Control and coordination Worksheet-2
Fill in blanks:
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The changes in the environment to which the organisms respond and react are called _____.
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The working together of the various organs of an organism in a systematic manner so as to produce a proper response to the stimulus is called_____.
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The plants coordinate their behavior against environmental changes by using _____.
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The function of control and coordination in plants is performed by the chemical substances called _____.
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The plant hormones are also called _____.
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Plant grows and reacts to external stimuli due to the actions of different chemicals named_____.
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_____ of plant is a directional movement.
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A growth movement of a plant part in response to an external stimulus in which the direction of stimulus determines the direction of response is called _____.
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If the growth (or movement) of a plant part is towards the stimulus, it is called _____tropism.
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If the growth (or movement) of a plant part is away from the stimulus, then it is called_____ tropism.
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The movement of a plant part in response to light is called _____.
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The movement of a plant part in response to gravity is called _____.
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The movement of a plant parting response to a chemical stimulus is called _____.
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The growth of pollen tube towards the ovule during the process of fertilization in a flower is an example of _____.
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The movement of a plant part in response to water is called _____.
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The directional growth movement of a plant part in response to the touch of an object is called _____.
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Tendrils of plants are positively _____.
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The movement of a plant part in response to an external stimulus in which the direction of response is not determined by the direction of stimulus is called _____ movement.
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Nastic movements of plants are also called _____.
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The folding up of the leaves of a sensitive plant (Mimosa pudica) on touching is an example of_____.
Answer:
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Stimuli
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Coordination
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Hormones
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Plant hormones
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Phytohormones
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Hormones
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Tropism
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Tropism
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Positive
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Negative
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Phototropism
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Geotropism
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Chemotropism
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Chemotropism
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Hydrotropism
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Thigmotropism
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Thigmotropic
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Nastic
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Nasties
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Nastic movement