Botany is also known as

Analyze the question: The question asks for another name for Botany, which is the scientific study of plants.

Explain the concept: Many branches of biology take their names from Greek or Latin roots. Look at the root of each option:

• Phyto- comes from the Greek phyton, meaning "plant". Phytology is an older synonym for Botany, the study of plants.
• Phyco- comes from the Greek phykos, meaning "seaweed" or "algae". Phycology is the study of algae only, which is one branch of Botany, not the whole of it.
• Pedo- comes from the Greek pedon, meaning "soil". Pedology is the study of soils.
• Plantophyta is not a recognised biological term.

Step-by-step solution:

1. Botany means the study of plants.
2. The root meaning "plant" is phyto-, so the matching term is Phytology.
3. Phycology (algae) is too narrow, Pedology (soil) is unrelated, and Plantophyta does not exist.
4. Phytology is therefore the answer.

Answer: The correct option is A. Phytology.

Tip: Remember the roots: Phyto = plant, Phyco = algae, Pedo = soil. Compare also Zoology (animals), Mycology (fungi) and Entomology (insects). Do not mix up Phytology with Phycology, because JAMB often places them side by side as distractors.