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Bella S1
Environment and You
| Question | Answer |
|---|---|
| What is a producer? | A green plant that can produce its own food by photosynthesis |
| What are the raw materials that plants use up when they photosynthesise? | Carbon dioxide & Water |
| What are the products of photosynthesis? | Sugar (glucose) & Oxygen |
| Where in a plant cell does photosynthesis take place? | In the chloroplasts. |
| What is a consumer? | An organism that eats another organism to get its energy. |
| What is a population? | The NUMBER of organisms of one type in an ecosystem. |
| What is the community? | All of the organisms in an ecosytem (plants, animals and microbes). |
| What is a habitat? | The place where an organism lives. |
| What does a herbivore eat? | Plants |
| What does a carnivore eat? | Animals |
| What does an omnivore eat? | Plants & Animals |
| What do the arrows in a foodchain show? | The direction of energy flow. |
| What is a predator? | An animal that hunts and eats other animals. |
| What is a prey? | An animal that is hunted and eaten by another animal. |
| What happens to a predator in a food web if one of it's prey dies out? | Its population decreases |
| What happens to a prey in a food web if one of it's predators dies out? | Its population increases |
| What happens to a predator in a food web if one of it's prey population increases? | Its population increases |
| What processes increase the concentration of CO2 in the atmosphere? | Respiration and Combustion (and Decomposition) |
| What organisms are responsible for Decomposition | Micro-organisms (bacteria) |
| What natural process removes CO2 from the atmosphere? | Photosynthesis |
| What do plants store sugar (glucose) as? | Starch |
| What is a chemical test for starch? | Iodine test (iodine turns blue-black) |
| What event do we associate with increasing CO2 levels? | Global warming or Greenhouse effect |
| What form of nitrogen can plants absorb through their roots? | Nitrate. |
| What do plants produce using Nitrates? | Amino acids |
| What do plants make from amino acids? | Protein |
| What is routinely added to the soil in farms to increase plant growth? | Fertilisers |
| How do fertilisers increase plant growth? | They contain Nitrate. |
| What can organic farmers add to their soil to increase plant growth?? | Manure |
| What type of chemical can be sprayed ocer crops to kill weeds? | Herbicide |
| What can organic farmers spray onto crops to control weed growth? | Vinegar or soap |
| What type of chemical can be sprayed over crops to kill insects? | Pesticides (insecticides) |
| What can organic farmers do to reduce insect numbers? | Introduce the insect's natural predator e.g. ladybirds eat greenfly (aphids) |
| What can be used to sample the variety and number of insects in an area? | Pitfall traps |
| Why should pitfall traps be checked regularly? | To stop the insects eating each other. |
| Why should pitfall traps be camouflaged? | To stop birds seeing and eating the trapped insects. |
| Why should pitfall traps be "flush" with the soil surface? | So that the insects can fall into the trap. |
| What can be used to sample the variety and number of plants in an area? | A quadrat |
| How many quadrats fit into 1 metre squared? | 4 |
| How many quadrats would fit into an area of 125 metres squared? | 500 |
Created by:
nscobie
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