Page 105 - PRACTICE EXAMS FOR YDT

YDT/İNG

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A) Root grafts can live for many years, even after
Trees communicate with each other in a number the death of the trees.
of ways, allowing them to share information,
resources, and even warning signals. One of the B) The graft union can accelerate the spread of
most well-known forms of tree communication pests and diseases among trees.
is through underground networks of fungi called
mycorrhizae. These networks enable trees to share C) Trees can exchange chemical signals with one
nutrients and information with one another, even another thanks to root grafts.
across different species. Studies have shown that
trees can use these networks to send warnings D) Root grafts are more common in densely
to each other about predators, such as insect forested areas where trees have similar root
infestations. Furthermore, when they are under systems.
attack by pests or disease, trees can transmit E) The roots of some trees can transfer nutrients
chemical signals into the air that alert nearby trees and water directly.
to begin producing defence chemicals. Some trees
can also form physical connections between their
roots, known as ‘root grafts.’ These connections
allow trees to share nutrients and water directly,
which can be especially helpful during times of
drought when water resources are scarce. Thanks
to these communication and interaction systems, 4
trees can support and look out for each other, A) To inform the readers about how trees interact
and this creates a complex and interconnected with one another
community in the forest.
B) To demonstrate the ability of trees to develop
connections between their roots

C) To emphasise the benefits of building an
underground network
4 ----
D) To stress that trees need to share nutrients in
A) some insects cause significant damage to
trees, leading to tree death times of drought
B) trees of various kinds can exchange E) To explain how trees protect themselves from
information and nutrients using fungi networks predators and diseases

C) trees in a forest compete for limited resources
such as water, nutrients, and sunlight

D) when trees are threatened, mycorrhizae allow
them to produce defence chemicals
E) mycorrhizae can boost the immune systems of
trees and make them more disease resistant

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