1 1 The diagram shows the apparatus at the beginning of an investigation into temperature change during the germination of seeds. The temperature at the start of the investigation was 25 °C in both flasks. After two days the temperature in flask 1 is 25 °C. The temperature in flask 2 is 28 °C. vacuum flask living seeds dead and disinfected seeds cotton wool thermometer flask 1 flask 2 Which characteristic of living organisms is shown in this experiment? A excretion B growth C reproduction D respiration [1] [Total: 1] 2 2 Respiration is one of the characteristics of living things. Tick (✓) two boxes to show two other characteristics of all living things. breathing excretion growth photosynthesis sexual reproduction [2] [Total: 2] 3 All living organisms show the same seven characteristics. State four of the characteristics of living organisms. 1 ............................................................................................................................................... 2 ............................................................................................................................................... 3 ............................................................................................................................................... 4 ............................................................................................................................................... [4] [Total: 4] 4 Excretion is a characteristic of living organisms. Growth is another characteristic of living organisms. Define the term growth. .................................................................................................................................................. .................................................................................................................................................. .................................................................................................................................................. [2] [Total: 2] 5 State the names of two different types of plant cell. 1 ............................................................................................................................................... 2 ............................................................................................................................................... [2] [Total: 2] 3 6 State the name of the cell structure where photosynthesis happens. .................................................................................................................................................. [1] [Total: 1] 7 State the name of the structure that contains chlorophyll in a plant cell. .................................................................................................................................................. [1] [Total: 1] 8 The diagram shows a pollen grain of a rice plant. The size of the image is 40 mm. 40 µm The actual length of the pollen grain is 40 m. By how many times has the diagram been magnified? A x1 B x10 C x100 D x1000 [1] [Total: 1] 9 Complete the definition of the term tissue by inserting the missing words. A tissue is a group of cells with similar .............................................. working together to perform a shared .............................................. . [2] [Total: 2] 4 10 The diagram shows images of cells from two different organ systems. State the names of the cell A and cell B. cell A ........................................................................................................................................ cell B......................................................................................................................................... [2] [Total: 2] 11 Water is an important substance for plants. State the name of the cells where water enters a plant. .................................................................................................................................................. [1] [Total: 1] 12 State the names of the organ systems these organs belong to. brain ......................................................................................................................................... stamen ..................................................................................................................................... ovary ........................................................................................................................................ [3] [Total: 3] 5 13 The photograph shows an example of an unhygienic practice in a kitchen. Explain why hygienic food preparation is important. .................................................................................................................................................. .................................................................................................................................................. .................................................................................................................................................. .................................................................................................................................................. .................................................................................................................................................. [2] [Total: 2] 14 Suggest two reasons why it is important for people to wash their bodies frequently. 1 .............................................................................................................................................. .................................................................................................................................................. 2 .............................................................................................................................................. .................................................................................................................................................. [2] [Total: 2] 6 15 Hygienic conditions are required in an apple juice factory. Describe three precautions workers should take to ensure that good food hygiene is maintained in the apple juice factory. 1 ............................................................................................................................................... .................................................................................................................................................. 2 ............................................................................................................................................... .................................................................................................................................................. 3 ............................................................................................................................................... .................................................................................................................................................. [3] [Total: 3] 16 State one type of blood cell that is involved in the defence against disease. .................................................................................................................................................. [1] [Total: 1] 17 Which term describes the transmission of genetic information from one generation to the next? A genetic engineering B inheritance C natural selection D variation [1] [Total: 1] 18 The American writer Ernest Hemingway lived on the island of Key West in Florida, USA in the 1930s. During this time he was given a male cat by a sea captain. The cat had more toes than usual. This inherited condition is called polydactyly. The allele for polydactyly is dominant. Define the term inheritance. .................................................................................................................................................. .................................................................................................................................................. .................................................................................................................................................. [1] 7 [Total: 1]
