CBSE
CBSE Class 9 Science: Tissues
CBSE Class 9 Science Tissues audio notes in Hindi story format.
4-minute audio preview
CBSE focus
In Class 9 Science Chapter 6, "Tissues," we begin by imagining two very different living worlds: a tiny Amoeba floating in pond water and a tall human being walking and talking. This chapter introduces the fascinating concept of tissues, explaining how multicellular organisms like humans have specialized cells grouped into tissues to perform specific functions efficiently. Harshali Academy’s detailed explanation of "Tissues" helps students understand the division of labour among cells, comparing plant and animal tissues. Parents and teachers will find this resource valuable for clarifying key concepts and preparing for exams. Listen to Harshali Academy to grasp the full story of tissues and their importance in life. CBSE learners can use this page to understand Tissues, prepare short answers, and revise the main ideas before class tests.
Hindi explanation
कक्षा 9वीं विज्ञान के अध्याय 6, ऊतक में हम दो जीवित दुनियाओं की कल्पना करते हैं। एक में एककोशिकीय अमीबा है और दूसरी में बहुकोशिकीय मानव। इस अध्याय में ऊतकों की भूमिका और उनके प्रकारों को समझाया गया है। यह अध्याय छात्रों को कोशिकाओं के समूह और उनके कार्यों के बारे में ज्ञान देता है। माता-पिता और शिक्षक भी इसे पढ़कर बच्चों की मदद कर सकते हैं।
Key concepts from this chapter
- Difference between unicellular and multicellular organisms
- Definition of tissue as a group of similar cells performing a function
- Division of labour among cells in multicellular organisms
- Comparison of plant and animal tissues
- Types of plant tissues: meristematic and permanent tissues (briefly introduced) and their functions in growth and support in plants and animals
Important exam questions with answers
What is a tissue? Explain with an example.
A tissue is a group of similar cells that work together to perform a specific function. For example, muscle tissue helps in movement. (2 marks)
How do plant tissues differ from animal tissues?
Plant tissues often include dead cells for support, like xylem, and growth occurs in specific regions (meristematic tissues). Animal tissues are mostly living and flexible, supporting movement and quick response. (3 marks)
What is the utility of tissues in multicellular organisms?
Tissues allow division of labour by grouping cells with similar functions, making the organism more efficient and organized. This helps in performing complex functions smoothly. (2 marks)
FAQ
Why do multicellular organisms have tissues?
Multicellular organisms have tissues to divide labour among cells, making functions more efficient. You can listen to the full explanation on Harshali Academy.
What are meristematic tissues?
Meristematic tissues are regions in plants where cells divide continuously for growth. Harshali Academy’s audio lessons explain this concept clearly.
Can a single cell perform all functions of life?
No, a single cell like in Amoeba performs all functions alone, but in multicellular organisms, cells specialize and form tissues. Harshali Academy helps understand this difference well.
How do muscle and nerve tissues help animals?
Muscle tissues contract to enable movement, and nerve tissues send signals to control actions quickly. Harshali Academy’s lessons cover these tissues in detail.
Are all plant tissues living?
No, many plant tissues like xylem are made of dead cells that provide support. Harshali Academy explains this distinction clearly.
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