Question

according to the scientific definition of life, which of the following objects can be classified as \alive\? select all that apply
a clouds
b a frog
c bacteria
d bark of a tree

Explanation:

To determine if an object is alive, we use the characteristics of life: cellular organization, metabolism, growth, reproduction, response to stimuli, etc.

• Clouds: Are non - living (composed of water droplets, no life - defining features).
• A frog: Is a multicellular organism, shows all life characteristics (metabolism, growth, reproduction, response to stimuli).
• Bacteria: Are unicellular organisms, exhibit life characteristics (reproduction, metabolism, response to environment).
• Bark of a tree: Is a non - living part of a living tree (the tree is alive, but bark is dead tissue, lacks life processes on its own).

Answer:

b. a frog, c. bacteria