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Chapter 1
Understanding biodiversity based on Nelson Education's Gr.11 Biology textbook.
| Question | Answer |
|---|---|
| What is diversity? | The number and variety of species and ecosystems on Earth. |
| What is a species? | All organisms capable of breeding freely with each other under natural conditions. |
| True or false? Species can breed with another species. | False, animals usually do not interbreed. |
| Fill in the blank. Two plants that appear to be distinct species may occasionally undergo _________ under natural conditions, forming a cross between the two species. | Hybridization. |
| What is morphology based on? | Physical appearance or characteristics. |
| What are evolutionary changes? | The physical and behavioural changes that occur in entire populations of a species over time. |
| Genetic variability among organisms is known as? | Genetic diversity. |
| What is the difference between heterotrophs and autotrophs? | Heterotrophs cannot produce their own food, while autotrophs can. |
| What is species diversity? | The variety of species in an ecosystem and the number of individuals within each of those species. |
| The range of physical shapes and sizes within a habitat or ecosystem is known as? | Structural diversity. |
| What does structural diversity do? | It create microhabitats with a variety of abiotic conditions. |
| True or false? An ecosystem with many large populations is considered more diverse than an ecosystem made up of smaller populations. | True, the larger the population of a species, the more interactions it will have. |
| In what ways does the loss of human diversity affect humans? | - Threatens our food supply - Eliminates sources of natural medicines and potential new medicines - Impacts tourism and forestry economically - Can cause serious disruptions in biogeochemical cycles |
| True or false? Species are independent. | False, all species depend on other species in a variety of ways for their own survival. |
| What is the science of classifying living things? | Taxonomy. |
| How are species named? | Through the process of binomial nomenclature, they are given a unique two-word species name. |
| How are species grouped together in traditional taxonomy? | They are grouped together according to shared characteristics. |
| How did Carl Linnaeus group species? | He used taxonomic ranks or levels (taxon, plural: taxa). |
| What is the order of the taxa? | Kingdom, Phylum, Class, Order, Family, Genus, Species |
Created by:
maquino
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