The movement of Euglena towards the source of light is a?

A. tropic movement
B. tactic movement
C. nastic movement
D. kinetic movement

Correct Answer:

Option B – tactic movement

Explanation

Taxis (tactic movement) A change in direction of locomotion in a motile micro-organism or cell, made in response to certain types of external stimulus

Tactic movement is a type of movement in plants which is directed towards (positive) or away from (negative) a stimulus. For example, phototaxis is a plant’s response to light. Positive phototaxis occurs when a plant moves or orients itself towards a light source.