Monday ReviewMarch 18, 2013

We see grasshoppers eating plants, frogs eating grasshoppers, snakes eating frogs, and hawks eating snakes. What do we call this?

A. a feeding cycleB. a food chainC. an eating chainD. a meal cycle

What is an example of an instinct?

A. a dog catching a stickB. a horse performing at a horse showC. a bird feeding its youngD. a student doing homework

Why do fish and frogs lay so many eggs in a pond?

A. many fish and tadpoles swim awayB. many eggs and young are eaten by other animalsC. fish and frogs grow too slowlyD. there are too many fish and frogs

What are organisms that make their own food called?

A. consumersB. producersC. omnivoresD. predators

• Animals and plants need each other. Which statement about their mutual needs is NOT correct?

A. Animals need carbon dioxide, and plants need oxygenB. Animals give off carbon dioxide needed by plantsC. Plants give off oxygen needed by animalsD. Animals need oxygen, and plants need carbon dioxide

What do you call the organisms at the beginning of every food chain?

A. producersB. consumersC. herbivoresD. carnivores

When plants make their own food, they add what gas to the atmosphere?

A. NitrogenB. Carbon dioxideC. OxygenD. Hydrogen