Chapter 4-Plants

Question 0

What is cross pollination?

Answer 0

When plants obtain pollen from the flower of a different plant of the same species. Pollen grains can be transferred by wind, insects and animals.

Question 1

What is self-pollination?

Answer 1

When plants pollinate themselves.

Question 2

True or false. Cross pollination increases variation amongst offspring.

Answer 2

True.

Question 3

What are the traits of an insect pollinated flower?

Answer 3

Flowers are attractive with brightly coloured petals and nectaries.

Question 4

What are the traits of a wind-pollinated flower?

Answer 4

Flowers are less conspicuous with no large scented petals or nectar. The shape enables pollen grains to be shaken from the plant and carried away by the wind.

Question 5

How do fruits help to disperse seeds?

Answer 5

Fruits help plants to disperse their seeds through:
-animals (tomatoes, grapes, apples)
-water (coconuts)
-wind (grasses and dandelions)
Some plants disperse themselves by opening suddenly and throwing seeds long distances.

Question 6

What is the photosynthesis equation?

Answer 6

Carbon dioxide+water

Sunlight
—————> glucose+oxygen
Chlorophyll