Question

[Lê Quỳnh Anh]

Read 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

The author mentions cuckoos and cowbirds because they _____

A. share their nests with each other

B. are closely related species

C. raise the young of their birds

D. are social parasites

Answer 1

[Dương Hoàn Anh]

Đáp án D

Tác giả đề cập đến  chim cu và chim bò vì chúng______

Đáp án D – là động vật kí sinh có tính chất xã hội

Dẫn chứng – Câu 1 – 2 – Đoạn 1: “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;”

Động vật kí sinh có tính chất xã hội liên quan đến 1 loài dựa vào 1 loài khác để nuôi nấng con của nó. Giữa các động vật có xương sống, động vật kí sinh có tính chất xã hội được biết đến nhiều nhất là loài chim như chim cu và chim bò.

=> Đưa ra ví dụ minh họa thế nào là động vật kí sinh có tính chất xã hội

Các đáp án khac

A – chia sẻ tổ của chúng với nhau

B – là loài có liên quan gần gũi

C – nuôi nấng chim con của chúng