The fascinating world of attine ants - IELTS Reading with Practice Test, Answers And Explanation
Luyện tập đề IELTS Reading Practice với passage The fascinating world of attine ants được lấy từ cuốn sách Forecast Test 2026 - Q1 - Test 2 - Passage 1 với trải nghiệm thi IELTS trên máy và giải thích đáp án chi tiết bằng Linearthinking, kèm list từ vựng IELTS cần học trong bài đọc.
The fascinating world of attine ants - IELTS Reading with Practice Test, Answers And Explanation
❓ Câu hỏi (questions)
Question 1 - 6
Reading Passage has eight paragraphs A-H
Which paragraph contains the following information?
Write the correct letter, A-H
1
Two things at which leaf-cutter ants have succeeded but humans have failed.
2
A comparison between the nests of leaf-cutter and lower attine ants.
3
A reference to how much earlier ants began farming than people.
4
The effect Escovopsis has on ant communities.
5
The advantage for lower attine ants of growing a range of funguses.
6
The discovery of the age of the attine ant funguses.
Question 7 - 11
Look at the following features and the list of ants below.
Match each feature with the correct type of ants, A-C.
Write the correct letter, A-C.
List of Findings
A
leaf-cutter ants
B
lower attine ants
C
both leaf-cutter and lower attine ants
7
The use of dead vegetation to cultivate their fungus
8
Very small ants that keep the fungus free of foreign organisms
9
The ability to safely eat harmful plants
10
The cultivation of a single fungus
11
A nest with a very large number of rooms for growing fungus
Question 12 - 13
Choose the correct letter, A, B, C or D.
Write the correct letter in boxes on your answer sheet.
12
What does the writer say about Cameron Currie’s research?
A
No previous work had been done in this area.
B
Earlier studies did not support his theory.
C
Textbooks on this subject lacked specific detail.
D
Currie’s initial theory had proven to be incorrect.
13
Using a microscope, Currie was the first to discover that the body of attine ants....
A
has a white covering.
B
is covered in wax.
C
is poisonous to humans.
D
has a substance useful to humans.
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📖 Bài đọc (reading passage)
The fascinating world of attine ants
Nicholas Wade examines leaf-cutter ants and their amazing agriculture.
A
A. Leaf-cutting ants and their fungus (fungus an organism such as a mushroom which obtains its food from decaying material) ‘farm’ are a marvel of nature and perhaps the best-known example of symbiosis - the mutual dependence of two species. The ants cultivate a mushroom – like fungus in ‘farms’. Both the ants and their so-called ‘agriculture have been extensively studied over the years, but recent research has uncovered intriguing new findings. Ants invented agriculture 50 million years before people did, and leaf-cutters, members of the large attine ant family, practice the most sophisticated example of it. They grow their fungus in underground chambers that can reach the size of a football. A single leaf-cutter nest may contain a thousand such chambers, embedded in an underground metropolis up to 18 feet deep, and support a society of more than a million ants.
B
These ant communities are the dominant plant-eaters of the Neotropics, the region comprising South and Central America, Mexico and the Caribbean. Biologists believe 15 percent of the leaf production of tropical forests disappears down the nests of leaf-cutter ants. In the nest, the leaves are shredded and added to the fungus, which digests the leaves and is in turn eaten by the ants. The attine ants' achievement is remarkable because it allows them to consume, courtesy of their mushroom’s digestive powers, the harvest of tropical forests whose leaves are laden with poisonous chemicals.
C
There are more than 200 known species of the attine ant tribe, divided into 12 groups, or genera. The leaf-cutters use fresh vegetation; the other groups, known as the lower attines because their nests are smaller and their techniques more primitive, feed their gardens with similar leaves which have fallen on the ground and insects that lie on the forest floor. Lower attine ants are all a similar size. However, leaf-cutter worker ants come in made-to-fit sizes – large ants to saw off leaves, medium ones to shred them, and miniature workers to seed them with fungus and clean off alien growths.
D
In 1994, biologists from the United States Department of Agriculture analyzed the DNA of ant funguses. They found the leaf-cutters' fungus was descended from a single pure strain, propagated for at least 23 million years. However, the funguses grown by lower attine ants fell into four different groups, as if the ants had domesticated wild funguses at least four times in evolutionary history. What could be driving these two patterns of fungus gardening, the pure clone cultivation of the leaf-cutters and multiple varieties of the lower attines?
