The common name for Pennisetum purpureumis _ grass

Pennisetum purpureum is commonly known as elephant grass (also called Napier grass). It is a tall, robust tropical grass that can grow up to 3-4 metres in height, hence the name "elephant" - reflecting its large size. It is widely cultivated in West Africa and other tropical regions as a fodder crop for livestock due to its high biomass yield.

The other options refer to different grass species:

• Bahama grass is the common name for Cynodon dactylon, a low-growing, creeping grass used for lawns and pastures.
• Guinea grass is Megathyrsus maximus (formerly Panicum maximum), another important tropical pasture grass but a different species.
• Carpet grass is Axonopus compressus, a low-growing grass used for ground cover in moist tropical areas.

Exam tip: Learn the botanical and common names of the most important tropical forage grasses - elephant grass (Pennisetum purpureum), guinea grass (Panicum maximum), bahama grass (Cynodon dactylon), and carpet grass (Axonopus compressus). These appear frequently in JAMB questions.