YEAR 10 BIOLOGY SEMESTER 1 EXAM 1. Fig. 1.1 shows six different cells. They are not drawn to the same scale. (a) Table 1.1 shows a key which can be used to identify these cells. Use this key to identify cells A, B, C, D and E. Cell F has been done for you. Write your answers in Table 1.2
(10) (b) (i) State the main function of a palisade cell. ...................................................................................................................................... [1] (ii) Suggest and explain two ways in which the structure of a palisade cell is adapted to this function. adaptation 1 ...................................................................................................................... explanation ........................................................................................................................ ........................... ................................................................................................................ adaptation 2 ...................................................................................................................... explanation ........................................................................................................................ ........................... ........................................................................................................... [4] 2. Woodlice are small organisms that live in damp places. In an experiment, three live woodlice are put into a glass container. The diagram shows what happened after 30 minutes. Which characteristic of living organisms is shown by this experiment? (1)
3. Which species can breed with Prunella vulgaris to produce fertile offspring?(1) 4. What is the correct order of arthropod groups, from those with the most legs to those with the fewest legs? (1) 5. The diagram shows four animal cells, as seen under a light microscope. (1) 6. The diagram shows a root hair cell. (1)
How is this cell modified for the absorption of water? (1) 7. A student draws a diagram of a mitochondrion.(1) The diagram has a magnification of 20 000. The diagram is 5 cm long. What is the actual size of the mitochondrion? 8. Which layer in the leaf contains interconnecting air spaces?(1)
9. (a) Fig. 2.1 is a diagram of a prokaryotic cell. (i) State one visible feature in Fig. 2.1 that identifies this cell as a prokaryotic cell. ..................................................................................................................... ................ [1] (ii) State one cell structure that is present in the cells of all organisms. ..................................................................................................................... ................ [1] (b) Prokaryotes, Animals and Plants are three of the five kingdoms of organisms. State the names of the two other kingdoms. 1 .................................................................................................................. .............................. 2 .................................................................................................................. .............................[2] 10. Why do you think poikilothermic (cold blooded) animals are slowed down by low temperatures? (3) 11. Give two reasons why viruses are not classified as living things. (2) 12.List three differences between a plant cell and an animal cell. (3)