In temperate forests, trees are connected underground by a vast network of fungal threads known as mycorrhizae. Through these fungal highways, trees can share vital nutrients such as carbon, nitrogen, and water. Older, more established trees—often called 'mother trees'—use this network to assist younger, shaded saplings that struggle to receive adequate sunlight for photosynthesis. Additionally, trees can transmit chemical warning signals through the network when threatened by pests, allowing neighboring trees to prepare their chemical defenses. Thus, the mycorrhizal network serves as a collaborative system that supports the health and survival of the entire forest community.
Which choice best states the main purpose of the text?
- To explain how mycorrhizal networks facilitate resource sharing and communication among trees.Cevap
- BTo argue that younger saplings cannot survive without the help of older mother trees.
- CTo describe the global impact of fungal species on temperate forest climates.
- DTo explain the specific chemical defenses trees use to deter insect pests.
Cevap
The primary purpose of the text is to explain how mycorrhizal networks facilitate resource sharing and communication among trees.
The correct answer accurately states the main purpose of the text. The passage describes how the mycorrhizal network connects trees to share nutrients and transmit warning signals. The option stating that mycorrhizal networks facilitate resource sharing and communication best captures this overall objective.
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Anahtar Kavram
Identifying the primary purpose of the whole text involves summarizing the author's main objective rather than focusing on secondary details or making overly broad generalizations.