Questions 13-16 are based on the following passage.
The study of cetacean intelligence has added to our understanding of dolphin behavior. Even though cetaceans, which are marine animals including dolphins, whales, and porpoises, are widely considered intelligent species, conditions about the type and extent of dolphin intelligence have not yet been reached. However, there are several things that we do know about the ways in which dolphins communicate and behave in groups.
Researchers study the level of communication among dolphins because communication systems can offer insight into an animal's intelligence. Dolphins produce two primary types of vocalizations called clicks and whistles. Dolphins generally use clicks for the purposes of echolocation and whistles for communication. Dolphins emit clicks as rapid broadband bursts that are sent out into their environment and then echo back, giving them information about their surroundings. Whistles differ from clicks by being sent out as narrow-band frequency modulated signals, which are for ‘communications such as contact calls. Strong evidence supports the idea that dolphins use signature whistles to identify and call to each other.
One hypothesis called the “acoustic flashlight” hypothesis maintains that dolphins may be able to leam passively about their surroundings by listening in on the echolocative inspections of other dolphins. Scientists are researching this idea by looking at how dolphins participate in postural Pointing, an activity that humans perform when they point a finger to direct another person towards an objector location
Communication is also an important part of how dolphins behave in groups, which can range in size from a pair of dolphins to apod of hundreds of individuals. Researchers have noticed that large packs rely on a highly organized method of communication when responding to predators, such as sharks. When a group of dolphins reacts to an unexpected disturbance, it will quickly move in near-unison to avoid the threat. In this way, dolphins rely on visual and auditory cues to communicate their location and to interpret the locations of others in the pod.
it can be inferred from the passage that if other animal doesn't have a cornmunication system as highly advanced a that of a dolphin, then ....
the other animal will be less likely to survive a shark attack
the other animal is probably 2 whale or porpoise
the other animal probably does not rave in a group with others of its kind
the other animal does not engage in postural pointing
the other animal likely considered less inteligent than the dolphin
Mahasiswa/Alumni Universitas Negeri Yogyakarta
Jawaban yang benar adalah B.
Soal menanyakan “Dari teks tersebut dapat disimpulkan bahwa jika hewan lain tidak memiliki sistem komunikasi yang setinggi lumba-lumba, maka ....”
Pada paragraf pertama dijelaskan bahwa bangsa paus seperti lumba-lumba, paus, dan porpoise memang diketahui sebagai hewan laut yang cerdas, namun belum ada yang mencapai kecerdasan setingkat lumba-lumba. Infromasi tersebut ada pada kalimat “Even though cetaceans, which are marine animals including dolphins, whales, and porpoises, are widely considered species, conclusions about the type end extent of dolphin intelligence have not yet been reached.”
Dengan demikian, berdasarkan teks dapat disimpulkan hewan lain yang tidak memiliki sistem komunikasi setinggi lumba-lumba, dapat digolongkan sebagai paus atau porpoise (the other animal is probably a whale or porpoise).
Jadi, jawaban yang benar adalah B.
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The sentence, "While the effect of El Nino are sometimes weak, at the other times they are very strong." in the second paragraph means ____.
The author discusses the number of species found on a coral head in the fourth paragraph in order to ....
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