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Standard VII
Biology
Reproduction
State whether...
Question

State whether the following statements are true or false:​
​
I: Petals helps in attracting insects and birds.​
II: Petals do not protect the reproductive organs.​

A
I-False; II-False
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B
I-False; II-True
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C
I-True ; II-True
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D
I-True ; II-False
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Solution

The correct option is D I-True ; II-False
Petals are the second whorl of a flower from outer to inner side. It serves two main functions :​
  • Attract pollinators such as birds, insects etc.,​
  • Protects the reproductive parts of a flower such as stamens and carpels​

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Q. Consider the following statements.

(i) In Gynandropsis, Passiflora, etc. thalamus is elongated and shows well developed nodes and internodes.
(ii) The floral buds in Agave, Allium, etc. may sometimes get modified into vegetative buds or bulbils.
(iii) Sepals are concerned with protection of flowers in bud condition and petals help to attract insects for pollination.
(iv) Stamens and carpels serve as the male and female reproductive organs respectively.
Which of the following combinations of above statements provides an evidence that flower is a modified shoot?

Q. Match the following parts of flower with their function.

A.SepalsI.Produces pollen grainsB.PetalsII.Protects the flower budC.AntherIII.Attracts insects and birds
Q. Petals are brightly coloured to attract insects.
Q. In each of the questions below are given three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the statements disregarding commonly known facts.

Statements
All petals are flowers.
Some flowers are not petals.
Some petals are colours.

Conclusions
I.Some flowers are colours.
II. Some flowers are not colours.
Q. (1)

State whether the following statements are true or false. If false, correct them.​

​(a) Plants consume oxygen for respiration.

(2)

State whether the following statements are true or false. If false, correct them.​

​(b) Plants produce oxygen during the process of making their own food.

(3)

State whether the following statements are true or false. If false, correct them.​

​(c) Air helps in the movements of sailing yachts and gliders but plays no role in the flight of birds and aeroplanes.

(4)

State whether the following statements are true or false. If false, correct them.​

​(d) Air does not occupy any space.


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