Response to Stimuli

Q.

Give three examples of response to stimuli.

Q.

Plants change their direction in response to the stimulus of light.

1. True

2. False

Q.

What is the stimulus in case of a pin-prick on our finger?

1. Touch

2. Light

3. Water

4. Gravity

Q. When we touch Mimosa, our touch acts as ______ for the plant and it closes its leaves in return.

1. response
2. stimulus
3. adaptation
4. acclimatisation

Q. In reflex actions, the signals do not travel up to the . The shows the pathway through which the reflex action occurs.

1. brain
2. conditioned reflexes
3. reflex arc
4. heart

Q. Sunlight is the stimulus and the bending of the plant towards it is the ______

1. response
2. impulse
3. base
4. instinct

Q. A plant in a pot dies out if not watered for few days because water is necessary for photosynthesis.

1. False
2. True

Q. Energy is required by every living organism to carry out different activities.

1. False
2. True

Q. Elimination of waste products and toxins from the body is called _____.

1. reproduction
2. response
3. excretion
4. growth

Q. Select the stimulus to which an organism responds to.

1. Touch
2. Light
3. Heat
4. Cold
5. Sound
6. Smell
7. Soil
8. Sky

Q. Sunlight is the stimulus and the bending of the plant towards it is the ______

1. impulse
2. response
3. instinct
4. base

Q.

Shreya touched a hot kettle and quickly pulled her hand away. Which characteristic is proved by the given statement?

1. Reproduction

2. Response to stimuli

3. Growth

4. Respiration

Q. Select the stimulus to which an organism responds to.

1. Touch
2. Light
3. Heat
4. Cold
5. Sound
6. Smell
7. Soil
8. Sky