P3 Fungi and Bacteria (Concept Map)
Primary 3 Science — Concept Map
Created by Miss Clarissa Ng · www.clartutors.com
Fungi and bacteria — tiny living things
Two groups that cannot make their own food, and can be useful or harmful
Fungi and bacteria cannot make their own food — they take it from other living or dead things.
Fungi reproduce by spores: under the cap in a mushroom, in a spore bag in a mould.
Both need warmth, air and moisture; fungi prefer the dark, and warmth speeds up bacterial growth.
Both are useful — food, baking, medicine, digestion — and both break down dead matter into the soil.
Compare a fern with a fungus: both reproduce by spores, but only the fern makes its own food.
What fungi are like
Food from othersfungi cannot make their own food, so they obtain it from other living or dead things
Reproduce by sporesfungi reproduce by spores rather than by seeds
What they needfungi grow with warmth, air and moisture, and they prefer dark places
They cannot movefungi cannot move themselves from place to place
Three types of fungi
Mushroomin a mushroom the spores are found under the cap, in the gills
Mouldin a mould the spores are held in a spore bag at the end of the stalk
Yeasta single-celled fungus, used to make bread
Fungi: useful or harmful
Foodmushrooms and truffles are eaten as food
Baking and medicineyeast makes bread rise, and fungi are used to make medicine
In naturefungi break down dead plants and animals into simpler substances that return to the soil
What bacteria are like
Too small to seebacteria can only be seen with a microscope, so they are micro-organisms
Food from othersbacteria cannot make their own food either; they obtain it from other living or dead things
What they needbacteria need air, food and water, like all living things
Warmth speeds growthwarm conditions increase how quickly bacteria grow
Bacteria: useful or harmful
In our bodiesbacteria in the body help us digest food
Food and medicinebacteria are used to make cheese and yoghurt, and medicine such as insulin
In naturelike fungi, bacteria break down dead plants and animals into simpler substances
Mould and a fair test
Conditions neededmould grows when there is warmth, moisture and air
Prefers the darkbread kept in a cupboard grew more mould than bread left on the table
Slowing it downfood kept dry, cool or in the light grows mould more slowly