Which of the following plant is found in the ground layer of a tropical rainforest in Nigeria?

Analyze the question: The question asks which plant lives in the ground layer (forest floor) of a tropical rainforest. This is about the vertical stratification of the rainforest.

Concept: Layers of the tropical rainforest

1. Emergent layer: the tallest trees, which stick out above the canopy, e.g. obeche (Triplochiton scleroxylon), iroko.
2. Upper canopy (main canopy): tall trees forming a continuous cover, e.g. mahogany, and also some obeche and iroko.
3. Understorey (lower tree layer): shorter trees and shrubs, e.g. oil palm, young trees.
4. Shrub/herb layer: small shrubs, ferns, and herbs.
5. Ground layer (forest floor): very little light reaches here, so the plants are small, shade-tolerant and moisture-loving. These include mosses, liverworts, fungi, ferns and seedlings.

Solution: Check each option

• A. Obeche: a very tall tree, in the emergent/upper canopy layer. ✗
• B. Liverwort: a small, non-vascular plant that thrives in damp, shaded places on the forest floor. ✓
• C. Mahogany: a tall canopy tree. ✗
• D. Oil palm: a medium-height tree, usually in the understorey or in the open. ✗

Answer: **B. Liverwort.

Tip: Think "size equals layer". Big trees (obeche, mahogany, iroko) belong to the top layers, while tiny, moisture-loving plants (mosses, liverworts, ferns) belong to the ground layer. If you see bryophytes in the options, they are almost always the forest floor answer.