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Resums - Els animals
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1. Esponges, celenterats i equinoderms Les esponges són els animals més simples que existeixen i tots viuen a l’aigua, normalment fixats a les roques. Els celenterats tenen un cos amb simetria…
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Contesta. La reproducció humana
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Recorda el que has treballat en aquest apartat i contesta: Com s'anomena el procés en el qual es forma un zigot? Quines dues cèl·lules s'uneixen? En què consisteix la reproducció sexual?…
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Contesta. Fonts d'energia no renovables
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Recorda el que has treballat en aquest apartat i contesta: Què són les fonts d'energia que anomenem no renovables? Quines són les principals aplicacions del petroli? I les del carbó? Què és el…
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Coasts
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The coast of Spain Spain has a long coastline. There are 3904 km of coastline on the Peninsula, 910 km on the Balearic Islands and 1126 km on the Canary Islands. The coastline of Spain is surrounded by…
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Answer. Characteristics of living things
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Remember what you have studied in this section and answer the questions: How are living things different from non-living things? What are the six vital functions of living things? Why are living things…
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A microscope
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A microscope is an instrument that magnifies very small objects, like cells, so that we can observe and study them. The main part of this instrument is a metal tube with a lens at each end: the eyepiece…
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True/false. Characteristics of amphibians
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Decide if the following statements are true or false: Amphibians live in salt water. ➝ The skin of amphibians is always dry. ➝ They have four legs. ➝ Amphibians breathe through their skin and with…
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Complete. Metamorphosis
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Complete the following text about metamorphosis with the correct words: different caterpillars larvae tadpoles indirect metamorphosis In development, the young, called are very to their parents and must…
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Budding in corals
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Corals are cnidarians that live in big colonies where thousands of other individual corals grow. Corals reproduce asexually by budding. Each coral starts life as a single individual. The individual…
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Final self-evaluation 07 - Animal reproduction
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Decide if the following statements are true or false: The length of gestation is the same for every species. ➝ The shells of eggs allow them to dry. ➝ Birds look after their young after birth. ➝…
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