JAMB 2019 Biology · Question 3
Plants which can survive in extremely dry places are called
Options
- A.Mesophytes
- B.Xerophytes
- C.Hydrophytes
- D.Angiosperms
Answer: B. Xerophytes
Explanation written with AI and checked against the answer key
Step 1: Analyze the question The question asks for the name of plants that survive in extremely dry (arid) habitats.
Step 2: Explain the concept Plants are grouped by how much water their habitat provides:
- Xerophytes live in very dry places, such as deserts and semi-arid areas. "Xero" means dry.
- Mesophytes live where water is moderate. Most common crops and garden plants, such as maize, hibiscus and mango, are mesophytes.
- Hydrophytes live in water or very wet places, such as water lily and water lettuce. "Hydro" means water.
- Angiosperms are flowering plants. This is a taxonomic group, not a classification by habitat. It includes plants from all of the above groups.
Step 3: Solve Plants that survive in extremely dry places are xerophytes. They have adaptations that reduce water loss and store water:
- Thick, waxy cuticle
- Reduced leaves, or leaves turned into spines (e.g., cactus)
- Sunken stomata
- Fleshy stems or leaves that store water (succulence)
- Deep or widespread roots to reach water
Option A is for moderate conditions, option C is for water-loving plants, and option D is not a habitat-based term. So only B fits.
Exam tip: Remember the Greek roots: Xero = dry, Hydro = water, Meso = middle. Linking the prefix to the meaning will answer many questions of this type.
AI can make mistakes. Report anything that looks wrong.
Past questions © the examination body (JAMB/WAEC/NECO). DeeepSolve is not affiliated with them. Rights holders: see /copyright.
