Question

Five jumbled sentences (labelled 1, 2, 3, 4, and 5), related to a topic, are given below. Four of them can be put together to form a coherent paragraph. Identify the odd sentence out and key in the number of that sentence as your answer.

• A. About half of all the oxygen we breathe is made near the surface of the ocean by phytoplankton that photosynthesize just like land-dwelling plants.
• B. A team of scientists that includes Boston University experts has discovered they also produce oxygen on the seafloor.
• C. The research team used deep-sea chambers that land on the seafloor and enclose the seawater, sediment, polymetallic nodules, and living organisms.
• D. The discovery is a surprise considering oxygen is typically created by plants and organisms with help from the sun—not by rocks on the ocean floor.
• E. The deep-sea rocks, called polymetallic nodules, don’t only host a surprising number of sea critters.

Hint:

Look for sentences that introduce or explain the main topic, while others support it or provide additional details.

Answer 1

The Correct Option is C

To solve this question, we need to identify which sentence does not fit with the others to form a coherent paragraph. Let's analyze each sentence based on thematic relevance and context:

1. About half of all the oxygen we breathe is made near the surface of the ocean by phytoplankton that photosynthesize just like land-dwelling plants.
2. A team of scientists that includes Boston University experts has discovered they also produce oxygen on the seafloor.
3. The research team used deep-sea chambers that land on the seafloor and enclose the seawater, sediment, polymetallic nodules, and living organisms.
4. The discovery is a surprise considering oxygen is typically created by plants and organisms with help from the sun—not by rocks on the ocean floor.
5. The deep-sea rocks, called polymetallic nodules, don’t only host a surprising number of sea critters.

Let's examine the logical flow:

• Sentence 1 introduces the concept of oxygen production by phytoplankton near the ocean's surface.
• Sentence 2 introduces new research about oxygen production on the seafloor.
• Sentence 3 describes the method used by the research team, which doesn't directly connect with the discovery itself.
• Sentence 4 highlights the surprising aspect of the discovery related to the usual mechanisms of oxygen production.
• Sentence 5 discusses the polymetallic nodules and their ecological significance, linking to the discovery.

By examining these sentences, we can see that Sentence 3, which discusses the deep-sea chambers used by the research team, does not fit within the thematic narrative of the other sentences. The other sentences coherently describe new insights into oxygen production on the ocean floor, tying it with phytoplankton and the unusual nature of deep-sea ecological functions.

Therefore, the odd sentence out is Sentence 3: "The research team used deep-sea chambers that land on the seafloor and enclose the seawater, sediment, polymetallic nodules, and living organisms."

Answer 2

To solve this jumbled paragraph problem effectively, we need to identify which sentence does not belong with the others based on context and logical arrangement. Let's analyze each sentence:

1. Sentence 1: "About half of all the oxygen we breathe is made near the surface of the ocean by phytoplankton that photosynthesize just like land-dwelling plants." 
   This sentence introduces the role of phytoplankton in producing oxygen.
2. Sentence 2: "A team of scientists that includes Boston University experts has discovered they also produce oxygen on the seafloor." 
   This sentence indicates a discovery related to the production of oxygen on the seafloor.
3. Sentence 3: "The research team used deep-sea chambers that land on the seafloor and enclose the seawater, sediment, polymetallic nodules, and living organisms." 
   This sentence describes a specific method used by a research team, but does not directly relate to the discovery or main topic discussed in the other sentences.
4. Sentence 4: "The discovery is a surprise considering oxygen is typically created by plants and organisms with help from the sun—not by rocks on the ocean floor." 
   This sentence elaborates on the surprise factor of the discovery that oxygen is being produced by unconventional means.
5. Sentence 5: "The deep-sea rocks, called polymetallic nodules, don’t only host a surprising number of sea critters." 
   This sentence provides additional information about polymetallic nodules related to sea creatures.

To form a coherent paragraph, sentences 1, 2, 4, and 5 can be logically connected as they pertain to oxygen production and the surprising discovery related to the seafloor. Sentence 3, however, is more about the methodology (deep-sea chambers) used by researchers and does not directly contribute to the central topic of oxygen production.

Therefore, the odd sentence out, which does not fit well with the main topic of the other sentences, is: 
The research team ed deep-sea chambers that land on the seafloor and enclose the seawater, sediment, polymetallic nodules, and living organisms.