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TOEFL listening: How do botanists define a seed?

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50 TOEFL lectures   50 TOEFL conversations

Now listen to a conversation.

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 87933 listened

Narrator:
Now answer the following questions. You may use your notes to help you.

1). What is the lecture mainly about?
(A) The history of integuments
(B) The distinction between seeds and nuts
(C) The botanical definition of a nut
(D) The nutritional value of nuts and seeds

2). According to the professor, how do botanists define a seed?
(A) It is the part of a plant that will reproduce itself when germinated.
(B) It is any kernel used in cooking that is found within a shell.
(C) It is a plant fruit that does not attach itself to the ovary of a nut.
(D) It is a plant embryo completely encased in an integument.

Narrator:
Listen again to part of the passage and answer the following question.

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 32563 listened

3). What does the professor mean when he says this: "Clear as a bell, right?"
(A) He thinks the explanation is self-apparent.
(B) He is expressing irritation at the students'' stupidity.
(C) He suspects that the scientists are playing a joke.
(D) He is acknowledging that the issue is confusing.

4). Why does the professor mention kernels?
(A) To compare chestnut seeds with watermelon seeds
(B) To highlight the confusion between nuts and seeds
(C) To argue against the botanical definition of a nut
(D) To illustrate a point about compound ovaries

5). What is true of both nuts and seeds?
(A) They have an embryo plus an integument.
(B) They have a plant fruit unattached to an ovary.
(C) They are extremely nutritious.
(D) They will grow into new plants when buried.

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50 TOEFL lectures
50 TOEFL lectures
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