Question

which of the following are examples of homeostasis? select all that apply a an amoeba dividing into two daughter cells. b a bird fluffs its feathers to retain more heat on a cold day. c a person sweats to cool down while sitting outside in the sun. d bacteria moving towards sugar.

Explanation:

• Option a: Amoeba division is reproduction, not homeostasis (maintaining internal stability).
• Option b: A bird fluffing feathers to retain heat on a cold day is maintaining body temperature, an example of homeostasis.
• Option c: A person sweating to cool down in the sun is regulating body temperature, an example of homeostasis.
• Option d: Bacteria moving toward sugar is chemotaxis (response to a chemical stimulus), not homeostasis.

Answer:

b. A bird fluffs its feathers to retain more heat on a cold day.
c. A person sweats to cool down while sitting outside in the sun.