Control and coordination Worksheet-31
Subjective questions:
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Why are some patients of diabetes treated by giving injections of insulin?
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Design an experiment to demonstrate hydrotropism.
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What is the function of receptors in our body? Think of situations where receptors do not work properly. What problems are likely to arise?
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Draw the structure of a neuron and explain its function.
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How does phototropism occur in plants?
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Which signals will get disrupted in case of a spinal cord injury?
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How does chemical coordination occur in plants?
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What is the need for a system of control and coordination in an organism?
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How are involuntary actions and reflex actions different from each other?
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Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.
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What is the difference between the manner in which movement in the sensitive plant and movement in our legs takes place?
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What is a tropic movement? Explain with an example?
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What will happen if intake of iodine in our diet is low?
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What constitutes the central and peripheral nervous systems? How are the components of central nervous system protected?
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Mention one function for each of these hormones:
(a) Thyroxin (b) Insulin (c) Adrenaline (d) Growth hormone (e) Testosterone.
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Name various plant hormones. Also give their physiological effects on plant growth and development.
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How does chemical coordination take place in animals?
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Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse?
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Which part of the plant shows positive geotropism and why?
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Name the stress hormone in plants that functions during drought
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Name plant hormones which are growth promoters.
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Which plant hormone promotes ripening of fruits?
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Define growth regulators.
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Give reason, why endocrine glands release their secretions into the blood.
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Give reason, why movements in plants are not as apparent as in case of animals?
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Human brain can be broadly divided into three regions. Name them and give parts of any two of them.
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Differentiate between the following:
(a) Nervous information and hormonal information
(b) Tropic and nastic movements in plants.
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Differentiate between tropic and nastic movements.
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Draw a diagram of a neuron,
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Mention the functions of fore brain.