Topic: P5 Science (Reproduction of Flowering Plants with Modified 2013 PSLE Science Question)
For flowering plants, pollination and fertilisation need to take place in flowers before flower can bear into fruits.
Pollination is the transfer of pollen grains from anther of a flower to the stigma of the same flower or a different flower of the same kind.
Anther is the MALE part of the flower that produces and stores pollen grains.
Stigma is the FEMALE part of the flower that receives pollen grains.
(stigma can be remembered as sticky mama :P)
Pollination can be carried out with the help of wind or animals including insects or birds. Generally these animals feed on nectar in the flower.
Animals-pollinated flowers generally have the following features:
Brightly colour petals to attract animals
Big flowers or small cluster flowers to attract animals
Scented flowers to attract animals
Have nectar to attract animals
Anthers usually does not hang out of flower to brush against insect
Sticky pollen grains to stick on animals
Sticky stigma to receive pollen grain from animals
As seen from the above, the plant put in a lot of effort to ‘grow’ the flowers.
Examples of such flowers include hibiscus, ixora, morning glory and many others.
Modified PSLE Science Question 2013
Characteristics of Flower F
Characteristic of insect G
Suggest a reason why Insect G is attracted to the smell of Flower F? (1m)
Answer: It is because Insect G thought that flower F is food, thus it is attracted to smell of Flower F
Explanation: It is similar to bees visiting sweet-scented flowers for nectar to feed on.
What is the role of Insect G? (1m)
Answer: Insect G acts as a pollinator to transfer pollen grain from the anther of the male flower to thestigma of another female flower.
Explanation: Flowers can be wind-pollinated or animal-pollinated.
Since the question here did not mention anything about wind, high likely it is pollinated by animal and in here it is insect G,
0.5m for Pollinator, 0.5m for definition of pollination.
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