Control and Coordination
CBSE Class 10 Science · 82 board questions from this chapter; 81 listed below, 2023–2026
- Identify the endocrine gland that regulates the growth of human body.2026
- Identify the type of tropic movement that is responsible for the movement of the pollen tube towards an ovule from the following…2026
- Walking in a straight line and riding a bicycle are activities which are possible due to coordination of which part of the brain?…2026
- Human brain has various parts or regions that help in different actions, responses and coordination. From the following, identify…2026
- In a synapse, the chemical signal is transmitted from:2026
- Translocation is the process in which plants deliver:2026
- The growth of tendrils in grapes plants is due to:2026
- Assertion: Reflex actions do not involve thinking. Reason (R): Most reflex actions are controlled by the spinal cord.2026
- Assertion: In case of iodine deficiency in our diet, there is a possibility that we might suffer from goitre. Reason (R): One of…2026
- Assertion: Plants have hormones that do not control directional growth. Reason (R): Abscisic acid inhibits growth.2026
- "The timing and the amount of hormone secreted by a gland are regulated in the human body." Justify this statement with the help…2026
- What are hormones? State any one function of the following hormones: (i) Insulin (ii) Adrenaline2026
- Observe the given figure and identify the labelled parts P, Q, R and S: OR Which of the plant hormones are responsible for the…2026
- Give reasons for the following: Adrenal gland is known as the stress gland of the body. Prenatal sex determination is banned in…2026
- Mention the gland and the hormone secreted by it in scary situation in human beings. Write two responses that enable the human…2026
- Read the following passage and answer the questions that follow: A middle-aged person is facing some cognitive changes in…2026
- Plants exhibit movements in response to various environmental stimuli to adopt and survive in their surroundings. These…2026
- The part of the brain which maintains the posture and balance of the body is:2025
- The part of the hind-brain controlling involuntary actions such as salivation and vomiting in humans is:2025
- The growth of the pollen tubes towards ovules is an example of:2025
- The plant hormone present in greater concentration in the areas of rapidly dividing cells is:2025
- Electrical impulse travels in a neuron from2025
- Observe the given figures A and B. When chhui-mui (sensitive) plant is touched, its leaves fold. This is due to: Figure A Figure B2025
- The plant hormone whose concentration stimulates the cells to grow longer on the side of the shoot which is away from light is:2025
- Which among the following is not a neural action controlled by the part of human brain labelled 'X' in the figure above?2025
- A pair of endocrine glands located in the human brain is2025
- The plant hormones promoting rapid cell division in seeds and wilting of leaves respectively are2025
- Assertion: In our actions of writing or talking, our nervous system communicates with the muscles. Reason (R): Cranial nerves and…2025
- How is brain protected in our body? A doctor finds in one of his patients that he is not maintaining a proper posture and balance…2025
- Name the parts of hind-brain of the human brain. Which part of the hind-brain controls involuntary actions such as blood pressure…2025
- A person is making a list to purchase few things from a nearby market. Explain how the fore-brain plays an important role in…2025
- Study the given diagram and write the type of movement exhibited by: Root, and Shoot, mentioning the stimulus in each case.2025
- What is meant by reflex arc? Where are they formed in the human body? Why have reflex arcs evolved in animals?2025
- Define hormone. "Hormones should be secreted in precise quantities. We have a feedback mechanism through which this is done."…2025
- State two limitations of electrical impulses in multicellular organisms. Why is chemical communication better than electrical…2025
- A hormone 'X' is secreted in blood when a person is under scary situation. Identify the hormone 'X' and the gland that secretes…2025
- Name the glands that secrete: (i) Adrenaline (ii) Thyroxin Explain with example how the timing and amount of hormone released are…2025
- Analyse the given situations and interpret the possible reason for each: (i) Iodine deficiency in diet increases the possibility…2025
- A person while climbing up a rocky hill comes into a panic state and fear. His body starts reacting in a "flight-or-flight"…2025
- The growth movements of plant parts in which the direction of the stimulus determines the direction of the response is known as…2025
