SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions | Assam Eduverse
SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions are prepared to help students understand nervous system and hormonal coordination for the HSLC examination. These SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions include theory-based questions, diagram-based questions, previous year questions (PYQs), and important MCQs.
The SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions strictly follow the latest SEBA (ASSEB) syllabus for 2026–27. Since the HSLC Science exam requires students to answer 45 MCQs, practising MCQs from SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions is essential.
Topics covered in SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions include reflex action, human brain, plant hormones, endocrine glands, coordination in animals and plants. Students searching for HSLC Science Chapter 7 Control and Coordination Important Questions or SEBA Class 10 Science Chapter 7 PYQs will find this resource highly useful.
SEBA Class 10 Science Chapter 7 Control and Coordination Important Questions with PYQs and MCQs
Table of Contents
A. Previous Year Questions with Answers
Q1. The plant hormone which stimulates cell division is — [HSLC 2015]
(i) Auxin
(ii) Cytokinin
(iii) Abscisic acid
(iv) Gibberellin
Answer: (ii) Cytokinin
Q2. The part of the brain which is responsible for maintaining equilibrium and posture of the body is — [HSLC 2016, 2019]
(i) Cerebellum
(ii) Medulla
(iii) Pons
(iv) Cerebrum
Answer: (i) Cerebellum
Q3. The hormone which causes wilting of leaves is — [HSLC 2017]
(i) Abscisic acid
(ii) Gibberellin
(iii) Auxin
(iv) Cytokinin
Answer: (i) Abscisic acid
Q4. The hormone produced by the pancreas that helps in regulating the blood sugar level is — [HSLC 2018]
(i) adrenalin
(ii) thyroxin
(iii) insulin
(iv) testosterone
Answer: (iii) insulin
Q5. Which of the following disease is caused due to the insufficient secretion of thyroxin hormone? [HSLC 2020]
(i) Beriberi
(ii) Goiter
(iii) Diabetes
(iv) Dwarfism
Answer: (ii) Goiter
Q6. The growth inhibiting hormone found to be present in plants is — [HSLC 2022]
(i) auxin
(ii) gibberellin
(iii) cytokinin
(iv) abscisic acid
Answer: (iv) abscisic acid
Q7. The gap between the two neurons is — [HSLC 2023]
(i) dendrite
(ii) synapse
(iii) axon
(iv) nerve ending
Answer: (ii) synapse
Q8. Which of the following is a plant hormone? [HSLC 2023]
(i) Insulin
(ii) Thyroxin
(iii) Oestrogen
(iv) Cytokinin
Answer: (iv) Cytokinin
Q9. The gap between two neurons is called _____ [HSLC 2024]
(A) dendrite
(B) synapse
(C) axon
(D) impulse
Answer: (B) synapse
Q10. Which of the following hormones promotes cell division in plants? [HSLC 2024]
(A) Cytokinin
(B) Oestrogen
(C) Thyroxin
(D) Insulin
Answer: (A) Cytokinin
Q11. Some of the voluntary actions like walking in a straight line, riding a bicycle, picking up a pencil, etc., are controlled by part of the hindbrain called [HSLC 2024]
(A) cerebellum
(B) cerebrum
(C) pons
(D) medulla
Answer: (A) cerebellum
Q12. Which of the following is a plant hormone? [HSLC 2025]
(a) Insulin
(b) Cytokinin
(c) Thyroxin
(d) Oestrogen
Answer: (b) Cytokinin
B. Extra Questions with Answers
Q.1 The specialised tips of some nerve cells that detect information from the environment are called —
(i) Effectors
(ii) Receptors
(iii) Synapses
(iv) Hormones
Answer: (ii) Receptors
Q.2 In a neuron, the electrical impulse travels from —
(i) Axon to dendrite
(ii) Cell body to dendrite
(iii) Dendrite to cell body to axon
(iv) Axon to cell body
Answer: (iii) Dendrite to cell body to axon
Q.3 The conversion of electrical impulse into a chemical signal occurs at the —
(i) Dendrite
(ii) Cell body
(iii) Axon terminal
(iv) Nucleus
Answer: (iii) Axon terminal
Q.4 Reflex arcs are formed in the —
(i) Brain
(ii) Spinal cord
(iii) Cerebellum
(iv) Fore-brain
Answer: (ii) Spinal cord
Q.5 Which part of the brain is responsible for precision of voluntary actions and maintaining posture and balance of the body?
