Câu hỏi:
03/04/2020 2,872Read the following passage and mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the questions
Social parasitism involves one species relying on another to raise its young. Among vertebrates, the best known social parasites are such birds as cuckoos and cowbirds; the female lays egg in a nest belonging to another species and leaves it for the host to rear
The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores
In a raid, several thousand Polyergus workers will travel up to 500 feet in search of a Formica nest, penetrate it, drive off the queen and her workers, capture the pupal brood, and transport it back to their nest. The captured brood is then reared by the resident Formica workers until the developing pupae emerge to add to the Formica population, which maintains the mixed-species nest. The Formica workers forage for food and give it to colony members of both species. They also remove wastes and excavate new chambers as the population increases
The true extent of the Polyergus and dependence on the Formica becomes apparent when the worker population grows too large for existing nest. Formica scouts locate a new nesting site, return to the mixed-species colony, and recruit additional Formica nest mates. During a period that may last seven days, the Formica workers carry to the new nest all the Polyergus eggs, larvae, and pupae, every Polyergus adult, and even the Polyergus queen
Of the approximately 8000 species of ants in the world, all 5 species of Polyergus and some 200 species in other genera have evolved some degree of parasitic relationship with other ants
What does the author mean by stating that “The dulotic species of ants, however, are the supreme social parasites”
Đáp án chính xác
Câu hỏi trong đề:
20 Đề thi thử Tiếng Anh năm 2020 chuẩn cấu trúc bộ giáo dục !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
Quảng cáo
Trả lời:
Giải bởi Vietjack
Đáp án C
Tác giả có ý nghĩa gì bằng cách nói rằng "Tuy nhiên các loài dulotic của kiến là những ký sinh trùng xã hội tối cao"
Đáp án C – Polyergus phụ thuộc nặng vào Formica
Chúng ta cần đọc hết đoạn số 2 để hiểu được ý nghĩa tác giả muốn nói ở đây là gì?
Câu 1 – 2 – Đoạn 2: “The dulotic species of ants, however, are the supreme social parasites. Consider, for example, the unusual behavior of ants belonging to the genus Polyergus. All species of this ant have lost the ability to care for themselves. The workers do not forage for food, feed their brood or queen, or even clean their own nest. To compensate for these deficits, Polyergus has become specialized at obtaining workers from the related genus Formica to do these chores
Tạm dịch – Tuy nhiên, loài dulotic của kiến là loài động vật kí sinh mang tính chất xã hội cao.
Ví dụ xem xét các hành vi bất thường của loài kiến thuộc về chi Polyergus. Tất cả các loài này đều đã mất đi khả năng tự chăm sóc bản thân. Kiến thợ không tìm đồ ăn, nuôi con hoặc nữ hoàng, thậm chí dọn chính cái ổ của chúng. Để bù đắp cho những thiếu hụt này, Polyergus đã trở thành chuyên gia trong việc giành kiến thợ từ chi Formuca để làm những việc này.
=> Chúng k thể làm bất cứ việc gì, giành từ kiến thợ thuộc chi Formuca.
Các đáp án khác
A – Polyergus được phát triển cao hơn so với Formica
B – Formica đã phát triển các vai trò chuyên dụng
D – Formica không sinh sản 1 cách nhanh chóng đủ để tự chăm sóc bản thân chúng
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
We arrived at the conference. We realized our reports were still at home
Xem đáp án »
03/04/2020
35,574
Câu 2:
Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questions
The new manager explained to the staff that she hoped to ___ new procedures to save time and money
Xem đáp án »
03/04/2020
30,472
Câu 3:
Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questions
Can I ___ our brain for a moment? I can’t do this crossword by myself
Xem đáp án »
07/06/2024
23,020
Câu 4:
Mark the letter A, B, C, D on your answer sheet to indicate the word that is OPPOSITE in meaning to the underlined part
These machines are older models and have to be operated by hand
Xem đáp án »
03/04/2020
22,654
Câu 5:
Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questions
Over 20 years ___ but I never forgot the time we first met each other
Xem đáp án »
02/04/2020
19,420
Câu 6:
Mark the letter A, B, C, D on your answer sheet to indicate the word that is CLOSEST in meaning to the underlined part
The detective was asked to probe into the mysterious disappearance of the painting
Xem đáp án »
03/04/2020
18,094
Câu 7:
Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
I have never played golf before.
Xem đáp án »
03/04/2020
17,720
về câu hỏi!