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Transport between cells
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2.1. The circulatory system The circulatory system is made up of blood vessels (arteries, veins and capillaries). The heart pumps the blood through the blood vessels to reach all the cells in the body.…
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Summaries - The Plant Kingdom
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1. Plants Plants originated 500 million years ago from green algae in the sea. Plants are multicellular organisms with particular characteristics: They are held in place in the ground by roots. They are…
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True / False. Cellular respiration
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Are these sentences true or false? Our body exchanges oxygen for carbon dioxide inside the pulmonary arteries. The pulmonary alveoli are connected to a network of very small blood vessels called…
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Think. Ferns
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In some areas, like tropical forests, ferns can grow to a great height. This photo shows very tall ferns in a tropical environment: Do you think ferns like these contain a lot of xylem vessels in their…
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Classify. Gymnosperms
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Decide if the following are characteristics of gymnosperms: They are multicellular organisms. They have vessels for transporting sap. They have cauloids. They use asexual reproduction. Their seeds are…
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Answer. Blood circulation
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Describe the functions of the circulatory system. What does blood consist of? Explain the different functions of blood. Name the three types of blood vessels. What functions do they perform?
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Plant groups. Mosses and ferns
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2.1. Plant groups Plants can be classified into two groups: Vascular plants. Plants which have vessels for transporting sap from the roots to the leaves and vice versa. Examples are ferns and…
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Observe. Development of an embryo
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The photos show the development of a chicken embryo. The embryo develops until it becomes a chick. It then hatches from the egg. At 5 days, there are thin red blood vessels that extend from the embryo,…
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Final self-evaluation 9.02 - The Plant Kingdom
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Complete the text with the missing words: stem – multicellular – Photosynthesis – mineral – ground – water – autotrophic – sap – roots – vessels Plants are and organisms that rooted to…
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Seed-producing plants. Gymnosperms
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3.1. Seed-producing plants Seed-producing plants reproduce through seeds. Like ferns, they have vessels and vegetative organs. There are two groups of seed-producing plants: Gymnosperms are plants with…
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