(i) Cerebrum
(ii) Medulla
(iii) Cerebellum
(iv) Hypothalamus
Answer: (iii) Cerebellum
Q.6 When sugar is eaten while the nose is tightly closed, the taste sensation is reduced because —
(i) Gustatory receptors stop working
(ii) Olfactory receptors do not detect smell
(iii) Synapses are blocked
(iv) Saliva is not secreted
Answer: (ii) Olfactory receptors do not detect smell
Q.7 In an experiment where a potted plant is kept inside a box open on one side facing light, the shoot bends towards light due to —
(i) Equal distribution of auxin
(ii) Greater growth on the lighted side
(iii) Greater growth on the shaded side due to auxin
(iv) Inhibition of auxin on shaded side
Answer: (iii) Greater growth on the shaded side due to auxin
Q.8 Assertion (A): Electrical impulses are a fast means of communication in animals.
Reason (R): Electrical impulses can reach each and every cell of the body.
(i) Both A and R are true and R is correct explanation of A
(ii) Both A and R are true but R is not correct explanation of A
(iii) A is true but R is false
(iv) A is false but R is true
Answer: (iii) A is true but R is false
Q.9 Which of the following hormones inhibits plant growth and may cause wilting of leaves?
(i) Auxin
(ii) Gibberellin
(iii) Cytokinin
(iv) Abscisic acid
Answer: (iv) Abscisic acid
Q.10 Match the following and choose the correct option:
List I
A. Adrenaline
B. Thyroxin
C. Growth hormone
D. Insulin
List II
- Regulates blood sugar level
- Prepares body for fight or flight
- Regulates metabolism
- Controls growth and development
(i) A-2, B-3, C-4, D-1
(ii) A-3, B-2, C-1, D-4
(iii) A-2, B-4, C-3, D-1
(iv) A-1, B-3, C-2, D-4
Answer: (i) A-2, B-3, C-4, D-1
Q.11 The brain and spinal cord together constitute the —
(i) Peripheral nervous system
(ii) Central nervous system
(iii) Endocrine system
(iv) Reflex arc
Answer: (ii) Central nervous system
Q.12 The involuntary actions such as blood pressure, salivation and vomiting are controlled by the —
(i) Cerebrum
(ii) Cerebellum
(iii) Medulla
(iv) Spinal nerves
Answer: (iii) Medulla
Q.13 Which of the following statements about reflex action is correct?
(i) It is always controlled by the brain
(ii) It involves thinking before responding
(iii) It is a quick response formed in the spinal cord
(iv) It is a voluntary action
Answer: (iii) It is a quick response formed in the spinal cord
Q.14 In the reflex arc, the correct pathway of impulse is —
(i) Receptor → Motor neuron → Sensory neuron → Effector
(ii) Receptor → Sensory neuron → Relay neuron → Motor neuron → Effector
(iii) Motor neuron → Sensory neuron → Spinal cord → Effector
(iv) Receptor → Relay neuron → Sensory neuron → Motor neuron
Answer: (ii) Receptor → Sensory neuron → Relay neuron → Motor neuron → Effector
Q.15 The vertebral column protects the —
(i) Brain
(ii) Cerebellum
(iii) Spinal cord
(iv) Pituitary gland
Answer: (iii) Spinal cord
Q.16 The movement of leaves of the sensitive plant on touching is due to —
(i) Growth of cells
(ii) Unequal cell division
(iii) Change in amount of water in cells
(iv) Action of auxin
Answer: (iii) Change in amount of water in cells
Q.17 The upward growth of shoots and downward growth of roots in response to gravity is called —
(i) Phototropism
(ii) Geotropism
(iii) Hydrotropism
(iv) Chemotropism
Answer: (ii) Geotropism
Q.18 Assertion (A): Chemical communication in multicellular organisms can reach all cells of the body.
Reason (R): Hormones are released into the blood and carried to different parts of the body.
(i) Both A and R are true and R is correct explanation of A
(ii) Both A and R are true but R is not correct explanation of A
(iii) A is true but R is false
(iv) A is false but R is true
Answer: (i) Both A and R are true and R is correct explanation of A
Q.19 Which hormone is synthesised at the shoot tip and helps cells grow longer in response to light?
(i) Cytokinin
(ii) Gibberellin
(iii) Auxin
(iv) Abscisic acid
Answer: (iii) Auxin
Q.20 Match the following and choose the correct option:
List I
A. Cytokinin
B. Gibberellin
C. Abscisic acid
D. Auxin
List II
- Promotes cell division
- Inhibits growth
- Promotes stem growth
- Bending of shoot towards light
(i) A-1, B-3, C-2, D-4
(ii) A-2, B-1, C-3, D-4
(iii) A-3, B-4, C-1, D-2
(iv) A-1, B-2, C-4, D-3
Answer: (i) A-1, B-3, C-2, D-4
Q.21 The chemicals released at the end of the axon to transmit impulses across the synapse are —
(i) Hormones
(ii) Neurotransmitters
(iii) Enzymes
(iv) Antibodies
Answer: (ii) Neurotransmitters
Q.22 The peripheral nervous system consists of —
(i) Brain and spinal cord
(ii) Cranial nerves and spinal nerves
(iii) Fore-brain and hind-brain
(iv) Neurons and hormones
Answer: (ii) Cranial nerves and spinal nerves
Q.23 The part of the fore-brain responsible for interpreting sensory information is the —
(i) Motor area
(ii) Association area
(iii) Medulla
(iv) Cerebellum
Answer: (ii) Association area
Q.24 In animals, muscles contract because muscle cells —
(i) Increase their number
(ii) Change shape due to special proteins
(iii) Absorb more oxygen
(iv) Store more glucose
Answer: (ii) Change shape due to special proteins
Q.25 Which of the following is an example of chemotropism?
