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Practice Listening: Highlight Correct Summary ID: #33893 Short Snakes
Instructions ›
You will hear a recording. Click on the paragraph that best relates to the recording.

Transcript:

Snakes cannot hear or speak as we do. Rather, they communicate through chemical signals by means of the highly specialized vomer nasal organ VNO or Jacobson's Organ. The odiferous particles such as hormones or pheromones, which they pick up from their environment using their tongue, are sent to the VNO, in whose interior there are neurons in charge of transforming this chemical information into electrical impulses. The brain then takes care of interpreting these impulses and activating an internal function or a specific behavior in response to the original stimulus. Currently, it is known that other vertebrates have similar organs, but these have proven not being better or even at the same level of snakes VNO which has a unique ability for detecting and processing chemical information.
* Click on the correct answer

Result:

AI explanationShows the answer. Tap to open.
Option 1: "Snakes are good receptors of external information due to their VNO."

Explanation: This option accurately summarizes the main idea of the text, which emphasizes the role of the vomer nasal organ (VNO) in snakes' ability to detect and process chemical signals from their environment. The text states that snakes communicate through chemical signals and that the VNO is specialized for this purpose, making them effective receptors of external information.

Option 2: "Not only snakes possess a Jacobson's organ, as some mammals also have it."

Explanation: While it is true that other vertebrates have similar organs, the text does not focus on mammals or suggest that they possess a Jacobson's organ at the same level of efficiency as snakes. This option introduces information that is not explicitly supported by the text, making it misleading.

Option 3: "Snakes can recognize the food they eat by means of their VNO."

Explanation: This option is incorrect because the text does not specifically mention that snakes use their VNO to recognize food. Instead, it discusses their ability to detect chemical signals in general, which may include food but is not limited to it. Thus, this option presents partial information.

Option 4: "Although the brains of snakes are extremely small in proportion to their bodies, they survive thanks to their VNO."

Explanation: This option introduces a comparison about the size of snakes' brains that is not mentioned in the text. The text focuses on the VNO's role in communication and chemical detection, without discussing brain size or survival in relation to it. Therefore, this option contains contradictory information.

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