The tall plant cell in a leaf that is adapted to collect light efficiently is called a parenchyma cell, specifically a palisade parenchyma cell.

Here's why:

* Shape: Palisade parenchyma cells are elongated and cylindrical, standing upright like tiny columns. This shape maximizes their surface area exposed to sunlight.

* Location: They are located in the upper layer of the leaf, directly beneath the transparent epidermis, allowing them to receive the most direct sunlight.

* Chloroplasts: Palisade parenchyma cells contain a large number of chloroplasts, the organelles responsible for photosynthesis. These chloroplasts are packed with chlorophyll, the pigment that absorbs light energy.

All these features contribute to the palisade parenchyma cell's role as the primary light-absorbing and photosynthetic tissue in a leaf.