L12 - How Do Plants Prevent Infection? (PDF)

How do plants prevent Saturday 4 Ja nuary 2025 1 infection? What vector spreads the malaria mosquitos pathogen? 2 What type of pathogen causes A protist malaria? 3...

How do plants prevent Saturday 4 Ja nuary 2025 1 infection? What vector spreads the malaria mosquitos pathogen? 2 What type of pathogen causes A protist malaria? 3 How does the immunes system help Destroys pathogens that enter resist disease? the body 4 What type of specialist immune White blood cells cells destroy pathogens? Phagocytosis, producing 5 Name three ways white blood cells antibodies, producing anti- resist infection toxins CHALLENGE: How do malaria spread the pathogen Activating prior knowledge: Virus Bacteria fungus Protists Activation & check of prior knowledge: What can become diseased? 1) Only humans can catch 2) All animals can catch diseases diseases but not plants or bacteria 3) All living things can become 4) Only animals and plants can infected by diseases catch diseases. (TMV) Tobacco mosaic virus (Rose) Black spot fungus  Tobacco Black spot mosaic virus fungus Virus fungus Pathogen type Wind or insects water Spread by Black or Discolourati purple on of spots on leaves Symptom leaves s Reduces Reduces photosynthe photosynthe Effect on sis sis growth reduces reduces growth growth  Tobacco Black spot mosaic virus fungus Pathogen Virus fungus type Spread by Wind or insects water Symptom Discolourati Black or s on of purple leaves spots on leaves Effect on Reduces Reduces growth photosynthe photosynthe sis sis reduces reduces growth growth  How do plants prevent infection? The statements are about communicable diseases. Plants and animals can both suffer from communicable diseases TRU Plants have no defences against disease E FAL Plants have physical and chemical defences but no SE immune system TRU All plant diseases effect the leaves of the plant E FAL Plants and animals suffer from the same SE FAL communicable diseases SE CHALLENGE: Justify why any statements you have marked as false are incorrect  Complete first: Complete once checked blue box Pathogens (can / cannot) infect plants answers: 1. Can plants become infected by (just / not just) animals. Pathogens pathogens? yes that inflect plants include bacteria, viruses, fungi and protists. 2. What typesviruses, bacteria, of pathogen can fungi affect and Some examples of plant diseases plants? protists include: By insects Tobacco mosaic virus (TMV) which is 3. How is tobacco mosaic virus spread? caused by a (bacteria / virus) spread by insects. It causes Discolouration 4. What of leaves are the symptoms of tobacco discolouration of leaves and mosaic virus? (increases / reduces) Spread by water or wind photosynthesis. 5. How is black spot fungus spread? Black spot fungus is caused by a Black or purple spots on leaves (bacteria / fungus) spread by water 6. What are the symptoms of black spot or wind. It causes (black / yellow) or fungus? purple spots on leaves and (increases / reduces) CHALLENGE: Why do plants need to photosynthesis? photosynthesis. Explain why these diseases will reduce the growth of a plant. Independent Practice