Science 7 Exam
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| invertebrate | An animal without a backbone
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| muscle tissue | Tissue made of muscle cells that allow animals to move.
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| nervous tissue | Tissue made of nerve cells that enables coordinated movement and response to stimuli.
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| central nervous system | The control center of the body that includes the brain and spinal cord.
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| peripheral nervous system | Consists of nerves that connect all areas of the body to the central nervous system.
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| nerve impulse | A wave of electrical activity transmitted between neurons.
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| withdrawal reflex | An involuntary response to an outside stimulus.
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| sensory nerves | Nerves that receive sensory stimuli
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| motor nerves | Nerves that transmit signals to skeletal muscle
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| cerebrum | The part of the brain that controls voluntary movements
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| cerebellum | The part of the brain that keeps the body in balance.
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| photoreceptors | Light-sensitive cells of the retina that convert light into nerve impulses.
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| optic nerve | A nerve that carries nerve impulses from the eye to the brain.
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| pupil | The hole in the eye through which light enters.
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| image | A picture of an object formed where light rays meet
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| cone cells | Photoreceptors that respond to color.
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| rod cells | Photoreceptors that respond to light intensity.
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| reproduction | The formation of new organisms of the same species.
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| asexual reproduction | A type of reproduction that requires only one parent
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| sexual reproduction | A type of reproduction that involves special cells called sex cells.
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| sex cells | Special cells that contain half the number of chromosomes as body cells.
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| meiosis | Cell division that produces sex cells with half the number of chromosomes.
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| diploid | A double set of chromosomes.
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| haploid | A half set of chromosomes.
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| fertilization | The union of egg and sperm.
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| zygote | A fertilized egg.
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| embryo | An organism in its earliest stage of development.
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| cell differentiation | The process of cell specialization.
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| testes | Produce sprem and testosterone.
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| hormone | A chemical that regulates body functions.
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| semen | A mixture of sperm and fluid that is ejaculated during sexual intercourse.
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| ovaries | Female organs that produce eggs and female hormones.
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| ovulation | The release of a mature egg from the ovary.
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| follicle | A structure of the ovary where an egg matures.
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| implantation | The process in which an embryo becomes embedded in the lining of the uterus.
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| umbilical cord | Contains arteries and veins that connect the embryo to the placenta.
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| fetus | An embryo that has developed for 8 weeks and has formed the major structures.
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| uterus | The organ where a baby grows and develops.
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| adaptation | A adapted trait that helps an organism survive.
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| evolution | The process of how organisms acquire adaptations over time.
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| ancestor | An organism from which others have descended.
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| cladogram | A tree like diagram that displays evolutionary relationships among living species and their ancestors.
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| homologous structures | Body structures that have a common origin but do not necessarily perform the same function.
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| vertebrates | Animals with a backbone.
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| ecology | Science dealing with living beings and their surroundings.
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| ecosystem | A group of living things and their surroundings.
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| abiotic | Factors of the ecosystem which aren't alive.
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| biotic | The organisms that share the environment.
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| biome | The world's major ecosystems
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| biosphere | The part of the planet that can support life.
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| communities | All the organisms that interact in a certain area.
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| populations | A group of individuals of the same species living in a given area.
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| species | Different kind of organisms found on earth.
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| habitat | A place where an organism lives.
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| niche | The function of an organism in a community.
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| producer | Organisms that make their own food.
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| consumer | organisms that do not produce their own food.
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| primary consumer | Organisms that eat plants.
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| secondary consumer | Organisms that eat plants or other organisms.
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| tertiary consumers | Organisms that eat other organisms.
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| decomposer | Organisms that break down cells.
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| symbiosis | An interaction between two species.
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| mutualism | When both organisms benefit from each other.
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| commensalism | When one organism benifits
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| paratism | One organism that benifits from another's harm.
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| biodiversity | All the species living in an area.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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