CBSE Class 10 Science Control and Coordination MCQs

Control and Coordination in the human body refer to the regulation and integration of different activities through the nervous system and hormones. This chapter explains how the nervous system, endocrine system, and various organs coordinate and control the body's functions.

Some key topics that are frequently covered in MCQs include:

• Nervous System (Structure of the brain, spinal cord, neurons, and their functions)

• Reflex Arc

• Endocrine System (Hormones, glands like thyroid, pituitary, pancreas, etc.)

• Coordination in Plants (Hormones like auxins, gibberellins)

• Types of Nerve Cells (Sensory neurons, motor neurons, interneurons)

Here are a few sample MCQs:

Q1: What is the function of the myelin sheath in a neuron?

• a) Conducts nerve impulses faster

• b) Protects the nerve cell

• c) Stores energy

• d) All of the above

Answer: a) Conducts nerve impulses faster

Q2: Which part of the brain controls balance and muscle coordination?

• a) Cerebellum

• b) Medulla oblongata

• c) Cerebrum

• d) Hypothalamus

Answer: a) Cerebellum

Q3: Which hormone is responsible for regulating the blood sugar level?

• a) Thyroxine

• b) Insulin

• c) Adrenaline

• d) Estrogen

Answer: b) Insulin

• Understand the concepts: Rather than just memorizing, ensure you understand the functions of the nervous and endocrine systems.

• Focus on diagrams: MCQs often test the understanding of diagrams (like the structure of neurons, brain, or spinal cord).

• Practice past papers: Solve previous years’ MCQs to get familiar with the exam pattern and frequently asked questions.

• Learn key terms: Knowing definitions and terms like “synapse,” “neurotransmitter,” “hormones,” and “receptors” is essential.

In plants, hormones like auxins, gibberellins, and cytokinins help in regulating growth, flowering, and fruiting. MCQs often ask about their roles:

• Auxins: Promote cell elongation, especially in shoots.

• Gibberellins: Help in seed germination and stem elongation.

• Cytokinins: Promote cell division.

• Nervous system: Works quickly and uses electrical impulses to transmit signals across neurons.

• Endocrine system: Works more slowly by releasing hormones into the bloodstream to regulate body processes.

Reflex actions are rapid, involuntary responses to stimuli. They protect the body from harm. MCQs might ask about reflex actions, their pathway, and components (receptor, sensory neuron, spinal cord, motor neuron, and effector).

Yes, understanding the brain's structure (like the cerebrum, cerebellum, and medulla oblongata) is crucial. MCQs often test knowledge on:

• The role of different brain regions (e.g., cerebrum controls voluntary actions, cerebellum controls balance).

• The function of the hypothalamus in regulating body temperature.

• Overthinking: Sometimes, the simplest answer is the correct one. Don’t overcomplicate.

• Misreading the question: Pay attention to keywords like “not,” “except,” and “only.”

• Skipping practice: Practice as many MCQs as possible to familiarize yourself with the format and improve your speed.

• Practice time-bound mock tests: It helps in managing time during exams.

• Eliminate wrong options: If you don’t know the answer, try eliminating the clearly wrong options, and focus on the remaining ones.