(i) Roots growing downwards
(ii) Shoots bending towards light
(iii) Growth of pollen tube towards ovule
(iv) Tendrils coiling around support
Answer: (iii) Growth of pollen tube towards ovule
Q.26 Assertion (A): Electrical impulses cannot be generated continuously in a neuron.
Reason (R): After transmitting an impulse, the neuron needs time to reset its mechanism.
(i) Both A and R are true and R is correct explanation of A
(ii) Both A and R are true but R is not correct explanation of A
(iii) A is true but R is false
(iv) A is false but R is true
Answer: (i) Both A and R are true and R is correct explanation of A
Q.27 When adrenaline is secreted into the blood, the heart —
(i) Stops beating
(ii) Beats slower
(iii) Beats faster
(iv) Beats irregularly
Answer: (iii) Beats faster
Q.28 Iodine is necessary for the synthesis of —
(i) Insulin
(ii) Thyroxin
(iii) Adrenaline
(iv) Growth hormone
Answer: (ii) Thyroxin
Q.29 Deficiency of growth hormone during childhood leads to —
(i) Gigantism
(ii) Goitre
(iii) Dwarfism
(iv) Diabetes
Answer: (iii) Dwarfism
Q.30 Match the following and choose the correct option:
List I
A. Thyroid gland
B. Pituitary gland
C. Pancreas
D. Adrenal gland
List II
- Produces insulin
- Produces thyroxin
- Produces adrenaline
- Secretes growth hormone
(i) A-2, B-4, C-1, D-3
(ii) A-1, B-2, C-3, D-4
(iii) A-3, B-1, C-4, D-2
(iv) A-2, B-1, C-3, D-4
Answer: (i) A-2, B-4, C-1, D-3
Q.31 The movement of a seedling towards light is an example of —
(i) Nastic movement
(ii) Phototropism
(iii) Geotropism
(iv) Chemotropism
Answer: (ii) Phototropism
Q.32 In hydrotropism, plant roots grow —
(i) Away from water
(ii) Towards water
(iii) Towards light
(iv) Away from gravity
Answer: (ii) Towards water
Q.33 The hormone that prepares the body for fight or flight situation is —
(i) Insulin
(ii) Thyroxin
(iii) Adrenaline
(iv) Oestrogen
Answer: (iii) Adrenaline
Q.34 During a frightening situation, blood supply to the digestive system —
(i) Increases
(ii) Stops completely
(iii) Decreases
(iv) Remains unchanged
Answer: (iii) Decreases
Q.35 Assertion (A): The cerebrum is the main thinking part of the brain.
Reason (R): It has areas specialised for hearing, smell, sight and voluntary actions.
(i) Both A and R are true and R is correct explanation of A
(ii) Both A and R are true but R is not correct explanation of A
(iii) A is true but R is false
(iv) A is false but R is true
Answer: (i) Both A and R are true and R is correct explanation of A
Q.36 Which structure protects the brain from mechanical shock?
(i) Vertebral column
(ii) Fluid-filled covering inside the skull
(iii) Rib cage
(iv) Pons
Answer: (ii) Fluid-filled covering inside the skull
Q.37 The hormone that promotes stem growth in plants is —
(i) Abscisic acid
(ii) Cytokinin
(iii) Gibberellin
(iv) Insulin
Answer: (iii) Gibberellin
Q.38 Which of the following is a voluntary action?
