Unit 5B: Life cycles Section 5: Flower parts for reproduction
Objectives
Children should learn:
that plants produce flowers which have male and female organs, seeds are formed when pollen from the male organ fertilises the ovum (female)
Activities
Outcomes
Children:
Using examples and drawings of flowers help children to observe flower structure and to learn the names and function of parts. Using pictures and other secondary sources, explain to children the processes of pollination and fertilisation and the distinction between them. Using a hand lens or microscope or using secondary sources, observe stamen with pollen and pollen grains from a number of different sources. Challenge children to speculate how the differences might be useful.
name the parts of the flower eg stamen, stigma, style, petal, sepal and explain the function of each
explain that seeds are formed after pollination when pollen fertilises the ovum
state that pollen can be transferred by different means eg by wind, by insects
identify differences between pollen grains and suggest a reason for differences eg pollen from one flower can't pollinate flowers of other types of plant, pollen from some flowers needs to stick to insects' bodies
Points to note
Simple flowers eg buttercup and mallow are suitable. It is essential to avoid composite plants eg daisy, and those with coloured sepals eg tulip because at this stage, they are confusing.
SAFETY - Some children may be allergic to pollen (hay fever).
This unit is divided into sections. Each section contains a sequence of
activities with related objectives and outcomes. You can view this unit by
moving through the sections or print/download the whole unit.
SAFETY - Some children may be allergic to pollen (hay fever).