Response - Response to Stimuli: Key Terms Flashcards

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1
Q

Taxis

A

A simple response whose direction is determined by the direction of the stimulus

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2
Q

Kinesis

A

A non-directional response to a stimulus which brings about increased random movements

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3
Q

Tropism

A

A growth movement of a part of a plant in response to a directional stimulus

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4
Q

Indoleacetic acid (IAA)

A

An auxin (a plant growth factor) which is produced in small quantities and controls plant cell elongation

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5
Q

Plant growth factors

A

Hormone-like substances which control plant responses to external stimuli

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6
Q

Photo

A

A prefix meaning light

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7
Q

Geo

A

A prefix meaning gravity

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8
Q

Hydro

A

A prefix meaning water

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9
Q

Chemo

A

A prefix meaning chemical

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10
Q

Rheo

A

A prefix meaning movement

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11
Q

Central nervous system

A

The brain and spinal cord

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12
Q

Peripheral nervous system

A

Pairs of nerves that originate from either the brain or spinal cord to the rest of the body

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13
Q

Neurone

A

Specialised cells adapted to rapidly carrying electrochemical changes called nerve impulses from one part of the body to another

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14
Q

Sensory neurones

A

Neurones which carry nerve impulses from receptors towards the CNS (an intermediate or motor neurone)

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15
Q

Motor neurones

A

Neurones which carry nerve impulses away from CNS (an intermediate or relay neurone) to an effector

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16
Q

Intermediate / relay neurones

A

A neurone which is a co-ordinator which transmit impulses between neurons