Understanding Responses to Stimuli

What does an eagle use to find fish?

• Its keen sense of sight

• Its hearing

• Its sense of smell

• Its sense of touch

What is the eagle's response to seeing a fish?

• It calls other eagles

• It swoops down to catch it

• It sings

• It waits for the fish to jump

What triggers an organism's reaction according to the video?

• A stimulus

• A response

• A habit

• A reflex

What is phototropism?

• Growth towards gravity

• Growth towards water

• Growth towards sunlight

• Growth away from light

What do plants do in response to sunlight?

• They turn their heads to follow the sun

• They close their leaves

• They grow flowers

• They shed leaves

What is geotropism?

• Growth in response to gravity

• Movement towards light

• Movement away from predators

• Growth in response to water

What guides roots to grow downwards?

• Thermotropism

• Geotropism

• Hydrotropism

• Phototropism

What guides stems to grow upwards?

• Hydrotropism

• Thigmotropism

• Geotropism

• Phototropism

What is the response of a Venus fly trap to an insect landing on it?

• It closes its leaves

• It moves away

• It changes color

• It releases the insect

How does a rabbit react upon sensing a predator?

• It attacks

• It hides

• It plays dead

• It runs to escape