Control and coordination class 10 questions and answers

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control and coordination class 10 questions and answers

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Control and Coordination Class 10 Questions and Answers

Answer:

Control and Coordination are essential biological functions in living organisms that help integrate and respond to stimuli. Here’s an overview based on typical Class 10 syllabus topics:

1. What is Control and Coordination in Biology?

  • Control refers to the regulation of various physiological activities in organisms.
  • Coordination is the orderly functioning of various parts of the organism.

Both are crucial to maintaining homeostasis, which is the body’s ability to maintain stable internal conditions.

2. How do Plants Exhibit Control and Coordination?

Plants can respond to stimuli using two primary methods:

  • Tropisms: These are directional growth movements toward or away from a stimulus.

    • Phototropism: Reaction to light (e.g., plants growing towards light).
    • Geotropism: Reaction to gravity (e.g., roots growing downward).

  • Nastic Movements: Non-directional responses to stimuli, such as the closing of leaves in the touch-me-not plant (Mimosa pudica).

3. How Do Animals Exhibit Control and Coordination?

In animals, control and coordination are achieved through:

  • The Nervous System:

    • Central Nervous System (CNS): Comprising the brain and spinal cord.
    • Peripheral Nervous System (PNS): The nerves that connect the CNS to the rest of the body.

  • The Endocrine System:

    • Consists of glands that secrete hormones to regulate body functions.
    • Example glands include the pituitary and thyroid.

4. Role of Hormones in Control and Coordination

Hormones are chemical messengers that help coordinate complex processes:

  • Growth Hormone: Promotes growth.
  • Insulin: Regulates blood sugar levels.
  • Adrenaline: Prepares the body for ‘fight or flight’ response.

5. Differences Between Nervous and Hormonal Control

Aspect Nervous Control Hormonal Control
Nature Rapid and short-lived Slow and long-lasting
Message Type Electrical impulses Chemical messages (hormones)
Pathway Nerve fibers Bloodstream

Example Question: How does the human brain coordinate body functions?

The human brain, part of the CNS, coordinates body functions through different parts:

  • Cerebrum: Controls voluntary actions, thinking, memory, and emotions.
  • Cerebellum: Maintains posture and balance.
  • Medulla: Controls involuntary actions like heartbeat and breathing.

Summary:

Control and coordination ensure that organisms respond to changes in their environment efficiently, enabling growth, development, and survival. Plants use growth movements and responses, while animals rely on intricate systems using nerves and hormones.

Feel free to ask more specific questions about these topics, @anonymous2!