Biology Quiz on Living Organisms

MRS GREN stands for Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition.

A species is defined as a group of organisms that can reproduce to produce fertile offspring.

Excretion is the removal of toxic or waste material from organisms, which is essential for maintaining internal balance.

<p>The five kingdoms are Animals (e.g., Lion), Plants (e.g., Oak tree), Fungi (e.g., Mushroom), Protists (e.g., Amoeba), and Prokaryotes (e.g., Escherichia coli).</p> Signup and view all the answers

<p>Sensitivity allows organisms to detect stimuli in their environment, enabling them to respond appropriately for survival.</p> Signup and view all the answers

<p>Animals are multicellular organisms that feed on other organisms to create organic substances, and their cells contain a nucleus but lack chloroplasts and cell walls.</p> Signup and view all the answers

<p>In the binomial system, the first letter of the genus name is capitalized to distinguish it from the species name, which is written in lowercase.</p> Signup and view all the answers

<p>Dichotomous keys provide a step-by-step approach for identifying organisms by asking a series of questions about their specific characteristics.</p> Signup and view all the answers

<p>The unique features of animals, such as being multicellular and heterotrophic, define their classification within the animal kingdom as distinct from other kingdoms like plants and fungi.</p> Signup and view all the answers

<p>To identify an unknown organism using a dichotomous key, one must carefully answer the sequential questions based on the organism's characteristics until reaching its identification.</p> Signup and view all the answers