Presentation is loading. Please wait.

Presentation is loading. Please wait.

Intermediate 1 Unit 3a & b Photosynthesis, Respiration & Fertilisers 123 45 67 89 10 111213 14 15 22 23242526 16171819 2021 27.

Similar presentations


Presentation on theme: "Intermediate 1 Unit 3a & b Photosynthesis, Respiration & Fertilisers 123 45 67 89 10 111213 14 15 22 23242526 16171819 2021 27."— Presentation transcript:

1 Intermediate 1 Unit 3a & b Photosynthesis, Respiration & Fertilisers

2 Name the carbohydrate produced by photosynthesis. Glucose

3 Name the process which produces glucose in green plants. Photosyntheis

4 Name the chemical in leaves which absorbs light.? Chlorophyll

5 Name the two substances absorbed by green plants during photosynthesis? Carbon dioxide and water

6 Name the process that animals can obtain energy by. Respiration

7 Name the products of respiration. Carbon dioxide and water

8 Name the gas produced during photosynthesis. Oxygen gas

9 Why do animals need energy? Warmth and movement

10 What are the two reactants in respiration? Glucose and oxygen

11 Name the gas which causes the greenhouse effect. Carbon dioxide

12 Give two reasons why the level of carbon dioxide in the atmosphere is increasing More fossil fuels burned. Clearing of forests.

13 What is global warming? The atmosphere retains more of the sun’s heat energy

14 Name the process which occurs when the atmosphere retains more of the sun’s heat energy? Global Warming

15 Global warming is caused by an increase in which gas? Carbon dioxide

16 What is the test for carbon dioxide gas? Turns limewater milky

17 What is a pesticide, fungicide and herbicide used for? Pesticide - kill pests/insects Herbicide - kill weeds Fungicide - prevent diseases

18 Suggest another way of controlling pests. Natural predators e.g birds eating caterpillars

19 Name the three essential elements needed for healthy plant growth Nitrogen, potassium and phosphorus

20 Why are fertilisers added to soil? To put essential elements back into the soil.

21 To be effective should fertilisers be soluble or insolube? Soluble

22 Some plants such as clover, beans and peas can convert nitrogen from the air into nitrates. Which part of the plant is able to do this? Root nodules

23 What can happen to the water in rivers and lochs when high levels of nitrates get into the water. The water becomes lifeless

24 The main artificial fertilisers include ammonium and nitrate compounds. Name the other two compounds used as fertiliser. Potassium compounds and phosphate compounds.

25 Give two examples of natural fertilisers? Manure and compost

26 Why has there been an increase in the use of artificial fertilisers? More food is needed for an increasing population.

27 What does the harvesting of crops prevent from happening? Essential elements being returned to the soil

28 How are the essential elements taken in by the plant? Through the roots as compounds

29 Intermediate 1 Unit 3a & b


Download ppt "Intermediate 1 Unit 3a & b Photosynthesis, Respiration & Fertilisers 123 45 67 89 10 111213 14 15 22 23242526 16171819 2021 27."

Similar presentations


Ads by Google