Figure (a) appears to be the most accurate because it accurately depicts both geotropism (roots growing down) and phototropism (shoots growing towards light) in a plant.
Explanation:
Geotropism:
In Figure (a), the roots are shown growing downwards, which is consistent with the principle of geotropism, where plants grow towards the gravitational pull.
Phototropism:
The shoots (or stems) in Figure (a) are depicted as bending towards the light source, which is consistent with phototropism, where plants grow towards light.
Accuracy:
This figure accurately illustrates the combined effect of gravity and light on plant growth, making it the most accurate depiction of these plant responses.
Why other options may be inaccurate:
If a figure shows the roots growing upwards or the shoots growing away from light, it would be inaccurate because it would not align with the established principles of plant growth and response to stimuli.