Stimuli and Response

Multiple Choice

Which of the following correctly represents the sequence from the smallest part to the whole organism?

• Organelle → Cell → Organ → System → Organism

• Cell → Organelle → Organ → System → Organism

• Organ → Cell → System → Organelle → Organism

• System → Organ → Cell → Organelle → Organism

Multiple Choice

Which of the following best defines a stimulus?

• Any alteration in an organism's environment that triggers a response.

• A reaction to a change in the environment.

• A type of internal response.

• A positive reaction to an external factor.

Open Ended

Explain the difference between a positive and a negative response, and provide an example of each.

Multiple Choice

What are the two main categories of stimuli?

• Internal and External

• Positive and Negative

• Physical and Chemical

• Direct and Indirect

Multiple Choice

Which of the following is NOT a common internal stimulus?

• Germs

• Dehydration

• Sunlight

• Fatigue

Fill in the Blanks

A stimulus that originates from outside an organism is called an

stimulus.

Multiple Select

Which of the following are examples of internal stimuli?

• A giraffe feels thirsty and drinks water.

• A snake lunges at a rabbit, causing the rabbit to flee.

• You develop a fever due to an infection.

• A dog senses the warmth of the sun and seeks shade.

Multiple Choice

What is phototropism, and how do plants demonstrate this response?

• The movement of plants toward water; plants bend toward moisture

• The movement of plants toward light; plants lean or grow toward a light source

• The movement of plants in response to touch; plants wrap around objects

• The movement of plants against gravity; stems grow upward

Multiple Select

Which of the following are examples of tropisms in plants?

• Roots growing toward water

• Leaves growing toward light

• Stems growing away from gravity

• All of the above

Open Ended

Explain the difference between positive and negative tropism, and provide an example of each from the types of tropisms listed.

Fill in the Blanks

Fill in the blank: The outward pressure that keeps plant cells firm and helps prevent wilting is called

.

Open Ended

What caused the plant to wilt in the image, and what is the biological process behind wilting?

Multiple Choice

Match the following plant responses to the correct type of tropism: 1. Morning Glory flowers open and close based on sunlight. 2. Roots bend toward moisture. 3. Grape vine tendrils wrap around stakes. 4. Roots grow downward regardless of seed orientation.

• Phototropism, Hydrotropism, Thigmotropism, Gravitropism

• Hydrotropism, Phototropism, Gravitropism, Thigmotropism

• Thigmotropism, Gravitropism, Phototropism, Hydrotropism

• Gravitropism, Thigmotropism, Hydrotropism, Phototropism

Open Ended

Why do some goats faint?

Multiple Choice

Which of the following best describes a 'response' in animal behavior?

• How an organism reacts to a stimulus, leading to a change in behavior.

• The process of finding food in the wild.

• The way animals communicate with each other.

• A learned behavior passed from parent to offspring.

Multiple Choice

Which of the following pairs correctly matches a stimulus with its response?

• Feeling hungry – eating food

• Dog feels hot – puts on a jacket

• Rabbit gets frightened – starts to rain

• You feel cold – begin panting

Open Ended

Explain the difference between innate and learned behaviors in animals, providing an example of each.

Fill in the Blanks

Animal behaviors can be

, like a baby bird chirping for food, or learned through experience, like a dog performing a trick for a reward.

Multiple Choice

What is the main purpose of animals responding to environmental stimuli?

• To survive and adapt by finding food, avoiding danger, and reproducing.

• To entertain humans with tricks.

• To compete for territory only.

• To communicate with other species.

Multiple Choice

Which of the following correctly represents the sequence from smallest to largest in the organization of living things?

• Organelle → Cell → Organ → System → Organism

• Cell → Organelle → Organ → System → Organism

• Organism → System → Organ → Cell → Organelle

• System → Organ → Cell → Organelle → Organism

Open Ended

How does the concept of 'cause and effect' relate to stimuli and response in plants and animals?