- In life there are certain changes in the environment called 'stimuli' to which we respond appropriately. Touching a flame…2025
- Identify an involuntary action from the following:2024
- A plant growth inhibitor hormone which causes wilting of leaves is called:2024
- The correct sequence of events when someone's hand touches a hot object unconsciously:2024
- Sense organ in which olfactory receptors are present is:2024
- Select from the following a plant hormone which promotes cell division.2024
- Select out of the following a gland which does NOT occur as a pair in the human body:2024
- In a nerve cell, the site where the electrical impulse is converted into a chemical signal is known as:2024
- Select from the following a plant hormone which promotes cell division.2024
- Assertion: Receptors are usually located in our sense organs and perceive a particular stimulus. Reason (R): Different sense…2024
- (i) Write the significance of peripheral nervous system in human beings. (ii) How is human brain protected from mechanical…2024
- Where are auxins synthesized? How do they promote phototropism?2024
- How is the movement of leaves of a sensitive plant different from the downward movement of the roots? OR There is a hormone which…2024
- In which region of the brain is (i) medulla and (ii) cerebrum located? State one function of each. OR Name a hormone that…2024
- Taking the example of any two animal hormones along with their gland of secretion, explain how these hormones help (i) in growth…2024
- Name a plant growth hormone synthesized at the shoot tip. Explain its effect on the growth of a plant in response to light.2024
- Write the name and location of a hormone which helps a person to respond when chased by a dog. Mention the responses in the body…2024
- Define reflex action. With the help of a flow chart show the path of a reflex action such as sneezing.2024
- List two constituents of Central Nervous System (CNS). How are these components protected from injuries? Write two limitations of…2024
- (i) Define a reflex arc. Why have reflex arcs evolved in animals? Trace the sequence of events which occur, when you suddenly…2024
- (i) Distinguish between hormonal co-ordination in plants and animals. (ii) Which part of the brain is responsible for - (1)…2024
- Select a pair of olfactory indicators from the following:2023
- Walking in a straight line and riding a bicycle are the activities which are possible due to a part of the brain. Choose the…2023
- Select from the following the correct statement about tropic movement in plants:2023
- Sensory nerve of a reflex arc carries information from the receptor cells to the:2023
- The part in which gustatory receptors are present in our body is:2023
- Name a plant hormone responsible for bending of a shoot of a plant when it is exposed to unidirectional light. How does it…2023
- A plant hormone helps in bending of stem towards light. Name the hormone and explain how is the movement achieved.2023
- How is the brain and spinal cord protected in human beings? State one main function each of (i) Medulla and (ii) Cerebellum.2023
- How is an electric impulse created in human nervous system? Identify the parts of a neuron which helps the nerve impulse to…2023
- List two differences between the movement of leaves of a sensitive plant and the movement of a shoot towards light. OR What…2023
- Write the role of insulin in regulating blood sugar levels in human body. Mention the disease caused due to it. How is the timing…2023
- Name the part of brain which is responsible for the following actions: (i) Maintaining posture and balance (ii) Beating of heart…2023
- Write the name and function of parts (i) and (ii) in the diagram of a neuron given below.2023
- Name the hormone secreted in scary situations by animals. Write any three responses which enable the animal body to deal with it.2023
- Write the sequence of events that involve response of a person when a dust particle is inhaled through the nose by him.2023
- Some plants like pea plants have tendrils which help them to climb up other plants. Explain how is it done. Name the plant…2023
- Name the gland and the hormone secreted by it in scary situations in human beings. List any two responses shown by our body when…2023
- Explain the directional movement due to growth in response to touch in a pea plant.2023
- Name the hormone released and the gland which secretes it in human beings during scary situations. How does the body respond to…2023
- (i) List three points of difference between nervous and hormonal mechanisms for control and coordination in animals. (ii) How are…2023
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