This video lesson teaches us ciculatory system and the excreatory system of living beings
Introduction to CBSE Class 7 Science Chapter "Transportation in Animals and Plants"
“Transportation in Animals and Plants” is a comprehensive chapter in the CBSE Class 7 Science curriculum that introduces students to the circulatory and transport mechanisms within living organisms. The chapter begins with the human circulatory system, explaining the roles of the heart, blood, and blood vessels in transporting nutrients, oxygen, and waste materials.
It delves into the structure and function of the heart, detailing how this vital organ pumps blood throughout the body. Blood components such as red blood cells, white blood cells, platelets, and plasma are described, along with their specific functions. The concept of blood groups and the significance of the Rh factor are also touched upon, providing students with a clear understanding of blood transfusion principles.
Moving on to plants, the chapter explains how water and nutrients are transported through xylem and phloem vessels, and it outlines the processes of transpiration and photosynthesis. The chapter emphasizes the importance of these processes in the survival and growth of plants and, by extension, the ecosystems that depend on them.
Assignments for CBSE Class 7 Science Chapter “Transportation in Animals and Plants”
- Create a Model of the Heart: Using materials like clay or cardboard, construct a model of the human heart and label its parts.
- Experiment with Transpiration: Conduct an experiment using a potted plant to observe transpiration and record your findings.
- Blood Components Chart: Make a chart showing the different components of blood and their functions.
- Role Play on Circulation: Enact a play showing how the heart pumps blood throughout the body, illustrating the circulatory system.
- Plant Transportation System: Draw and label a diagram showing the transportation system in plants, including roots, stem, xylem, and phloem.
Conclusion The chapter “Transportation in Animals and Plants” is crucial in the CBSE Class 7 Science syllabus as it highlights the intricate systems that sustain life. Understanding how these systems function not only fascinates the curious mind but also builds a foundation for advanced studies in biology, health, and environmental sciences.
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Questions and Answers for CBSE Class 7 Science Chapter "Transportation in Animals and Plants"
- Q1: What are the main components of the human circulatory system?
ANS: The main components are the heart, blood, and blood vessels. - Q2: What role does the heart play in the circulatory system?
ANS: The heart acts as a pump that circulates blood throughout the body, supplying oxygen and nutrients, and removing waste products. - Q3: Can you name the different types of blood vessels?
ANS: The different types of blood vessels are arteries, veins, and capillaries. - Q4: What is transpiration in plants?
ANS: Transpiration is the process by which water evaporates from the leaves of plants, creating a pull that draws water upwards from the roots. - Q5: How do plants transport nutrients and water?
ANS: Plants transport water and minerals from the soil through the xylem vessels and distribute food produced in the leaves to other parts of the plant through the phloem vessels. - Q6: Why is blood grouping important?
ANS: Blood grouping is crucial for safe blood transfusions, as it prevents reactions that can occur when mismatched blood types are mixed. - Q7: Whatis the function of platelets in blood? ANS: Platelets play a critical role in blood clotting, which helps prevent excessive bleeding when injuries occur.
- Q8: What is the role of white blood cells? ANS: White blood cells are part of the immune system; they help protect the body against infections and fight off foreign invaders.
- Q9: How does the Rh factor influence blood transfusion? ANS: The Rh factor determines whether a person’s blood type is positive or negative. A mismatch in Rh factor can lead to serious reactions during a blood transfusion.
- Q10: Describe the process of photosynthesis in relation to plant transportation. ANS: Photosynthesis is the process by which plants make their food using sunlight, water, and carbon dioxide. The nutrients produced are then transported through phloem vessels to various parts of the plant.
