List the ways in which living things and non-living things respond to external stimuli.
Answers
Answer:
Explanation:
Living things respond to stimuli and adjust themselves to maintain balance. For example,
1. When the sun gets too bright, our pupils get smaller.
2. When it is hot outside, we start sweating to cool ourself down. Our body absorbs information from the outside and keeps us safe.
3. If we hear a loud crash at night, we are suddenly woken up and our heart starts beating faster, and pumps more blood to our brain. This wakes up our brain and makes sure we are alert.
4. If we eat something bitter we probably immediately decide that we don't want that taste in our mouth. We spit it out, then maybe drink some water to help wash out the taste. Perhaps we will eat something sweet to get rid of the bitterness, also.
5. Venus fly traps respond to touch by closing their leaf "mouths". That's because the stimulus tells them that there might be food, like an insect, that has landed in their mouth.
6. If an opossum is suddenly startled, it will respond by 'playing dead'. The opossum has a physical response that causes the animal to basically lose consciousness. This makes predators think the opossum is dead and bad tasting.
7. If a single-celled bacterium is moving, and its receptor picks up the presence of a dangerous chemical, the bacterium will change directions, moving away from the danger.