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Grade 9 Science
Date_____________
Biological Diversity Study Guide
Unit Final Exam
Test Questions - Multiple Choice (35), Numerical Response (5)
and Short Answer (1)
Review your vocabulary for each Topic.
Topic 1: Biological Diversity and Survival
- Definition of biological diversity
- Variations (within species and between species)
- Why is important to maintain biological diversity?
- Definition of species
- What are structural and behavioral adaptations?
- Diversity Index (What is it and explain how it is calculated?)
Topic 2: Habitat and Lifestyle
- Competition and coexistence
- Niche (know the definition)
o Broad Niche - generalists
o Narrow Niche - specialists
- Symbiotic relationships (mutualism, parasitism and commensalisms)
Topic 3: Passing It On
- difference between asexual reproduction and sexual reproduction
(advantages and disadvantages)
- Asexual Reproduction
o Binary fission
o Asexual spores
o Budding
o Vegetative reproduction (meristem)
o Cloning
- Sexual reproduction plants and animals
o Bacterial conjugation
Topic 4: Wearing Your Genes
- Continuous and Discrete Variation (What is it and examples)
- Nature vs. Nurture Debate (What is it? Identical Twin studies)
- Dominant and Recessive Traits
- Punnett Squares (gene-pair combinations)
Topic 5: When Plans Change
- DNA (What is it? Where is it found? What is a mutation? How does it
occur? What can the results be? Cancer cells are caused by?)
- Chromosomes (What is it? Where is found? How many in the regular
body cells? How many in sex cells?)
- Mitosis (occurs where? Results in how many cells? What happens to
the number of chromosomes?)
- Meiosis (Occurs where? Results in how many cells? What happens to
the number of chromosomes?)
- Gene (What is It? Where is it found?)
- Life cycle of humans (Know cycle and names of cells at various stages)
- Genetic engineering (What is it?)
Topic 6: The Best Selection
- Artificial Selection (Selective Breeding_
- Natural selection (Galapagos Islands – Charles Darwin,
Peppered/Speckled Moths)
- Mimicry (What is it? Examples-Viceroy and Monarch Butterfly)
Topic 7: the Sixth Extinction
- Bioindicator Species (Definition and examples)
- The sixth extinction (What is it? What is causing it?)
- How are humans impacting biodiversity? (Know cause and be able to
explain)
- non-native species (introduced species)
Topic 8: Pains and Gains
- Functions of zoos and seed banks in protecting biodiversity