Co-ordination and Response

What response is shown in the diagram

• Positive phototropism

• Negative phototropism

• Positive geotropism

• Negative geotropism

Where on this diagram would auxin be made?

• The sun

• The stem tip

• Throughout the stem

• The darker side of the stem (B)

What effect does auxin have on the cells on the shady side of the stem?

• Celle bend

• Cells elongate

• Cells divide

• Cells shrink

What type of response is shown in these pictures?

• Negative geotropism

• Positive geotropism

• Negative phototropism

• Negative hydrotropism

What effect does auxin have on root cells?

• Inhibits growth

• Inhibits elongation

• Stimulates growth

• Causes cells to bend downwards

Which of these situations would result in a seedling stem growing straight upwards?

• Darkness

• Light directly over head

• Stem tip cut off

• Removing all its leaves

What is the gap between two neurones called?

• Cleft

• Junction

• Relay

• Synapse

• Myelin

Which phrase best describes the way a neurone sends information?

• Electric signal

• Impulse

• Electric impulse

• Electric message

• Nervous signal

What are the two possible types of 'effectors' in reflex arcs?

• Muscles

• Sensory Neurone

• Motor Neurone

• Glands

• Hormones

Which of these are characteristics of a reflex?

• Rapid

• Subconscious

• Protective

• Uses no synapses

• Requires the brain stem