Chapter 7 Quiz

If there were only one, nonreproducing member of a particular kind, it is doubtful that we would have noticed its existence.

Reproduction is important for organisms because it ensures the continuation of their species and genetic diversity.

Large numbers of organisms belonging to a single species bring them to our notice and contribute to the visibility of the species.

<p>Organisms waste energy on reproduction to ensure the survival and continuation of their species.</p> Signup and view all the answers

<p>Organisms maintain the continuation of their species through the process of reproduction.</p> Signup and view all the answers

<p>The defining characteristics of life include the capacity for homeostasis, organization, metabolism, growth, adaptation, response to stimuli, and reproduction.</p> Signup and view all the answers

<p>Viruses replicate only in host cells, making it challenging to categorize them as living or non-living entities.</p> Signup and view all the answers

<p>Life exists in air, water, and soil, with many ecosystems forming the biosphere. Some harsh environments are occupied only by extremophiles.</p> Signup and view all the answers

<p>Historical theories include Empedocles's materialism, which proposed that life was composed of four eternal elements, and Aristotle's hylomorphism, which asserted that living things have souls and embody both form and matter.</p> Signup and view all the answers

<p>Life originated at least 3.5 billion years ago, resulting in a universal common ancestor.</p> Signup and view all the answers