CBSE Class 10 Science Control And Coordination

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Study Material for Class 10 Science Chapter 7 Control and Coordination

Class 10 Science students should refer to the following Pdf for Chapter 7 Control and Coordination in Class 10. These notes and test paper with questions and answers for Class 10 Science will be very useful for exams and help you to score good marks

Class 10 Science Chapter 7 Control and Coordination

CBSE Class 10 Science-Control And Coordination. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations.  Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects.

 CONTROL AND COORDINATION

Stimulus:-The change in the environment to which an organism respond and react is called stimulus. Control & co-ordination in animals takes place by :-a) Nervous system) Hormonal system (Endocrine glands)

Parts of Nervous system:-a) Brain b) Spinal cord c) Nerves

Neuron:-Is the structural and functional unit of Nervous system

Parts of Neuron:-a) Dendrites, b) cell body c) Axon

Synapse:-Junction between two adjacent nerves

Reflex action- spontaneous, involuntary and automatic response to a stimulus to protect us from harmful situations.

E.g. On touching a hot objects unknowingly we instantly withdraw our hand.

Nervous system-(1) Central Nervous System (CNS)

(2) Peripheral Nervous System (PNS)

(i) Autonomic Nervous System (ii) Voluntary Nervous System

Brain (i) Centre of coordination of all activities (ii) Thinking is involved (iii) Complex process

Parts of Brain- 

Fore brain Cerebrum - (i) Main thinking and largest part of the brain.

(ii) It has 3 main areasa.

a. Sensory area- to receive impulses from sense organs via Receptors

b. Motor area- control voluntary movements

c. Association areas- Reasoning, learning & intelligence.

Thalamus- It relays sensory information to the cerebrum.

Hypothalamus- It forms the link between Nervous system & Endocrine system

Mid brain- It connects fore brain and hind brain

Hind Brain- connects the fore brain and hind brain

Cerebellum- controls & coordinates muscular movements, maintaining body posture and equilibrium.

Pons- acts as a bridge between brain and spinal cord

Medulla Oblongata- Controls involuntary actions like blood pressure, salivation, vomiting etc.

Spinal cord: - cylindrical or tubular structure is extending downwards from the medulla oblongata.

Protection of the brain & the spinal cord-

(i) Bony outer covering: skull for the brain and vertebral column for the spinal cord.

(ii) Cerebrospinal fluid present in between the three membranes.

Hormones- (i) are chemical messenger secreted by endocrine glands

(ii) Are secreted in small amounts & may act in nearby places or distant places.

(iii) do not take part in the reaction & are destroyed immediately.

Important Endocrine glands, the hormone they secrete & their function

Coordination in plants- only chemical coordination is present in plants.

Tropic movements- the movements of plants in the direction of stimulus (positive) or away

from it (negative) are called tropic movements. E.g. Phototropism, Geotropism, Chemotropism.

Plant hormones (Phytohormones) 

cbse-class-10-science-8

CBSE Class 10 Science-Control And Coordination

CBSE Class 10 Science-Control And Coordination

CBSE Class 10 Science-Control And Coordination

CBSE Class 10 Science-Control And Coordination

1. Name the hormone which helps in regulating sugar level in our blood? Name the gland which secretes this hormone?

2. State the main function of abscisic acid

3. Write name of three hormones secreted by the pituitary gland

4. Mention one example of chemotropism.

SHORT ANSWER TYPE QUESTIONS

1. Name the following:

a)Necessary for thyroid glands

b) Necessary to maintain sugar level of the body

2) Draw the diagram of a nerve cell and label the following on it:(a) Nucleus (b) Dendrites

3) How does our body maintain blood sugar level?

SHORT ANSWER QUESTIONS 

1. A compound of iodine is compulsorily added to common salt in small quantity.

(a) Why is it important for us to have iodised salt in our diet.

(b) Name the disease caused by its deficiency.

(c) Write the symptoms of the disease.

2. What is reflex action? Describe the steps involved in reflex action.

3) Name the following: Response of plants to light, chemical and water.

VALUE BASED QUESTION

Ritesh is fond of eating pickles. As he hears the name of pickles, watering starts in his mouth. His friends used to make fun of him. When the same process or event was executed to the dog of Ristesh, the result was different. Now answer the following questions:

(i) What is the biological term for the watering of Ritesh in his mouth?

(ii)Why did the dog of Ritesh not water from mouth in the same events?

(iii)What is the value shown by his friends?

LONG ANSWER QUESTIONS 

1. Name the plant growth hormone which is synthesized at the shoot tip. Explainbriefly why a plant bends towards light during its growth.

2. Draw the diagram of human brain and label the parts. Write the function of cerebellum and pons 3. What is reflex action? Describe the steps involved in reflex action.

4) Name the following: Response of plants to light, chemical and water.

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CBSE Class 10 Science Chapter 7 Control and Coordination Study Material

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Chapter 7 Control and Coordination Study Material Science CBSE Class 10

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Chapter 7 Control and Coordination CBSE Class 10 Study Material Science

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