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What is the need for a system of control...

What is the need for a system of control and coordination in an organism?

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Controlled movement must be connected to the recognition of various event: followed by only the correct movement in response In other words, living organisms must use systems providing control and coordination, In keeping with the general principles of body organisation in Multicelluiar organisms, specialised tissues are used to provide these control and coordination activities
(i) Coordination is needed for all human activities like, thinking and behaviour process, hearts beats. we dance, read. write by the action of our nervous system. Our nervous system gets information from surroundings and processes it and then respond according to it The endocrine system (hormonal system) helps in integrating various metabolic activities like reproduction, development, all reflex actions (cope up with various give up situations) Our breathing
(ii)The hormonal system in plants helps in process of photosynthesis they need carbon dioxide roots bend towards water and the stem grows towards suniight, the tendrils supported by the hormonal system of the plant body climbing pants are an organisms. Thus. we have need of control and coordination system in an organism
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Neural control and coordination (level 3 and 4)

Neural control and coordination Assertion Reason Type

Nervous and hormonal systems together perform the function of control and coordination in human beings.' Justify the statement.

(a) Name two systems which taken together perform the functions of control and coordination in human beings. (b) What does the central nervous system in humans consist of? What is the job of the central nervous system? (c) Give the various functions of brain.

A and B are the two systems of control and coordination in the human body. The messages in system A are trasmitted in the form of chemical substances C which travel comparatively slowly through the blood stream. The substances C are made in tissues D present in the head and trunk of human body. The messages in system B are transmitted by system B usually lasts for a much shorter time as compared to those transmitted by system A. (a) Name the system A. What does system A consist of? (b) Name the chemical substance C. (c) What is tissue D? Name any five such tissues in the human body. (d) Name the system B. What does system B consist of? (E) Name the fibres E. (f) State whether system A controls the working of system B or system B controls the working of system A.

What is the general name of chemical substances which bring about control and coordination in plants?

NCERT- CONTROL AND COORDINATION-Exercise
  1. How is the movement of leaves of the sensitive plant different from th...

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  2. Give an example of a plant hormone that promotes growth.

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  3. How do auxins promote the growth of a tendril around a support?

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  4. Design an experiment to demonstrate hydrotropism.

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  5. How does chemical coordination take place in animals?

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  6. Why is the use of iodised salt advisable

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  7. How does our body respond when adrenaline is secreted into the blood?

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  8. Why are some patients of diabetes treated by giving injections of insu...

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  9. Which of the following is a plant hormone?

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  10. The gap between two neurons is called a

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  11. The brain is responsible for

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  12. What is the function of receptors in our body? Think of situations whe...

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  13. Draw the structure of a neuron and explain its function.

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  14. How does phototropism occur in plants?

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  15. Which signals will get disrupted in case of a spinal cord injury?

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  16. How does chemical coordination occur in plants?

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  17. What is the need for a system of control and coordination in an organi...

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  18. How are involuntary actions and reflex actions different from each oth...

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  19. Compare and contrast nervous and hormonal mechanisms for control and c...

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  20. What is the difference between the manner in which movement takes plac...

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