Grade 5 | Science | Unit 1 - Concept 1 - Lesson 3 - Part (1/2) - Sunlight : A Basic Need скачать в хорошем качестве

Grade 5 | Science | Unit 1 - Concept 1 - Lesson 3 - Part (1/2) - Sunlight : A Basic Need

لينك تحميل الملزمة https://drive.google.com/file/d/1Vz9C... لينك التليجرام https://t.me/mrahmedelbashagroup In This Lesson Photosynthesis process It is the process through which plants use the energy in sunlight to make their own food. Green plants use their leaves to collect sunlight and carbon dioxide from air. █ Inside the green plant, sunlight allows carbon dioxide to combine with water to make sugar, which gives the plant the energy it needs to grow. ► Activity : we will do an experiment to show the effect of light on plant growth. ► Tools : Two plastic cups Two bean seeds Potting soil Water ► Steps : 1. Add soil to the two cups, place the bean seeds on the soil, one per cup and cover the seeds with about 2 centimeters of soil. 2. Add the same amount of water to each cup to moisten the soil. 3. Place the red cup where it will receive light and place the blue cup in the dark. 4. Water both plants regularly and observe them along two weeks. ► Observations After two weeks, we observe that: The plant in the red cup grow taller than the plant in the blue cup. The plant in the red cup has four leaves with dark green color, while the plant in the blue cup has two small leaves with pale green color. ► Conclusions Light is a basic need for the plants, like water, air and nutrients. Light is important to plant growth because plants use light to make their own food, so the plant without light does not grow well because it had less food. Plant Structure Basic needs All living organisms have basic needs that they must meet to survive. For example : ▌Humans need water, air and food to live, while all plants need water and air to survive. ▌Plants and humans are very different because plants use sunlight to make their own food from air and water, but humans get their food from plants and animals. Plant structure 1. Xylem ▌Plant's roots absorb water and nutrients from the soil and carry them to the rest of the plant. ▌Water and nutrients move up the plant's stem through tubes or vessels called xylem. 2. Stomata: • Leaves collect sunlight. • Also, the air that plant need moves into the leaves through tiny openings called stomata. بالتوفيق مستر احمد الباشا