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The five groups of vertebrates
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Fish have an elongated body and swim using their fins. Amphibians live part of their life in water. Their skin is moist and slippery. Reptiles crawl to move around. Their bodies are covered with hard…
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True/false. Characteristics of vertebrates
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Decide if the following sentences are true or false: Vertebrates are the largest animal group on Earth. ➝ Almost all vertebrates have limbs. ➝ Limbs are called wings when they are used for flying.…
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Analyse. Cell cultures
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Cell cultures Cell cultures consist of cultivating cells, both animal and plant, in the laboratory. We do this to obtain cell tissue. The tissues obtained from animal cells can repair or substitute…
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The senses
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We receive information on what is happening outside our body through our sensory receptors. These receptors are specialised nerve cells that capture stimuli from outside our body. There are different…
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Adrenaline prepares for action
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In situations of danger or fear, the adrenal glands produce a hormone called adrenaline. This prepares the body for action, like running or hiding. This is called the fight or flight response.…
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Worms and molluscs
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Worms Worms are animals with long, soft bodies and moist skin. They do not have legs; they move by wriggling. Most worms live in the sea or in fresh water. Some live on land, like earthworms. Some worms…
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Complete. The receptors
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Complete the text using the following words: taste cells - taste buds- cones - hair cells - pressure - receptors - are cells that specialise in receiving stimuli and transmitting them to the brain. In…
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Summaries - The Animal Kingdom (II). Vertebrates
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1. Fish Fish are perfectly adapted to aquatic life. There are two main groups of fish: bony fish and cartilaginous fish. Most fish are bony fish such as hake, salmon and trout. Sharks and manta rays are…
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