The movement response of a cockroach away from a light source is

Step 1: Analyze the question The question asks for the name of the response of a cockroach (an animal that can move) when it moves away from light.

Step 2: Explain the concepts

• Taxis (taxism): a movement of a whole organism, usually an animal, in response to a directional stimulus. • Positive taxis means movement toward the stimulus. • Negative taxis means movement away from the stimulus.
• Tropism: a growth response, usually in plants, where a part of the organism bends toward or away from a stimulus. The organism does not move from place to place.

Step 3: Apply to the question

• A cockroach is an animal and moves its whole body, so the response is a taxis, not a tropism. This rules out C and D.
• It moves away from light, so the response is negative. This rules out B.
• The correct term is therefore negative phototaxis (the question spells it "phototaxism").

Step 4: Answer The correct option is A. negative phototaxism.

Tip: Remember it this way:

• Taxis = Travel (the whole animal moves).
• Tropism = Turn/bend (a plant part grows toward or away from the stimulus).
• Positive = Toward, Negative = Away.

Cockroaches are nocturnal and hide from light in dark cracks, so they show negative phototaxis. Look out for this in WASSCE and NECO too.