Fungi - Marvel EDU

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Practice Listening: Highlight Correct Summary ID: #4621 Short Fungi

Instructions ›

You will hear a recording. Click on the paragraph that best relates to the recording.

Transcript:

You may be familiar with the word fungi but, if you aren't, well, mushrooms are fungi. Today I want to talk about their relationship with plants. Fungi, unlike plants, cannot extract the nutrients they need from soil, water and sunlight because they possess no chlorophyll. They have to absorb the food they require from plants. They are parasites, if you like. Some, like mycorrhiza, have a mutually beneficial relationship with plants, meaning that neither organism is harmed. In fact, it's quite the opposite. The fungi attach themselves to the plant's root and provide it with essential elements such as phosphorus. The plant, in return, gives the fungi sugars. Other types of fungi are what we call pathogenic. These fungi enter the plant by piercing the outer layer of the leaves or roots, and then poisoning the plant cells and absorbing them.

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Fungi produce toxins such as chlorophyll that kill plants. They feed on plant tissue as they don't possess the means to produce their own food. This is because they lack an essential chemical needed to do this. Plants benefit from the presence of fungi because they provide the plant with essential nutrients. Fungi produce the nutrients through a process involving a reaction between sunlight and the chemical chlorophyll. The relationship between fungi and plants is dependent on the species of fungi in question. Whereas some fungi have a positive impact on plants, others can cause death by breaking down the plant tissue. Plants use fungi as a source of food. Their roots pierce the outer lining layers of fungi and extract chemicals such as phosphorus. This can cause the fungi to be deprived of nutrients over time and can result in death.

Result:

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Option 3: "The relationship between fungi and plants is dependent on the species of fungi in question. Whereas some fungi have a positive impact on plants, others can cause death by breaking down the plant tissue."

Explanation: This option accurately summarizes the text by highlighting the varying relationships between fungi and plants. It reflects the main idea that some fungi are beneficial, providing nutrients, while others are pathogenic and harmful, aligning with the text's discussion of mycorrhiza and pathogenic fungi.

Option 1: "Fungi produce toxins such as chlorophyll that kill plants. They feed on plant tissue as they don't possess the means to produce their own food. This is because they lack an essential chemical needed to do this."

Explanation: This option incorrectly states that fungi produce chlorophyll, which is not true as fungi lack chlorophyll entirely. Additionally, it misrepresents the relationship by suggesting that fungi kill plants through toxins, whereas the text describes both beneficial and harmful relationships.

Option 2: "Plants benefit from the presence of fungi because they provide the plant with essential nutrients. Fungi produce the nutrients through a process involving a reaction between sunlight and the chemical chlorophyll."

Explanation: This option is incorrect because it inaccurately claims that fungi produce nutrients through photosynthesis, which is not the case. The text explains that fungi absorb nutrients from plants and do not have chlorophyll, thus they cannot produce their own food.

Option 4: "Plants use fungi as a source of food. Their roots pierce the outer lining layers of fungi and extract chemicals such as phosphorus. This can cause the fungi to be deprived of nutrients over time and can result in death."

Explanation: This option is incorrect as it misrepresents the relationship by suggesting that plants feed on fungi. The text states that fungi provide nutrients to plants, not the other way around. It also inaccurately implies that fungi can die from nutrient deprivation caused by plants.

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