Science CBA 4th Grade - Pine Needle Adaptation

What is the benefit to the plant of the waxy coating on the needles?

• The wax attracts bees or other pollinators.

• The wax takes in water from the air.

• The wax takes up sunlight for making food.

• The wax slows the loss of water from the needle.

Classify each trait of a garden plant as inherited or acquired. The type of vegetable that the plant grows:

• Inherited

• Acquired

Classify each trait of a garden plant as inherited or acquired. A hole in a vegetable from the bite of a rabbit:

• Inherited

• Acquired

Classify each trait of a garden plant as inherited or acquired. The green color of the leaves:

• Inherited

• Acquired

Classify each trait of a garden plant as inherited or acquired. Stains on the leaves or vegetables from molds or insects:

• Inherited

• Acquired

Cari is investigating how plants use the process of photosynthesis to make their own food. For Cari to observe photosynthesis, what three things must the plants receive?

• sunlight

• oxygen

• carbon dioxide

• water

• sugars

What is the role of decomposers in the cycling of matter through food webs?

• Decomposers use sunlight to make food for consumers.

• Decomposers are herbivores that eat plants and plant parts.

• Decomposers return nutrients to the soil for plants to use again.

• Decomposers release the oxygen that animals need to survive.

What is the role of plankton in the food web?

• Plankton are decomposers that return nutrients to the water.

• Plankton are consumers that use the Sun’s energy to make food.

• Plankton are consumers that compete with animals for food.

• Plankton are producers that provide food for all other members of the food web.

Observe the diagram of the food web. The diagram shows several pathways for the flow of energy through the ecosystem. Which member of the food web receives energy only from producers?

• D) Snake

• B) Fox

• E) Frog

• A) Hawk

• C) Rabbit

Peri is revising the diagram of the food web shown here. She plans to add two other organisms or objects to show more paths for the flow of energy. Which would be the MOST useful additions? Select TWO correct answers.

• the Sun

• a pond or lake

• rain clouds

• mushrooms or other decomposers