Froggy Jumps
9th grade Biology Final ReviewOnline version
9th grade Biology Final Review
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A random change in an organism's DNA that can lead to new traits, which may affect the organisms survival and reproduction.
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The process by which organisms with traits that are better suited to their environment have a higher chance of surviving and reproducing, passing those advantageous traits to the next generation.
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ability of an organism to survive, reproduce, and pass on its genes to the next generation
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proportion of a specific allele (variant of a gene) within a population
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population of beetles - two alleles for shell color - (B) dark shells, (b) light shells. Predators can see the light shell easier so they eat more of them. The beetles with recessive allele of dark shells have higher survival.
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Organisms can evolve in a lifetime. true or false?
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Bees carry pollen between red and yellow widlflowers on opposite sides of a river, resulting in orange flowers and increased genetic diversity. This is an example of which mechanism of evolution?
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By chance only green frogs survive a harsh winter in a small pond, making green the only color in future generations.
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A volcanic eruption only leaves blue-feathered birds alive, drastically reducing the populations genetic diversity.
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A few lizards colonize a new island & their limited genes lead to unique traits in the population over time.
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What is homologous structures mean
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Snakes have a vestigial structure of reduced hind legs. This suggests that ...
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What is stomatal regulation and how does it help a plant survive cold winters?
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What is leaf drop and how does it help plants survive harsh winters?
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Seed dispersal prevents the new plant from competing with parent plant for sun, water and nutrients and allows it to grow in new areas. True or False?
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Root hairs are tiny ____ of root cells that help plants absorb water and nutrients from the soil.
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Root hairs increase the __ ___ of the root allowing the plant to take in more resources efficiently.
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The more surface area the plants root system has the better it can absorb water and essential minierals, helping the plant grow and stay healthy.
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What parts of a flower are the male gamete and organ?
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What are the female parts of a flower?
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Pollen from a flower's anther lands on the stigma of the same flower or another flower on the same plant
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Pollen from one plant's flower is transferred to the stigma on a different plant of the same species.
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Self-pollination happens with the same plant, often without external help. True of false
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Cross-pollination requires wind, water, insects, birds, or other pollinatiors to transfer the pollen. T or F
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self-pollination results in
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cross-pollinators have high genetic diversity because
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How does positive thigmotropism benefit plants?
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What is the function of stomata?
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What is positive thigmatropism?
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Stomata are pores in the cells of leaves. What conditions would result in guard cells closing the stomata?
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Stomata are pores in leaves. What conditions would result in guard cells opening the stomata?
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Which body system is associated with hormones
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Which body system is associated with brain, spinal cord, and nerves?
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Which body system is associated with the lymph and keeping your body safe from pathogens?
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Which body system is associated with your GI tract and salivary enzymes?
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Which body system is associated with protecting your body; skin
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Which body system is associated with contractions, enables movement, muscles
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Which body system is associated with heart, blood, veins
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Which body system is associated with ovaries, testes
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Which body system is associated with kidneys, bladder, urethra...
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Which body system is associated breathing, lungs, exchange of gas?
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Which body system is associated bones, cartilage, joints...
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Jake catches a flu and his body sends white blood cells to fight the virus. They travel through his blood stream to the infection site to help clear the virus and speed up recovery. What 2 systems?
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When you get scared, your body releases adrenaline (hormone) that increase your heart rate. What 2 systems?
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When you cut your finger, your body bleeds and then forms a blood clot to stop the bleeding. Which 2 systems?
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If your blood pressure gets too high, your blood vessels will
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Your blood pressure is too low, your blood vessels
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Why do enzymes in your stomach require an acidic PH to work?
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why do enzymes int the intestines operate best in a more neutral environment?
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The nigtrogen cycle is the procss by which ___ is converted into different chemical forms as it move throught the environment starting with ___ ___.
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___ ___ is where bacteria convert atmostpheric nitrogen into ammonia/ammonium which plants can use.
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Through ___ ammonia is transformend into nitrites and then nitrates, which plants absorb.
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When plants/animals die, ____ break down their organic matter, releasing nitrogen back into the soil as ammonia in a process called ___.
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What is the role of bacteria/microorganisms in the nitrogen cycle?
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How would the removal of bacteria/microorganisms affect plants that rely on ammonium for growth and survival?
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How can the removal of plants via fires or deforestation affect the amount of atmospheric carbod dioxide?
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How do producers contribute to the carbon cycle?
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How do consumers contribute to the carbon cycle?
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Prokaryotes have genetic material DNA, RNA or both
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A relationship between two organisms where one benefits, and the other is neither helped or harmed like bird eating insects stirred up by cows.
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A relationship between two organisms where both benefit like bees pollinate flowers while collecting nectar.
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A relationship between two organisms where one organism benefits at the cost of the other often harming it like a tick feeding off a dog's blood.
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A relationship between two organisms where one organism (predator) hunts and kills the other (prey) for food like a lion hunting a zebra.
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Do you think overfishing sharks would increase or decrease the stability of the coral reef ecosystem?
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How does increased biodiversity affect an ecoystem's ability to recover from a disruption?
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Do eukaryotes have a nucleus?
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Do eukaryotes have mitochondria?
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Do eukaryotes have capsid?
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Do eukaryotes have relative size?
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Do eukaryotes have chloroplasts?
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Do prokaryotes have both DNA and RNA
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Do prokaryotes have a nucleus?
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Do prokaryotes have mitochondria?
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Do prokaryotes have capsid?
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Do prokaryotes have relative size?
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Do prokaryotes have chloroplasts?
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Do viruses have both DNA and RNA?
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Do viruses have a nucleus?
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Do viruses have mitochondria?
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Do viruses have capsid?
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Do viruses have relative size?
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Do viruses have chloroplasts?
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Functions and Structures of the skin