E
The answer has been suggested by Cameron Currie of University of Toronto, it. The pure strain of fungus grown by the leaf-cutters, it seemed to him, resembled the single crops grown by humans to the exclusion of all others, such as potato growing. These ‘monocultures’, which lack the genetic diversity to respond to changing environmental threats, are particularly vulnerable to parasites – organisms which live and feed on their host, often causing harm. Currie felt there had to be a parasite in the ant-fungus system. But a century of ant research did not provide any evidence for his idea. Textbooks describe how leaf-cutter ants scrupulously weed their gardens of all foreign organisms. "People kept telling me, the ants keep their gardens free of parasites," said Currie. Nevertheless, after three years of sifting through attine ant gardens, Currie discovered several alien organisms, particularly a family of parasitic molds called ‘Escovopsis’.
F
Escovopsis is a deadly disease that can devastate a fungus garden in a couple of days. It blooms like a white cloud which envelops the whole garden. Other ants won’t go near it and the ants associated with the garden just starve to death. Evidently, the ants usually manage to keep Escovopsis and other parasites under control. Nevertheless, with any lapse in control Escovopsis will quickly burst forth. Although new leaf-cutter gardens start off free of Escovopsis, within two years some 60 percent become infected.
G
The discovery of Escovopsis’s role brings a new level of understanding to the evolution of the attine ants. In the last decade, evolutionary biologists have been increasingly aware of the role of parasites as driving forces in evolution. With Currie’s work, there is now a possible reason for the different varieties of fungus in the lower attine mushroom gardens- to stay one step ahead of the relentless Escovopsis. Interestingly, the leaf-cutters had in general fewer alien molds in their gardens than the lower attines, yet more Escovopsis infections. Clearly, the price they pay for cultivating a pure variety of fungus is a higher risk from Escovopsis.
H
So how do attine ants keep this parasite under control? People have known for a hundred years that ants have a whitish growth on their body surface. It was thought to be wax but, after examining it under a microscope, Currie discovered a specialized patch on the ants' bodies that harbors a particular kind of bacterium, one well known to the pharmaceutical industry and the source of half the antibiotics used in medicine. This bacterium is a potent poisoner of Escovopsis inhibiting its growth and suppressing spore formation. Astoundingly, the leaf-cutter ants are accomplishing feats beyond the power of humans: they are growing a monocultural crop year after year without disaster, and they are using an antibiotic apparently so wisely that, unlike people, they are not provoking antibiotic resistance in the target disease-producing organism.
🔥 Answer key (đáp án và giải thích)
1
H
Giải thích chi tiết
Ứng dụng Linearthinking để giải quyết dạng bài Matching Information
📌 Dạng Matching Information chúng ta nên làm cuối cùng, sau khi đã làm các dạng câu hỏi khác nhé DOLBIES, bởi vì lúc này mình đã đọc và hiểu nội dung của bài rồi → sẽ nhanh chóng tìm được vị trí đáp án hơn!!
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Step 1: Phân tích câu hỏi (Matching Information) Two things at which leaf-cutter ants have succeeded but humans have failed .
Dự đoán thông tin cần tìm (SPECIFY): đoạn đúng phải có đủ 2 mảnh rõ ràng:
Hai thành tựu cụ thể của leaf-cutter ants (thường sẽ là 2 hành động/2 “feats”, có thể nối bằng and).
Có so sánh/đối chiếu với humans (ví dụ: “unlike people”, “beyond humans”, “humans can’t”, “beyond the power of humans”…).
-------
Step 2: Locate bằng chứng
Đoạn H (câu cuối) có đúng format “two things” + đối chiếu humans:
Astoundingly, the leaf-cutter ants are accomplishing feats beyond the power of humans : they are growing a monocultural crop year after year without disaster , and they are using an antibiotic (...) so wisely that (...) they are not provoking antibiotic resistance .
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Step 3: Đối chiếu paraphrasing (chốt match đúng)
Two things ⇔ trong đoạn H có 2 “feats” được liệt kê sau dấu “:” và nối bằng and.
leaf-cutter ants have succeeded ⇔ “the leaf-cutter ants are accomplishing feats …” + “they are growing…” + “they are using…” (hai hành động cụ thể).
but humans have failed ⇔ “beyond the power of humans” + “unlike people” (nói rõ con người không làm được / làm kém hơn).
→ Vì câu ở đoạn H vừa có 2 việc cụ thể, vừa có đối chiếu trực tiếp với humans, nên match chuẩn yêu cầu câu hỏi.
=> Match PARAGRAPH H.