(i) Beating of heart
(ii) Secretion of saliva
(iii) Writing in a notebook
(iv) Vomiting
Answer: (iii) Writing in a notebook
Q.39 In diabetes, the level of sugar in blood rises due to insufficient secretion of —
(i) Thyroxin
(ii) Insulin
(iii) Adrenaline
(iv) Growth hormone
Answer: (ii) Insulin
Q.40 Match the following and choose the correct option:
List I
A. Medulla
B. Cerebellum
C. Cerebrum
D. Spinal cord
List II
- Reflex arc centre
- Controls voluntary actions
- Maintains posture and balance
- Controls involuntary actions like vomiting
(i) A-4, B-3, C-2, D-1
(ii) A-2, B-1, C-4, D-3
(iii) A-3, B-2, C-1, D-4
(iv) A-1, B-4, C-3, D-2
Answer: (i) A-4, B-3, C-2, D-1
Q.41 The regulation of hormone secretion by the effect of the hormone itself is called —
(i) Reflex action
(ii) Feedback mechanism
(iii) Tropism
(iv) Synaptic transmission
Answer: (ii) Feedback mechanism
Q.42 If blood sugar level rises, the pancreas responds by —
(i) Reducing insulin secretion
(ii) Increasing insulin secretion
(iii) Producing thyroxin
(iv) Stopping hormone secretion
Answer: (ii) Increasing insulin secretion
Q.43 The bending of a tendril around a support occurs because —
(i) Cells on the side in contact grow faster
(ii) Cells away from contact grow faster
(iii) Auxin is absent
(iv) Water content remains equal
Answer: (ii) Cells away from contact grow faster
Q.44 Which of the following movements in plants is independent of growth?
(i) Bending of shoot towards light
(ii) Growth of root downwards
(iii) Folding of leaves of sensitive plant
(iv) Growth of pollen tube
Answer: (iii) Folding of leaves of sensitive plant
Q.45 Assertion (A): Hormones in animals are transported through blood.
Reason (R): Hormones act only on the gland where they are produced.
(i) Both A and R are true and R is correct explanation of A
(ii) Both A and R are true but R is not correct explanation of A
(iii) A is true but R is false
(iv) A is false but R is true
Answer: (iii) A is true but R is false
Q.46 The breathing rate increases during a frightening situation due to the action of —
(i) Insulin
(ii) Thyroxin
(iii) Adrenaline
(iv) Cytokinin
Answer: (iii) Adrenaline
Q.47 The main coordinating centre of the body is the —
(i) Spinal cord
(ii) Cerebellum
(iii) Brain
(iv) Pituitary gland
Answer: (iii) Brain
Q.48 The movement of roots away from light is known as —
(i) Positive phototropism
(ii) Negative phototropism
(iii) Positive geotropism
(iv) Hydrotropism
Answer: (ii) Negative phototropism
Q.49 Which of the following is an example of involuntary action?
(i) Clapping at the end of a programme
(ii) Riding a bicycle
(iii) Secretion of saliva
(iv) Writing an answer
Answer: (iii) Secretion of saliva
Q.50 Match the following and choose the correct option:
List I
A. Auxin
B. Abscisic acid
C. Insulin
D. Adrenaline
List II
- Inhibits plant growth
- Regulates blood sugar
- Prepares body for emergency
- Helps in bending of shoot towards light
(i) A-4, B-1, C-2, D-3
(ii) A-1, B-4, C-3, D-2
(iii) A-2, B-3, C-1, D-4
(iv) A-3, B-2, C-4, D-1
Answer: (i) A-4, B-1, C-2, D-3
SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions for HSLC Exam 2026–27
The SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions provided here are prepared according to the latest SEBA (ASSEB) syllabus 2026–27. These SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions include conceptual MCQs, short answer questions, long answer questions, and diagram-based questions aligned with the HSLC exam pattern.
As per the latest HSLC structure, students must answer 45 MCQs. Therefore, regular practice of SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions ensures better preparation for MCQ-based and reasoning-type questions.
The SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions cover reflex arc, structure of brain, functions of hormones, endocrine system, and plant growth regulators. Continuous revision using SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions improves conceptual clarity and answer accuracy.
These Class 10 Control and Coordination Important Questions with MCQs are ideal for final revision. Consistent practice of SEBA Class 10 Science Chapter 7 Control and Coordination Important Extra Questions strengthens exam confidence and scoring performance.
Frequently Asked Questions (FAQ)
1. Why is Chapter 7 Control and Coordination important for HSLC exam?
This chapter explains nervous system, reflex action, endocrine glands, and plant hormones frequently asked in HSLC Science exams.
2. How many MCQs are asked in HSLC Science exam?
Students must answer 45 MCQs as per the latest HSLC Science examination pattern.
3. Are MCQs included in Control and Coordination important questions?
Yes, important conceptual and diagram-based MCQs are included according to the updated exam pattern.
4. Are these questions based on SEBA syllabus?
Yes, all questions are prepared strictly according to the latest SEBA (ASSEB) syllabus for 2026–27.
5. Do these include previous year questions?
Yes, previous year questions are included to help students understand HSLC exam trends.
6. Which topics are covered in Chapter 7?
Topics include reflex action, structure of brain, endocrine system, hormones, and plant growth regulators.
7. Can practising these improve exam performance?
Yes, regular revision improves conceptual clarity, diagram accuracy, and MCQ performance.
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