Question

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WHY DO FLOWERS HAVE FRAGRANCES?

(1) Flowers get their scent from a mixture of volatile organic compounds (VOCs) produced

by the plant. The fragrance is often strongest in the petals. Different flowering plant species

have a diversity of VOCs and no two fragrances are the same. The purpose of scent is to
attract pollinators and repel herbivores. Flowers also use colour and shape to attract

pollinators.

(2) The scent is the strongest when a flower is ready for pollination- a full bloom’s smell is

more powerful than a bud’s. Strongest emissions also coincide with the active phase of

visiting pollinators. Plants pollinated by moths usually emit the most fragrance in the evening

or night (when moths are active), while plants pollinated by bees produce the most scent

during the day(when bees are active).



A.1 On the basis of your reading of the passage, answer the following questions as briefly
as possible.

(i) Which part of a flower gives out the strongest fragrance?

(ii) What three things do flowers use to attract pollinators?

(iii) When is the flowers scent the strongest?

(iv) Which plants emit the most fragrance in the morning and which ones in the

evening?

(v) Which word in the passage means the same as ‘variety’?​

Answer 1

Explanation:

1) petals give the strongest fragrance of the flower

2) Shape.

Size.

Color.

3) plants are most fragrant at night

4) Plumeria. Often referred to as Frangipani or Champa, Plumeria is a tropical/subtropical flower that is softly fragrant during the day and is most fragrant during the night. It does so to attract sphinx moths to pollinate them. These shrubs come in different colours and varieties.

5)VOCs

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Answer 2

Answer:

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