❌ Bẫy hay dính khi skim/scan
Dễ chọn đoạn E/F/G vì thấy nhiều từ khoá về “parasites / disease / antibiotics” hoặc “Escovopsis”, tưởng là nói “con người thất bại”. Nhưng các đoạn đó chủ yếu giải thích ký sinh, nguyên nhân tiến hoá, mức độ nhiễm, chứ không nêu rõ 2 thành tựu + đối chiếu humans fail như đoạn H.
B. These ant communities are the dominant plant-eaters of the Neotropics, the region comprising South and Central America, Mexico and the Caribbean. Biologists believe 15 percent of the leaf production of tropical forests disappears down the nests of leaf-cutter ants. In the nest, the leaves are shredded and added to the fungus, which digests the leaves and is in turn eaten by the ants. The attine ants' achievement is remarkable because it allows them to consume, courtesy of their mushroom’s digestive powers, the harvest of tropical forests whose leaves are laden with poisonous chemicals.
C. There are more than 200 known species of the attine ant tribe, divided into 12 groups, or genera. The leaf-cutters use fresh vegetation; the other groups, known as the lower attines because their nests are smaller and their techniques more primitive, feed their gardens with similar leaves which have fallen on the ground and insects that lie on the forest floor. Lower attine ants are all a similar size. However, leaf-cutter worker ants come in made-to-fit sizes – large ants to saw off leaves, medium ones to shred them, and miniature workers to seed them with fungus and clean off alien growths.
D. In 1994, biologists from the United States Department of Agriculture analyzed the DNA of ant funguses. They found the leaf-cutters' fungus was descended from a single pure strain, propagated for at least 23 million years. However, the funguses grown by lower attine ants fell into four different groups, as if the ants had domesticated wild funguses at least four times in evolutionary history. What could be driving these two patterns of fungus gardening, the pure clone cultivation of the leaf-cutters and multiple varieties of the lower attines?
E. The answer has been suggested by Cameron Currie of University of Toronto, it. The pure strain of fungus grown by the leaf-cutters, it seemed to him, resembled the single crops grown by humans to the exclusion of all others, such as potato growing. These ‘monocultures’, which lack the genetic diversity to respond to changing environmental threats, are particularly vulnerable to parasites – organisms which live and feed on their host, often causing harm. Currie felt there had to be a parasite in the ant-fungus system. But a century of ant research did not provide any evidence for his idea. Textbooks describe how leaf-cutter ants scrupulously weed their gardens of all foreign organisms. "People kept telling me, the ants keep their gardens free of parasites," said Currie. Nevertheless, after three years of sifting through attine ant gardens, Currie discovered several alien organisms, particularly a family of parasitic molds called ‘Escovopsis’.
F. Escovopsis is a deadly disease that can devastate a fungus garden in a couple of days. It blooms like a white cloud which envelops the whole garden. Other ants won’t go near it and the ants associated with the garden just starve to death. Evidently, the ants usually manage to keep Escovopsis and other parasites under control. Nevertheless, with any lapse in control Escovopsis will quickly burst forth. Although new leaf-cutter gardens start off free of Escovopsis, within two years some 60 percent become infected.
G. The discovery of Escovopsis’s role brings a new level of understanding to the evolution of the attine ants. In the last decade, evolutionary biologists have been increasingly aware of the role of parasites as driving forces in evolution. With Currie’s work, there is now a possible reason for the different varieties of fungus in the lower attine mushroom gardens- to stay one step ahead of the relentless Escovopsis. Interestingly, the leaf-cutters had in general fewer alien molds in their gardens than the lower attines, yet more Escovopsis infections. Clearly, the price they pay for cultivating a pure variety of fungus is a higher risk from Escovopsis.
H. So how do attine ants keep this parasite under control? People have known for a hundred years that ants have a whitish growth on their body surface. It was thought to be wax but, after examining it under a microscope, Currie discovered a specialized patch on the ants' bodies that harbors a particular kind of bacterium, one well known to the pharmaceutical industry and the source of half the antibiotics used in medicine. This bacterium is a potent poisoner of Escovopsis inhibiting its growth and suppressing spore formation. Astoundingly, the leaf-cutter ants are accomplishing feats beyond the power of humans: they are growing a monocultural crop year after year without disaster, and they are using an antibiotic apparently so wisely that, unlike people, they are not provoking antibiotic resistance in the target disease-producing organism.
are accomplishing feats beyond the power of humans
they are growing a monocultural crop year after year without disaster
and
they are using an antibiotic (...) so wisely that (...) they are not provoking antibiotic resistance
