Visual guide explaining plant tropisms, focusing on phototropism where plant shoots grow toward light.

Explanation:
We are asked: *What plant tropism is being displayed positively by the shoots?*

Let’s break it down:

- A tropism is a directional growth response to a stimulus.
- “Positive” means the plant grows toward the stimulus.
- The question asks about shoots (the above-ground parts, like stems and leaves).

Now look at the examples shown:
- In phototropism, shoots bend toward light — that’s positive phototropism.
- In hydrotropism, roots grow toward water (shoots usually don’t show strong hydrotropism).
- In gravitropism, shoots grow against gravity (upward), which is *negative* gravitropism (since gravity pulls down, growing up is away from the stimulus).
- In thigmotropism, plants respond to touch (e.g., vines coiling around a pole) — not clearly shown as positive in shoots here.

The diagram highlights phototropism with three sketches where the shoot bends toward the light source. Also, the label “Phototropism” is boxed and emphasized.

So, the shoot is showing positive phototropism — growing toward light.

Final Answer:
Phototropism