Tropisms

Front

What is phototropism?

Back

Phototropism is the response of a plant to light, causing it to grow towards the light source.

Front

What causes phototropism in plants?

Back

Phototropism is caused by auxins, which are hormones that promote cell elongation on the side of the plant that is away from the light.

Front

What is geotropism?

Back

Geotropism is a plant's response to gravitational force, where roots grow downwards and stems grow upwards.

Front

What is thigmotropism?

Back

Thigmotropism is a plant's response to physical touch, allowing it to wrap around or cling to objects.

Front

What is hydrotropism?

Back

Hydrotropism is a plant's growth response to moisture, where roots grow towards areas of higher water concentration.

Front

What is the role of auxins in tropisms?

Back

Auxins are plant hormones that regulate growth by promoting cell elongation, influencing how plants respond to stimuli.

Front

How does phototropism benefit plants?

Back

Phototropism allows plants to maximize light exposure for photosynthesis, enhancing their growth and survival.

Front

What is the difference between positive and negative tropism?

Back

Positive tropism is growth towards a stimulus (e.g., phototropism), while negative tropism is growth away from a stimulus (e.g., negative geotropism).

Front

Give an example of a plant exhibiting thigmotropism.

Back

Climbing plants like vines exhibit thigmotropism by wrapping around supports as they grow.

Front

What is the significance of geotropism in plants?

Back

Geotropism ensures that roots grow downwards into the soil for stability and water/nutrient absorption, while stems grow upwards for light.