plant from pests and diseases.

• The function of xylem in plants is to transport water and minerals and provide structural support.

• To facilitate photosynthesis in leaves.

How does phloem contribute to plant transport?

• Phloem stores energy in the form of starch.

• Phloem is responsible for photosynthesis in leaves.

• Phloem absorbs water from the soil.

• Phloem transports nutrients and sugars throughout the plant.

Explain the process of diffusion in living organisms.

• Diffusion is the active transport of molecules against their concentration gradient.

• Diffusion is the process of energy transfer in cells.

• Diffusion is the movement of molecules from high to low concentration across cell membranes in living organisms.

• Diffusion occurs only in solid materials, not in living organisms.

What is osmosis and how does it differ from diffusion?

• Osmosis and diffusion are the same process; both involve the movement of solutes.

• Osmosis is the movement of molecules across a membrane; diffusion is the movement of water from low to high concentration.

• Osmosis is the movement of gases across a membrane; diffusion is the movement of water molecules.

• Osmosis is the movement of water across a membrane; diffusion is the movement of molecules from high to low concentration.

How do plants absorb water from the soil?

• Plants absorb water through their leaves during photosynthesis.

• Plants absorb water from the soil through their roots via osmosis.

• Plants use their stems to draw water from the soil.

• Plants absorb water through their flowers in the spring.