The World of Plants – What you need to know

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The World of Plants – What you need to know
The numbers refer to pages in ‘Leckie & Leckie Success Guide’
Introducing plants (p18-19)
G
Give four examples of advantages of their being a wide variety of
plants
C
Explain possible results of a reduction in the variety of plants
G
Describe three specialised plant uses (raw materials, food,
medicine)
C
Describe a plant production process e.g. malting barley
C
Describe two potential uses of plants e.g. new medicines, new food
sources
Growing plants (p20-25)
G
Describe the function of the seed coat, embryo and food store in a
seed
G
Describe the effect of temperature, water availability and oxygen
on germination
C
Explain how percentage germination of seeds varies over a range of
temperatures
G
Describe the functions of the parts of a flower (sepal, petal,
stamen, anther, stigma, ovary, nectary)
C
State and explain the differences between wind and insect
pollinated flowers
G
State the meanings of pollination and fertilisation
G
Describe the difference between self pollination and cross
pollination
C
Describe the growth of the pollen tube and fusion of the sex cells
G
Describe fruit formation after fertilisation
C
Describe one example of each of the three dispersal mechanisms
(wind, animals – internal, animals – external)
G
Describe artificial propagation by cuttings and grafting
C
Explain the advantages to man of artificial propagation
C
State that a clone is a genetically identical group of plants
produced from a single parent
G
Describe asexual reproduction by runners and tubers
C
Describe the advantages of both sexual and asexual reproduction
to plants
Making food (p26-31)
G
Explain the need for transport systems in plants
C
Describe the structure of xylem and phloem tissue
C
Explain how xylem cells provide support to the plant
G
Describe the pathway of movement of water, minerals and food in
the xylem and phloem
G
State that plants take in carbon dioxide from the air through
stomata can open and close
C
Describe the structure and function of the different parts of a
leaf (cuticle, epidermis, palisade mesophyll, spongy mesophyll)
G
State that water vapour is lost through open stomata
G
State that green plants make their own food which is stored as
starch
C
State that the product of photosynthesis may be converted to
structural or storage carbohydrates, or used as an energy source
G
State that green plants use chlorophyll to convert light energy to
chemical energy
G
Give a word equation for photosynthesis, and identify the raw
materials and products
C
Explain what is meant by a limiting factor, and describe the main
limiting factors in photosynthesis
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