Question

In figures (a), (b), and (c), which appears more accurate and why?

Answer 1

Plant growth:

1. Figure (a) is more accurate as it depicts the plant roots exhibiting positive geotropism and the shoots show positive phototropism.
2. Tropism is the growth of the plant towards or away from a stimulus. They help the plant adapt to changing environmental conditions.
3. Geotropism is the growth of plant parts in response to the direction of gravitational pull.
4. The movement of plant parts towards the gravitational pull is referred to as positive geotropism and the growth of roots is an example of positive geotropism.
5. Phototropism is the ability of plants to grow in response to light.
6. The plants undergo differential cell elongation in response to directional blue light. This enables the plant to utilize photosynthetic light on the aerial parts to conduct photosynthesis.
7. The plant stem grows towards light and exhibits positive phototropism.