Câu hỏi:
12/03/2020 1,082Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.
What unusual or unique biological train led to the remarkable diversification and unchallenged success of the ants for over 50 million years? The answer appears to be that they were the first group of predatory eusocial insects that both lived and foraged primarily in the soil and in rotting vegetation on the ground. Eusocial refers to a form of insect society characterized by specialization of tasks and cooperative care of the young; it is rare among insects. Richly organized colonies of the land made possible by eusociality enjoy several key advantages over solitary individuals.
Under most circumstances groups of workers are better able to forage for food and defend the nest, because they can switch from individual to group response and back again swiftly and according to need. When a food object or nest intruder is too large for one individual to handle, nestmates can be quickly assembled by alarm or recruitment signals. Equally important is the fact that the execution of multiple-step tasks is accomplished in a series-parallel sequence. That is, individual ants can specialize in particular steps, moving from one object (such as a larva to be fed) to another (a second larva to be fed). They do not need to carry each task to completion from start to finish - for example, to check the larva first, then collect the food, then feed the larva. Hence, if each link in the chain has many workers in attendance, a sense directed at any particular object is less likely to fail. Moreover, ants specializing in particular labor categories typically constitute a caste specialized by age or body form or both. There has been some documentation of the superiority in performance and net energetic yield of various castes for their modal tasks, although careful experimental studies are still relatively few.
What makes ants unusual in the company of eusocial insects is the fact that they are the only eusocial predators (predators are animals that capture and feed on other animals) occupying the soil and ground litter. The eusocial termites live in the same places as ants and also have wingless workers, but they feed almost exclusively on dead vegetation.
(Source: TOEFL Reading)
All of the following terms are defined in the passage EXCEPT ______.
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Trả lời:
Giải bởi Vietjack
Tất cả thuật ngữ dưới đây đều được giải thích ngoại trừ _____.
C. caste (n): đẳng cấp xã hội
Thông tin:
Eusocial refers to a form of insect society characterized by specialization of tasks and cooperative care of the young; it is rare among insects.
in a series-parallel sequence. That is, individual ants can specialize in particular steps, moving from one object (such as a larva to be fed) to another (a second larva to be fed).
(predators are animals that capture and feed on other animals)
Phương án
Tạm dịch:
Eusocial là một từ chỉ một loại hình xã hội côn trùng đặc trưng bởi sự chuyên môn hóa về nhiệm vụ và sự phối hợp chăm sóc con của nhau; đây là điều hiếm trong giới côn trùng.
trong a series-parallel sequence. Có nghĩa là, mỗi con kiến có thể chuyên về một bước cụ thể nào đó từ việc cho ăn một con ấu trùng này đến việc cho ăn một con ấu trùng khác.
(predators là những động vật mà chuyên bắt và ăn những động vật khác)
Chọn C
Nhà sách VIETJACK:
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