Second Unit Assessment Science 7th

Charles Darwin was a naturalist. Write T if the statement is true or F if the statement is false. If the statement is false, change the underlined word(s) to make it true. Write your changes. Camouflage is the resemblance of one species to another species. Write T if the statement is true or F if the statement is false. If the statement is false, change the underlined word(s) to make it true. Write your changes. How did Charles Darwin study plants and animals? by making scientific models by experimenting in the laboratory by observing them in their habitats Traveling in a herd is a: behavioral adaptation environmental adaptation functional adaptation What is a major cause of extinctions? biological evolution environmental change carbonization and mineralization What is the purpose of the circulatory system? It defends the body from diseases. It transports materials throughout the body. It breaks down food into energy and nutrients. Which event happens during infancy? walking begins embryos develop reproductive systems mature Which system helps the body detect and respond to information from theenvironment? the nervous system the muscular system the endocrine system Which of the following are NOT gametes? ova sperm zygotes Select the term from the word bank that correctly completes each sentence. Each term isused only once. A hormone is a chemical signal sent to the organs of the body.The part of food the body uses to grow and survive is a nutrient. The period of time during which the reproductive system develops is puberty.An automatic movement the body makes in response to a signal is a reflex.Homeostasis is the maintenance of steady internal conditions in the body when external conditions change.Fertilization occurs when a sperm cell and an egg cell join.The basic unit of the nervous system is the neuron. In which part of a plant leaf does most photosynthesis occur? the cuticle the stomata the chloroplasts the vascular tissue Water travels from the roots of a plant to its stems and leaves through: phloem cells xylem cells vascular cells Respiration in plants requires: carbon dioxyde oxygen Which of the following is an example of a chemical stimulus? light touch gravity hormones Name the three types of tropisms in plants and next to each what is the stimulus required for each. Match the meaning to the concept Select from the bank the correct answer. Definition word an area that contains ecosystems with similarbiotic and abiotic features Biome largest number of one species that an ecosystemcan support over time carrying capacity growth of a population under perfect conditionswith no limiting factors biotic potential the interaction of living and nonliving things inone place ecosystem two organisms living in a close relationship overa long period of time symbiotic relationship the relationship between lice and the your head parasitism Water, space and food are these limiting factors the relationship between leaf-cutter ants and thefungus that grows on leaves after the ants chewthe leaves into small pieces mutualism more individuals than an area can support overpopulation recycles a gas in the atmosphere that people andother animals breathe in oxygen cycle Which activity is a way producers get energy? eating predating transpiration chemosynthesis Which of the following is a community? Which of the following is a population? Write the difference between a Food Chain and a Food Web. Energy Pyramid On the Energy Pyramyd, which animals are carnivores? On the Energy Pyramid shown before, Which animals are hervibores? Draw or upload a picture, and Explain the Carbon Cycle. Water Cycle Label the processes inside the water cycle. (only use lower case letters to fill it up) evaporation condensation precipitation Which topic or activity was your favorite during the unit and why?