7Ab/12 Cell parts nucleus cytoplasm cell surface membrane cell wall vacuole chloroplast found in plant cells only found in plant cells only found in plant cells only found in animal and plant cells found in animal and plant cells found in animal and plant cells storage space a jelly-like substance like a very thin bag a round structure inside the cell like a box with many large holes in it allow the plant to make food keeps the cell together and controls what goes in and out of the cell many of the cell s activities take place here the control centre of the cell filled with a liquid green discs supports the cell knowledge
7Ac/5 Odd cell out Look at each set of cells. Work out what each cell is and what it does (its function). Then decide which is the odd cell out, and explain why you think so. 1 2 3 4 knowledge
7Ad/6 Cells true or false? Name Class 1 Decide if each of the statements below is true or false. If a statement is false, change some of the words to make it correct. 2 Now look at each pair of statements, and decide if the second statement is an explanation for the first one. T F A B Muscle tissue allows us to move. Muscle cells always stay the same length. Does B explain A? Yes or no? C D Root hair cells absorb air from the soil. Root hair cells are adapted to their function by having a small surface area. Does D explain C? Yes or no? E F Nerve tissue carries blood around the body. The heart includes nerve tissue and muscle tissue. Does F explain E? Yes or no? G H Ciliated epithelial cells help to keep the stomach clean. Cilia on the cells can move. Does H explain G? Yes or no? knowledge
7Ae/10 Flower cards A B C D E F stamen stigma style sepal ovary petal pollination fertilisation dispersal seeds are spread by animals, wind or water insects or the wind take pollen from one flower to another pollen reaches the ovum (egg) and joins with it knowledge, revision
7Ae/11 Cells question loop What does a nucleus do? The cilia wave to move dirt out of the lungs. How are xylem cells adapted to their function? A cell splits up to form two daughter cells. What do ciliated epithelial cells do? Make food by photosynthesis. How are new cells made? A group of cells of the same type working together to do a job. What do chloroplasts do? A piece of glass that a cell is put onto. What is a tissue? Makes and destroys substances. What is a microscope slide? The anther. What does the liver do? It holds the leaves in place and carries substances around the plant. Which part of a flower makes pollen grains? Supports the cell. What is the function of the stem in a plant? Nucleus, cytoplasm, cell surface membrane. What does the cell wall do? Cells are very small. Name three parts of an animal cell. They can change length. Why do we need to use microscopes to look at cells? Cell wall, vacuole, chloroplasts. How are muscle cells adapted to their function? Carry water up a plant. Name three cell parts that are only found in plant cells. They are hollow. What do xylem tubes do? A group of different tissues that work together. DO NOT MAKE A DOUBLE SIDED COPY OF THIS WORKSHEET
7Ae/11 Cells question loop (continued) What is an organ? Controls what goes in and out of the cell. Which organ system are the lungs part of? A pollen tube grows down the style. What does the cell surface membrane do? When a pollen grain joins with an ovum (egg). How does the pollen nucleus reach the ovary? Carry messages around the body. What does fertilisation mean? The digestive system. What do nerve cells do? When a pollen grain is moved from one flower to another. Which organ system is the stomach part of? By the wind or by insects. What does pollination mean? They have a lot of chloroplasts. How can pollen get from one flower to another? The circulatory system. How are palisade cells adapted to their function? It grows into a seed. Which organ system is the heart part of? The stigma. What happens to an egg after it has been fertilised? Digests and absorbs food. Where does the pollen need to land to fertilise a flower? The breathing system. What is the function of the small intestine? Controls a cell. knowledge, revision