Pollination

1. Which of the following statements on cross-pollination is not true?

• Pollen from a flower is transferred to on the stigma of a different flower on another plant

• Cross-pollination produces health offspring

• An example of a new variety of plant produced is the orchid.

• Pollen from a flower is transferred to the stigma of a different flower on the same plant.

1. Diagram 21 shows self-pollination occurring in a flower.

Which of the following is the next step?

• A pollen tube will emerge from a pollen grain

• The anther develops into the seed

• The stamen and stigma wilt

• The sepal shrinks and falls off

3. Why are flowers colourful?

• To attract insects for pollination

• To produce good seeds from the flowers

• To produce good fruits

• To help the plant making food

4. Which of the following plants is pollinated by the wind?

• Morning glory

• Flame of the Forest

• Orchid

• Maize

5. Which characteristics of plants pollinated by wind and insects is not true?

Characteristics Pollinated Pollinated

by wind by insects

• Pollen Size Small Big

• Style Long Short

• Stalk Long/ Outside the Short

  leaf

• Scent Fragrant Fragrant

6. Self-pollination is a process that happens

I when the pollens from a flower is transferred to the stigma of the same flower

II when the pollens from a flower is transferred to the stigma of a different flower on the same plant

III when the pollens from a flower is transferred to the stigma of a flower on a different plant

• I only

• I and II only

• II and III only

• I, II and III

7. A flower produces a lot of pollen grains that are light, small and smooth. It has long filaments that dangle out of the flower. This flower is most probably found on a

I lalang

II hibiscus plant

III maize plant

• I and II only

• I and III only

• II and III only

• I, II and III

8. Diagram 22 shows a bee that lands on a flower.

Which of the following is probably a characteristic of the flower?

• White in colour

• Scentless

• Short and sticky stigma

• Has many pollen grains

9. Which of the following matches a flower and its pollination agent correctly?

• Hydrilla Wind

• Maize Wind

• Durian Insects

• Flame of the Forest Water

10. A plant has big anthers that dangle out from the flower on long filaments. It has a long and hairy stigma. The pollen grains are most probably transferred by

• animals

• wind

• human

• water