Leaf Deep Using the diagrams on the worksheet , draw the missing structure onto the diagram. Complete the gaps!

Plant Nutrients Lesson Objectives C/W Date:…………………… Plant Nutrients Lesson Objectives To describe the role of key plant nutrients. To explain how deficiency of nutrients impacts on plant growth. To explain the role of fertilisers. Success Criteria Name essential nutrients needed. List the problems if the nutrients are deficient ‘lacking’.

Transpiration Experiment Time to collect results!

What is transpiration? Transpiration is caused by the evaporation and diffusion of water from inside the leaves. This creates a shortage of water in the leaf, so more water is drawn up through the xylem vessels to replace it. This means more water is being drawn up from the roots, causing a constant transpiration stream of water through the plant.

Experiment Time! Time to weigh leaves that you set up last time!

Results Table Leaf with no Vaseline (g) Leaf with Vaseline on the bottom (g) Leaf with Vaseline on the Top (g)

What is transpiration? Transpiration is a side effect of the way leaves are adapted for photosynthesis. - Stomata: gas exchange - As there is more water inside the plant than in the air outside, the water escapes from the leaves through the stomata. Transpiration stream does provide a constant supply of water for photosynthesis.

Key Questions What nutrients do plants need to grow properly? What can be added to soils to increase nutrient content?

Essential Nutrients Nitrates Phosphates Potassium

Look at the plants on your worksheet Write 2 differences between the plants for each pair. 4 minutes!

What happens if plants do not get enough minerals? Plants do not grow properly if they are deprived of minerals and begin to look unhealthy. If a plant does not get enough of a mineral it is said to have a mineral deficiency. Do mineral deficiencies affect a plant in the same way?

No Nitrogen! upper leaves pale green lower leaves yellow and dead Nitrogen is used for making leaves and is probably the most important mineral for plant growth. upper leaves pale green lower leaves yellow and dead weak stem

No Phosphorus! purple leaves small roots Phosphorus is used for making roots and is important for all the other minerals used by plants. purple leaves small roots

No Potassium! poor flower and fruit growth yellow leaves Potassium is used for making flowers and fruit, so crops are given extra potassium before they start to fruit. poor flower and fruit growth yellow leaves with dead spots

No Magnesium! Magnesium is used for making chlorophyll and so is vital for the process of photosynthesis. upper leaves normal (leaves turn yellow from bottom upwards) lower leaves pale green or yellow

No Nitrogen! upper leaves pale green lower leaves yellow and dead Nitrogen is used for making leaves and is probably the most important mineral for plant growth. upper leaves pale green lower leaves yellow and dead weak stem

No Phosphorus! purple leaves small roots Phosphorus is used for making roots and is important for all the other minerals used by plants. purple leaves small roots

No Potassium! poor flower and fruit growth yellow leaves Potassium is used for making flowers and fruit, so crops are given extra potassium before they start to fruit. poor flower and fruit growth yellow leaves with dead spots

No Magnesium! Magnesium is used for making chlorophyll and so is vital for the process of photosynthesis. upper leaves normal (leaves turn yellow from bottom upwards) lower leaves pale green or yellow

Complete table Use the words below to help! Roots chlorophyll leaves fruits poor growth leaves purple yellow yellow dead

Plant and minerals summary Complete this table of plant mineral needs and deficiencies. Mineral Use in plant Deficiency signs nitrogen phosphorus potassium magnesium making l…………….. stunted g……… and yellow l………… making r………… p…… roots and p………. leaves making f………… and fruits y………. leaves with d………… spots making c………….. leaves turn y…….. from the bottom

Plant and minerals summary Complete this table of plant mineral needs and deficiencies. Mineral Use in plant Deficiency signs nitrogen phosphorus potassium magnesium making leaves stunted growth and yellow leaves making roots poor roots and purple leaves making flowers and fruits yellow leaves with dead spots making chlorophyll leaves turn yellow from the bottom

Plant and minerals summary Complete this table of plant mineral needs and deficiencies. Mineral Use in plant Deficiency signs nitrogen phosphorus potassium magnesium making leaves stunted growth and yellow leaves making roots poor roots and purple leaves making flowers and fruits yellow leaves with dead spots making chlorophyll leaves turn yellow from the bottom

Plant and minerals summary Complete this table of plant mineral needs and deficiencies. Mineral Use in plant Deficiency signs nitrogen phosphorus potassium magnesium

Plant nutrient practical Biology for You new edition: page 193 Experiment 12.16: The effects of nutrients on growth.

What are fertilisers?

Artificial Fertiliser What are fertilisers? Something that can be added to the soil to increase the amount of nutrients available in the soil. Artificial Fertiliser (Manufactured) Natural Fertiliser

Fertiliser Practical Teacher Guidance There are different practical's you can do: Worksheet ‘What does a fertiliser do?’ and has questions to go with it.There is a practical worksheet that runs through the write-up as well. Which fertiliser is the best? 9Db/1 Biology for You new edition: page 193 Experiment 12.16: The effects of nutrients on growth.

Fertiliser with pondweed Fertiliser Practical Prediction Diagram Conclusion Water with pondweed Fertiliser with pondweed

Artificial Fertiliser What are fertilisers? Something that can be added to the soil to increase the amount of nutrients available in the soil. Artificial Fertiliser (Manufactured) Natural Fertiliser

Fertilisers Can be added to the soil Examples: Manure, Compost Natural Fertiliser Artifical Fertiliser (Manufactured) Can be added to the soil Examples: Manure, Compost Restore essential nutrients Can be added to the soil Contain mineral salts NPK: Nitrogen Phosphorus Potassium * Replace mineral salts that have been taken out by crop plants. Decomposers, which are microbes and other small organisms break down the manure and release salts back into the soil.

What are fertilisers?

Essential Ingredients for a fertiliser Nitrates: Needed to make proteins for growth Phosphates: Needed to encourage the growth of roots. Potassium: Sometimes called potash Needed to make chlorophyll Encourages flowering. “Never Push Pandas”

Why is nitrogen important to plants?

problems with fertilisers? What are the problems with fertilisers?

Plant Nutrients Lesson Objectives C/W Date:…………………… Plant Nutrients Lesson Objectives To describe the role of key plant nutrients. To explain how deficiency of nutrients impacts on plant growth. To explain the role of fertilisers. Success Criteria Name essential nutrients needed. List the problems if the nutrients are deficient ‘lacking’.

Mineral deficiency experiment