Jeddah Knowledge International School
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1 Jeddah Knowledge International School Individuals and Societies Revision Pack ANSWER KEY Quarter 3 Grade 7 Name: Section: Individual and Societies Revision Pack Grade Seven Quarter 3 Page 1
2 Question 1 The food chain below is made up of: Grass, Antelope, Lion, Beetle and the Sun. 1.1 Name the: A) Producer: Grass B) Consumer: Antelope or Lion C) Decomposer: Beetle 1.2 Life on Earth would not exist without the: A) Consumers B) Decomposers C) Sun D) Producers Question 2 Look at the following list of organisms found in an ecosystem make up any 3 food chains. Caterpillar Robin Leaf Wood mouse seed aphid ladybird squirrel Individual and Societies Revision Pack Grade Seven Quarter 3 Page 2
3 Blue tit hawk 1. Leaf aphid Robin 2. Leaf Caterpillar Blue tit 3. Seed squirrel Hawk (Any other sensible food chain) Must start with a producer- or any other product of a tree or plant. Question 3 Look at the picture in question 1 then answer the questions below: 3.1 How many producers? How many consumers? How many decomposers? 1 Question 4 Look at the picture below and answer the questions that follow: 4.1 What biome is found near the: A) Equator: Tropical Rainforest B) Tropic of Capricorn: Hot desert C) Tropic of Cancer: Tundra and ice desert Individual and Societies Revision Pack Grade Seven Quarter 3 Page 3
4 4.2 Match up these beginnings with and endings. They are about the climates in each of the biomes: 1. The rainforest is found near the equator because 2. The hot deserts are near the Tropic of Cancer and the Tropic of Capricorn because 3. The savanna is in-between the Tropics and the Equator because B A C A. This is where there isn t much rainfall throughout the year. B. This is where there is lots of rain all year round C. There is a rainy season and a dry season but not enough rain all year for lots of trees Question 5 The picture below shows one of the Human Impacts on Ecosystems: 5.1 What is this process above called? Deforestation 5.2 List four reasons why humans would do this: A) Land for HOUSING B) Land for AGRICULTURE C) Use the wood for URNITURE and other products D) Urbanization 5.3 Mention two problems that this could cause for the environment: A) Loss of Habitat of Animals who lived there. Individual and Societies Revision Pack Grade Seven Quarter 3 Page 4
5 B) Soil Erosion- trees hold soil together and provide it with nutrients, when it is removed, soil loses its nutrients and minerals. Question 6: Tropical Rainforests EMERGENT LAYER CANOPY UNDERSTORY OREST LOOR 6.1 Label the different layers of the Tropical Rainforest on the arrows. 6.2 Give one reason for the tallest tree The tallest tree is competing for the Sunlight because the rainforest has lots of trees, sunlight does not always reach all of the plants so many plants in the rainforest have adapted. 6.3 Provide two types of animals one may find in the tropical rainforest A) Green tree frog B) Any other relevant animal: Jaguars, tigers, gorillas, leopards, sloth etc. Individual and Societies Revision Pack Grade Seven Quarter 3 Page 5
6 Question 7: Study the picture below and from what you have been taught, answer the following questions: 7.1 Read the following statements about the Savanna and say whether they are True or alse: The savanna has lots of trees It rains for the whole year The baobab tree has a thick trunk to store water in There are small and large animals in the savanna Animals in the savanna have to travel a long way to find grass in the dry season T T T Giraffes have short necks so that they can reach the acacia leaves The acacia tree has large leaves to release water The vegetation comes to life in the dry season. It is known as the growing season Individual and Societies Revision Pack Grade Seven Quarter 3 Page 6
7 7.2 There are five false statements above. Re-write the false statements below (Page 56-Textbook) to make them true. 1. The savanna does not have lots of trees, instead it has shrubs (small bushes) and a few scattered trees. 2. The savanna experiences seasonal rain. Periods where it rains (wet season) and a dry season. 3. Giraffes in fact have very long necks in order to reach the leaves which is found on trees. 4. The acacia tree has small spiky leaves with a waxy layer to limit the amount of water that is lost through its leaves 5. The plants in the savanna start growing immediately after the wet season and the savanna then comes to life 7.3 How the savanna can be destroyed. Study the picture below of how human interaction can destroy the savanna. Use the box below to complete the paragraph. Nutrients land crops firewood trees farmers wild population ARMERS used to bring their herds here to graze. The tribe started to settle here and drove the WILD animals away. They chopped down TREES to build huts and for IREWOOD. The land was cleared to grow CROPS. Individual and Societies Revision Pack Grade Seven Quarter 3 Page 7
8 The POPULATION is growing fast. There are farms and cattle everywhere, and soon There is no new LAND to move to. The soil is getting worn out because the crops is taking all its NUTRIENTS. Question 8 Definitions. Define the following terms 1. Ecosystem : Living and non-living organisms interacting in their environment. 2. Producer : Has green leaves, is able to take energy from the sun and make its own food. 3. Herbivore: An animal that feeds on plants. 4. Carnivore : An animal that feeds on other animals. 5. Decomposer: An organism that breaks down dead material. 6. Sustainable: Using only enough resources from the environment that will not endanger any other species, using natural resources in a responsible way so that it may last for future species. 7. Deciduous : A tree that loses its leaves at the end of its growing season 8. ood chain: One species being consumed (eaten) by another, usually stating off with a producer (plant). 9. ood web: Many food chains that interact with each other. Individual and Societies Revision Pack Grade Seven Quarter 3 Page 8
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