Biology
Answer
| Thigmotropism | Geotropism |
|---|---|
| Directional growth movement of a plant part in response to the touch of an object. | Directional growth movement of a plant part in response to gravity. |
| Example — Plants such as sweet peas, Cuscuta and vines have tendrils which coil around other plants in response to one sided contact or touch. | Example — Growth of roots of plants in downward direction. |
Related Questions
Define the following terms:
(a) Phytohormones
(b) Tropism
(c) Clinostat
(d) Apical dominance
(e) Parthenocarpy
(f) Abscission
(g) Heliotropism
List five plant growth hormones and mention one important role of each.
Differentiate between Positive and negative tropism
Differentiate between Stimulus and response