Lesson 2

Theoretical part

Animals cannot live without water. Some animals and earth creatures and a variety of natural phenomena depend on water. Without water, plants cannot grow on the earth and animals cannot survive. A plant can only take up nutrients in the soil in a solution dissolved in water.

For example: fish live in water. Plants get their nutrients from the soil through water. Some plants, especially the lower plants, like mosses, kumas, though they have been left for a long time in waterless conditions and have dried out, continue living again when they get enough of the next moisture. Similarly, some ephemera – derana, etc., have been known to regain their life after complete drying out when they become wet again. But most plants, especially agricultural crops, require water to be continuous for life. If water is scarce for some time, it will worsen the yield of most crops. Therefore there should not be a deficit /deficit/ in the water balance of the plant – in the ratio of the amount of water of the plant to the amount of water infiltration.

The importance of water for plants:

• Dissolution of minerals in the soil absorbed by plants
• Role of water in maintaining the stem of a plant at moderate temperature.
• Ensuring turgor conditions
• Transport of metabolic products via conductive pathways on the plant stem via the vegetative organs.
• Factor in the processes of assimilation and dissimilation and the material required for them.

Research part

Over a period of 2 weeks, observe how many cm the plants that were watered in the two different ways have grown, at what time, and how many ml of water were poured out.

Research Table 1

	Drip irrigation			Traditional watering
Watering time
Water volume
Length of plant

Questions:

• What changes have you noticed in the crops?
• How much have you increased the amount of water and the effect of watering differences on plant growth?
• What is drip irrigation and what are the advantages?
• What is the difference between slimming irrigation and drip irrigation?
• Describe the physical processes involved in drip irrigation?

Conclusion

In this lesson the students planted seeds and grew plants. And learned about the necessary conditions for good plant growth.

In this project, each pupil will be awarded a STEAM category title:

– You have sown a seed and grown a plant, you are a real gardener!

– You did plant research and created a drip irrigation system – you are a real biologist!

– Working in pairs, you listened to your partner and worked together to develop group work skills. During the practical work you showed your creativity and skills.

Evaluation