This is called tropism. From the Greek word trope, meaning to turn, or change.
It is called cowlick. Horse Isle Quiz: Cowlick
Phototropism
Sonotropism, movement or growth in response to sound.
Gravitropism (also known as geotropism) is a turning or growth movement by a plant or fungus in response to gravity. It is a general feature of all higher and many lower plants as well as other organisms. Wikipedia
Growth of plants toward the light is called phototropism. Growth of plants in response to gravity is called geotropism or gravitropism.
A change in plant growth due to gravity is gravitropism. Roots have a tendency to grow in the direction of strongest gravitational pull.
Directional growth in which the direction of growth is determined by the direction of the light source. In other words, it is the growth and response to a light stimuli.
thigmotropism
thigmotropism
Plant growth in response to touch is called thigmotropism.
thigmotropism
A tropism is a growth response whose direction is determined by the direction of the stimulus. Growth towards the stimulus is called a positive tropism. Growth away from the stimulus is called a negative tropism. The response to light is called phototropism. Shoots are positively phototropic, roots are negatively phototropic. The response to gravity is called gravitropism (or sometimes geotropism). Shoots are negatively gravitropic and roots are positively gravitropic. http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/T/Tropisms.html
It is called cowlick. Horse Isle Quiz: Cowlick
The responses of plants to external stimuli is called Tropism.Here are some tropisms:* Chemotropism, movement or growth in response to chemicals * Geotropism (or gravitropism), movement or growth in response to gravity * Heliotropism, movement or growth in response to sunlight * Hydrotropism, movement or growth in response to water * Phototropism, movement or growth in response to lights or colors of light * Thermotropism, movement or growth in response to temperature.
water
A root's downward growth as a response to gravity is called positive gravitropism or positive geotropism.
Thermal growth is more commonly known as thermal expansion. It is the tendency of matter to change in volume in response to a change in temperature.