Read 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 following questions. Fish that live on the sea bottom benefit by being flat and hugging the contours. There are two very different types of flatfish and they have evolved in very separate ways. The skates and rays, relatives of the sharks, have become flat in what might be called the obvious way. Their bodies have grown out sideways to form great “wings”. They look as ...
Tôi yêu Việt Nam | Chat Online | |
02/09 11:35:10 (Tiếng Anh - Lớp 12) |
Read 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 following questions.
Fish that live on the sea bottom benefit by being flat and hugging the contours. There are two very different types of flatfish and they have evolved in very separate ways. The skates and rays, relatives of the sharks, have become flat in what might be called the obvious way. Their bodies have grown out sideways to form great “wings”. They look as though they have been flattened but have remained symmetrical and “the right way up”. Conversely, fish such as plaice, sole, and halibut have become flat in a different way. There are bony fish which have a marked tendency to be flattened in a vertical direction; they are much “taller” then they are wide. They use their whole, vertically flattened bodies as swimming surfaces, which undulate through the water as they move. Therefore, when their ancestors migrated to the seabed, they lay on one side than on their bellies. However, this raises the problem that one eye was always looking down into the sand and was effectively useless – In evolution this problem was solved by the lower eye “moving” around the other side. We see this process of moving around enacted in the development of every young bony flatfish. It starts life swimming near the surface, and is symmetrical and vertically flattened, but then the skull starts to grow in a strange asymmetrical twisted fashion, so that one eye, for instance the left, moves over the top of the head upwards, and old Picasso – like vision. Incidentally, some species of 20 flatfish settle on the right side, others on the left, and others on either side.
Question 37:
Lựa chọn một trả lời để xem Đáp án chính xác Báo sai đáp án hoặc câu hỏi |
A. symmetrical flatfish 0 % | 0 phiếu |
B. bony flatfish 0 % | 0 phiếu |
C. evolution of flatfish 0 % | 0 phiếu |
D. different types of flatfish 0 % | 0 phiếu |
Tổng cộng: | 0 trả lời |
Trắc nghiệm liên quan
- Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. The students got high marks in the test but Mary stood out. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. Today, Amur leopard, one of the world’s most endangered wild cats, is found only in the Amur ... (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. Rocks have forming, wearing away and re-forming ever since the Earth took shape. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. The nesets of most bird species are strategic placed to camouflage them against predators (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. The mountain climbers proceeded forward on their long trek up the side of the mountain. (Tiếng Anh - Lớp 12)
- Read 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 following questions. According to airline industry statistics, almost 90 percent of airline accidents are survivable or ... (Tiếng Anh - Lớp 12)
- Read 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 following questions. According to airline industry statistics, almost 90 percent of airline accidents are survivable or ... (Tiếng Anh - Lớp 12)
- Read 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 following questions. According to airline industry statistics, almost 90 percent of airline accidents are survivable or ... (Tiếng Anh - Lớp 12)
- Read 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 following questions. According to airline industry statistics, almost 90 percent of airline accidents are survivable or ... (Tiếng Anh - Lớp 12)
- Read 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 following questions. According to airline industry statistics, almost 90 percent of airline accidents are survivable or ... (Tiếng Anh - Lớp 12)
Trắc nghiệm mới nhất
- Calcium hydroxide là chất rắn màu trắng, ít tan trong nước. Phát biểu nào sau đây sai? (Khoa học tự nhiên - Lớp 9)
- Ứng dụng của silicon là (Khoa học tự nhiên - Lớp 9)
- Từ cát thạch anh (cát trắng) sản xuất ra (Khoa học tự nhiên - Lớp 9)
- Công đoạn chính để sản xuất đồ gốm theo thứ tự lần lượt là (Khoa học tự nhiên - Lớp 9)
- Phát biểu nào sau đây không đúng về silicon? (Khoa học tự nhiên - Lớp 9)
- Vì sao vôi tôi được sử dụng để xử lí SO2 trong khí thải? (Khoa học tự nhiên - Lớp 9)
- Nhỏ một vài giọt hydrochloric acid lên một viên đá vôi thu được hiện tượng nào sau đây? (Khoa học tự nhiên - Lớp 9)
- Để sản xuất thủy tinh loại thông thường, cần các nguyên liệu nào sau? (Khoa học tự nhiên - Lớp 9)
- Vôi tôi là tên gọi của hợp chất nào sau đây? (Khoa học tự nhiên - Lớp 9)
- Quặng nào sau đây không có thành phần chủ yếu là oxide của kim loại? (Khoa học tự nhiên - Lớp 9)