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Life Science Vocabulary Review (Grade 7)

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Life Science Vocabulary Review

The                 is the sphere inhabited by life.
  1. biosphere
  2. geosphere
  3. atmosphere
  4. hydrosphere
The complex interactions of different organisms with one another and with their environment is a(n)
  1. biome.
  2. community.
  3. ecosystem.
  4. population.
Features of the environment that are alive or were once alive are
  1. abiotic.
  2. biotic.
  3. climate.
  4. community.
What is a characteristic of an organism that increases its chances of survival in its environment?
  1. mimicry
  2. camouflage
  3. behavior
  4. adaptation
The number of a group of the same kind of living things that live in the same place is called a(n)
  1. habitat.
  2. population.
  3. ecosystem.
  4. community.
What is a model that shows ALL the feeding relationships in an ecosystem?
  1. habitat
  2. food web
  3. food chain
  4. biosphere
Organisms such as green plants or algae are
  1. decomposers.
  2. herbivores.
  3. consumers.
  4. producers.
An animal that eats only plants or producers is a(n)
  1. consumer.
  2. herbivore.
  3. carnivore.
  4. omnivore.
A type of symbiotic relationship in which one organism benefits and the other organism is harmed is
  1. mutualism.
  2. commensalism.
  3. parasitism.
  4. niche.
What are the two types of ecological succession?
  1. primary and secondary
  2. abiotic and biotic
  3. plant and animal
  4. erosion and deposition
Which adaptation enables organisms to be hidden or disguised in their surroundings, possibly providing an advantage?
  1. mimicry
  2. camouflage
  3. mutation
  4. evolution
Individual ecosystems grouped together according to the climate and the predominant vegetation are
  1. ecosystems.
  2. communities.
  3. populations.
  4. biomes.
A species that dies out is
  1. mutated.
  2. varied.
  3. adapted.
  4. extinct.
What is the first stage in the life of a plant?
  1. fertilization
  2. pollination
  3. germination
  4. reproduction
  5. seed dispersal
The structure in seed plants that supports the other parts of plants is the
  1. root.
  2. stem.
  3. seed.
  4. leaf.
Plants that produce seeds enclosed in a fruit are
  1. angiosperms.
  2. cotyledons.
  3. gymnosperms.
  4. sepals.
Carbon dioxide enters the leaves through the
  1. roots.
  2. stem.
  3. stomata.
  4. flowers.
Tropism is the process of
  1. movement of a plant toward or away from a stimulus.
  2. making sugar from sunlight.
  3. transporting water along a stem.
  4. adapting to a hot climate.
What process produces carbon dioxide?
  1. photosynthesis
  2. replication
  3. mutation
  4. respiration
Plants use sunlight to make food in a process called                .
  1. respiration
  2. photosynthesis
  3. fermentation
  4. mitosis
The theory that life could spring from nonliving matter is
  1. spontaneous generation.
  2. asexual reproduction.
  3. homeostasis.
  4. stimulus/response.
Passing traits from parents to offspring is
  1. genetics.
  2. heredity.
  3. evolution.
  4. genes.
What an organism looks like, or its other detectable characteristics, is its
  1. genetic variable.
  2. genotype.
  3. phenotype.
  4. allele.
What describes a segment of DNA that determines a specific trait in a person, such as attached earlobes?
  1. a gene
  2. a phenotype
  3. a chromosome
  4. a characteristic
An organism that has two different alleles for the same trait is
  1. genotype.
  2. phenotype.
  3. homozygous.
  4. heterozygous.
A sudden change in an organism's genes is
  1. biodiversity.
  2. mutation.
  3. symbiosis.
  4. taxonomy.
The twisted shape of DNA is a
  1. double ladder.
  2. double helix.
  3. nucleotide.
  4. base pair.
What model can be used to predict the outcome of a genetic cross?
  1. Punnett square
  2. Mendel square
  3. concept map
  4. allele triangle
What is the basic unit of structure and function of all living things?
  1. tissue
  2. organ
  3. system
  4. cell
The part of a plant cell that provides support for the cell is the
  1. cytoplasm.
  2. mitochondria.
  3. endoplasmic reticulum.
  4. cell wall.
Cells make their own proteins on small structures called
  1. DNA
  2. cytoplasm.
  3. ribosomes.
  4. cytoskeleton.
What structure in a cell is considered the "power plant" of the cell?
  1. cell membrane
  2. mitochondrion
  3. nucleus
  4. cytoplasm
The movement of substances through membranes without the use of the cell's energy is
  1. passive transport.
  2. cellular respiration.
  3. osmosis.
  4. active transport.
What is a chloroplast?
  1. regular growth and division that cells undergo
  2. structure in a cell that controls what enters and leaves
  3. water-filled sac inside a cell that acts as a storage area
  4. plant cell structure that captures and uses energy from sunlight to produce food
The process by which the number of chromosomes is reduced by half to form sex cells is
  1. DNA replication.
  2. mitosis.
  3. meiosis.
  4. cytokinesis.
Which type of reproduction requires male and female sex cells?
  1. asexual reproduction
  2. sexual reproduction
  3. mitosis
  4. budding
                is a form of asexual reproduction used by some organisms, such as yeast. A small growth forms on the parent cell. Then the nucleus in the parent cell divides in two. The growth breaks off and lives as a new, separate organism.
  1. Binary fission
  2. Conjugation
  3. Budding
The scientific study of how things are classified is
  1. development.
  2. biology.
  3. taxonomy.
  4. evolution.
Invertebrates are animals that
  1. do not have a backbone.
  2. have a backbone.
  3. eat meat.
  4. eat plants.
The largest group into which an organism is classified is the
  1. order.
  2. class.
  3. kingdom.
  4. genus.
The organisms of kingdom                 are multicellular, have specialized tissues, and cannot make their own food.
  1. Monera
  2. Protista
  3. Fungi
  4. Plantae
  5. Animalia
A cold-blooded animal that lays eggs with a leathery shell and has a dry, protective covering of horny scales or plates is a(n)
  1. amphibian.
  2. salamander.
  3. reptile.
  4. mammal.
Some animals change a great deal as they mature. They have one kind of body when they are young and a different kind of body as an adult. What is this process?
  1. photosynthesis
  2. chromosome
  3. fertilized egg
  4. metamorphosis
What is the system responsible for taking in oxygen and removing carbon dioxide from the body?
  1. circulatory
  2. respiratory
  3. excretory
  4. digestive
The system responsible for breaking down food so that nutrients may enter the bloodstream is the
  1. circulatory system.
  2. respiratory system.
  3. digestive system.
  4. excretory system.
Neurons are cells that
  1. give, receive, and handle information.
  2. help your body to grow physically larger.
  3. you do not have when you are first born.
  4. only exist in your lungs.
When sperm cells fertilize egg cells, the product is a
  1. zygote.
  2. hypha.
  3. gamete.
  4. chromosome.
Glands are organs located throughout your body that secrete or release substances called
  1. hormones.
  2. enzymes.
  3. bile.
  4. uric acid.
What type of symmetry does a human have?
  1. radial
  2. bilateral
  3. reflection
  4. asymmetry
The process by which an organism gets rid of waste materials is
  1. ingestion.
  2. digestion.
  3. respiration.
  4. excretion.

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