CBSE Important Questions for Class 10 Science Chapter 7 Control and Coordination
Control and coordination class 10 important questions with answers explain how organisms trigger precise movements in response to their environment. This chapter covers the human nervous system, the intricate structure of neurons, and the chemical messengers known as hormones in plants and animals. Understanding these biological processes is vital for students to grasp how living beings maintain internal equilibrium.
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How Our Body Talks Control and Coordination Class 10 Important Questions with Answers
Our body has a special way to send messages. It uses tiny cells called neurons. Think of them like wires in a house. They carry small electric shocks to tell your legs to run or your eyes to blink. These messages move very fast so you can react to things quickly.
The Parts of a Message Cell
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Dendrites: These are like little arms that catch the message.
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Cell Body: This is the main part of the cell that holds everything together.
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Axon: This is a long tail that sends the message to the next cell.
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Synapse: This is a tiny gap between cells where the message jumps across.
The Fast Move: Reflex Action
Sometimes you move without even thinking. If you touch a hot cup, you pull your hand away fast. This is called a reflex action. The message goes to your spinal cord and back to your arm before your brain even feels the heat. This keeps you safe from getting hurt.
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Plant Power in Control and Coordination Class 10 Important Questions with Answers PDF
Plants don't have brains or nerves, but they still move! They grow toward the sun or push their roots down for water. You will see these ideas a lot in the control and coordination class 10 important questions with answers pdf. Plants use special juices called hormones to do this.
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Why it Moves |
What it is Called |
What Happens? |
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Sunlight |
Phototropism |
The stem grows toward the window. |
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Ground |
Geotropism |
The roots grow down into the dirt. |
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Water |
Hydrotropism |
The plant "looks" for water in the soil. |
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Touch |
Thigmotropism |
A vine wraps around a stick. |
Special Plant Juices (Hormones)
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Auxin: This helps the tips of the plant grow tall.
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Gibberellins: These help the stems get thick and long.
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Cytokinins: These help the plant make new cells very fast.
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Abscisic Acid: This tells the plant to stop growing and let leaves fall off.
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Learning from Control and Coordination Class 10 Important Questions with Answers MCQ
Your body has "messenger chemicals" called hormones. They travel in your blood to tell different parts of your body what to do. When you practice control and coordination class 10 important questions with answers mcq, remember that hormones work slower than nerves but their effects last longer.
Important Glands in Your Body
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Pituitary Gland: This is near your brain. It tells you when it is time to grow tall.
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Thyroid Gland: This is in your neck. It helps you use the energy from your food.
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Adrenal Gland: These sit on your kidneys. They help you when you are scared or excited.
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Pancreas: This is near your tummy. It keeps the sugar in your blood at the right level.
The Check-up System
Your body is very smart. It knows exactly how much hormone to make. If there is too much sugar, the body makes more insulin. Once the sugar is gone, it stops. This is like a heater that turns off when the room is warm enough. It keeps everything balanced.
Easy Help for Control and Coordination Class 10 Important Questions with Answers PDF Download
The brain is the boss of your body. It has different rooms for different jobs. To learn these parts, you can get a control and coordination class 10 important questions with answers pdf download. Seeing the pictures makes it much easier to remember where everything is.
Three Main Parts of the Brain
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Forebrain: This is the big front part. It helps you think, learn, and remember your name.
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Midbrain: This middle part helps you move your eyes and ears.
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Hindbrain: This back part helps you walk straight and keeps your heart beating.
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Skull: This is the hard bone box that protects your soft brain.
Keeping the System Safe
Your brain and spinal cord are very soft. To keep them safe, they are wrapped in bone. Your skull protects your brain. Your backbone protects your spinal cord. There is also a special water-like fluid inside to act like a soft pillow if you bump your head.
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Final Tips for Control and Coordination Class 10 Important Questions with Answers PDF MCQ
When you look at control and coordination class 10 important questions with answers pdf mcq, try to think about how you move. Some things you choose to do, like kicking a ball. Other things just happen, like your heart beating. This is how the body stays organized.
Nerves vs. Hormones
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Nerves: They use electricity. They are super fast but don't last long.
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Hormones: They use chemicals in the blood. They are slower but work for a long time.
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Target: Nerves go to one spot. Hormones can go everywhere in the body.
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Job: Nerves are for quick moves. Hormones are for big changes like growing up.
CBSE Important Questions for Class 10 Science Chapter 7 FAQs
Q1: What does the tongue do for the body?
The tongue has receptors that help us find out if food is sweet, salty, or sour.
Q2: Why does the "Touch-Me-Not" plant close up?
When you touch it, the leaves lose water and get soft. This makes them fold up quickly to stay safe.
Q3: What does the Medulla do?
The medulla is in charge of things you don't think about, like breathing and blood pressure.
Q4: Why do we need iodine in our salt?
Iodine helps our neck gland make a hormone. Without it, your neck can get a big bump called a goitre.
Q5: How do plants grow toward the light?
A hormone called auxin moves to the dark side of the plant. It makes that side grow more, which pushes the plant toward the sun.
