Life Cycles - Plants
Dandelions disperse their seeds by wind.

Life Cycles - Plants

Life cycles is one of the topics covered in KS2 Science and understanding them is an important part of life. This is the second of two quizzes on the topic and it looks in particular at the life cycles of plants, from seeds to dispersal.

The life cycles of plants are the stages from seed to dispersal. In flowering plants the cycle goes like this: seeds in the soil germinate. They then grow roots and shoots. The next stage is a seedling which matures into an adult plant and makes flowers. Then the plant makes fruit which itself contains seeds. These are spread through dispersal and the cycle starts again. Did you know that some trees have lived for hundreds, or even thousands of years? One yew tree in Llangernyw, Wales, is believed to be at least 4,000 years old! Other plants, such as cress, only live for a few weeks.

Take this quiz on plant life cycles to see how much you know.

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  1. Which of the following plants disperses its seeds by wind?
    Have you ever blown the seeds from a dandelion clock?
  2. Which part of a flowering plant grows into a fruit?
    The fertilised ovary, containing seeds, develops into a fruit
  3. Which part of a flowering plant is male?
    The stamen produces pollen
  4. Flowering plants produce many seeds which never grow. Why do they do this?
    The more seeds a plant produces, the better its chance of reproducing
  5. Which of the following words describes the moment a seed begins to grow?
    Seeds need certain conditions before they can germinate
  6. Why do plants need sunlight?
    Although seeds can germinate without sunlight, plants need it to make their food, using a process called photosynthesis
  7. What is dispersal?
    Plants have several methods of dispersing seeds - by wind, by explosion, by animal, even by water - coconut palms can disperse their seeds (coconuts) by sea
  8. Which of the following is true?
    All plants reproduce, but not all plants reproduce by flowering 
  9. What do seeds need in order to germinate?
    Seeds can germinate without light or soil, but cannot germinate in a cold, dry place
  10. What happens if seeds are planted too closely together?
    Plants need space to spread their roots and stems

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