Download Grade Nine Science Biological Diversity Unit Exam Review

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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.
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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.