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Transcript
Name ___________________________________ Class _________ Date ___________ Grade Nine Science Biological Diversity Unit Exam Review Glossary List Species Ovule Speciation Pollen tube Structural adaptation Embryo Behavioural adaptation Cotyledon Diversity index Internal fertilization Competition External fertilization Broad niche Genetics Generalist Continuous variation Specialist Discrete variation Narrow Niche Dominant trait Specialization Recessive trait Symbiotic association Mutation Heritable Mutagen Reproductive strategy DNA Asexual reproduction Chromosome Binary fission Gene Spore Somatic cell Zoospore Mitosis Meristem Meiosis Clone Genetic engineering Budding Biotechnology Sexual reproduction Transgenic Zygospore Domestic animal Bacterial conjugation Artificial selection Gamete Selective breeding Zygote Natural selection Pistil Extirpation Stamen Bioindicator species Key Ideas How are living things classified and named? How do scientists measure biological diversity? Using an owl as an example, explain the difference between behavioural and structural adaptations. How does competition increase variation? Compare living things with a broad niche and a narrow niche. Identify three examples of symbiosis. What do all offspring from asexual reproduction have in common? Identify five examples of asexual reproduction. Name ___________________________________ Class _________ Date ___________ How are offspring produced by sexual reproduction different from those produced by asexual reproduction? Using the terms gamete and zygote explain how sexual reproduction increases genetic diversity. Explain how plants can reproduce both sexually and asexually. List several examples of discrete variation and continuous variation in humans. Why can some people roll their tongue and other people cannot? Use a Punnett square to show the genetic possibilities if two heterozygous parents for tongue rolling (Tt) produce an offspring. What makes mutagens potentially dangerous chemicals? What is the relationship between DNA, chromosomes and genes? Describe how a strand of DNA is put together. Compare mitosis and meiosis. Which one is important in increasing genetic diversity? Give examples of how transgenic plants and animals have improved medicine and agriculture. Today there are over 160 breeds of dogs that have descended from a single ancestral species. How is this possible? How does natural selection lead to the development of new species? How does the rate of extinction of species affect the earth’s biodiversity? How do human activities contribute to the rate of extinction? List four ways that humans are attempting to protect the biodiversity of life on our planet.