Ch10 Sensing the Environment

Question 1

Detecting and responding to changes in the environment allows living things to?

Answer 1

1. Find mates
2. Find food
3. Find shelter
4. Escape from danger

Question 2

Various changes in the environment are called

Answer 2

stimuli/ stimulus(singular)

Question 3

How are senses produced?

Answer 3

1. In specialized cells or receptors in our sense organs. When they detect simuli, they produce signals and signals are sent through nerves to the brain.
2. The brain interprets the signals and produce senses.

Question 4

What are the stimuli detected and senses produced?
1. eye
2. ear
3. nose
4. tongue
5. skin

Answer 4

Stimuli detected senses produced
1. light sight
2. sound hearing
3. chemicals in air smell
4. chemicals i food taste
5. touch, pain, touch, pain, pressure,
pressure, heat, cold
temperature

Question 5

List out three structures at outer eye and their functions

Answer 5

1. Eyebrow
   directs sweat away from the eyes
2. Eyelash
   prevents small foreign objects from entering the eye
3. Eyelid
   - can be closed to protect the eye from dirt and bright light
   - can disperse tears to lubricate the eye’s surface