Answer is B (in the prairies epiphytes are not present,only grasslands are present )

Answer:
The correct pair that is mismatched among the given options is B) Prairie-epiphytes.

Explanation:

Savannah-acacia trees:
- Savannah is a type of grassland ecosystem characterized by scattered trees.
- Acacia trees are commonly found in savannahs and are well-adapted to the dry and hot conditions of these regions.
- Acacia trees have long taproots that enable them to access deep groundwater, and they also have thorns to protect themselves from herbivores.

Tundra-permafrost:
- Tundra is a biome characterized by extremely cold temperatures, low precipitation, and a short growing season.
- Permafrost refers to the layer of permanently frozen soil found in the tundra.
- The frozen ground inhibits the growth of deep-rooted plants, and the shallow-rooted plants that do grow in the tundra have adaptations to survive in the cold conditions.

Coniferous-evergreen trees:
- Coniferous forests are characterized by trees that bear cones and have needle-like leaves.
- These trees are commonly referred to as evergreen trees because they retain their leaves throughout the year, even during the winter.
- The needle-shaped leaves help the coniferous trees reduce water loss and withstand harsh weather conditions, such as cold temperatures and strong winds.

Prairie-epiphytes:
- Prairies are grassland ecosystems that are characterized by tall grasses and few to no trees.
- Epiphytes, on the other hand, are plants that grow on other plants but do not derive nutrients from them.
- Epiphytes are commonly found in tropical rainforests, where they grow on the branches and trunks of trees.
- Prairie ecosystems lack the necessary tree structures for epiphytes to grow, making the pair mismatched.

In conclusion, the mismatched pair is B) Prairie-epiphytes because prairies do not have the appropriate tree structures for epiphytes to grow.