B1.5 – Plants and Photosynthesis
(Triple)
Name: _____________________________________
Class: ______________________________________
Teacher: ____________________________________
1.5 PLANTS AND PHOTOSYNTHESIS
Learners should be able to demonstrate and apply their knowledge and understanding of:
Specification Point Revised
(a) the importance of photosynthesis, whereby green plants and other
photosynthetic organisms use chlorophyll to absorb light energy and convert
1
,carbon dioxide and water into glucose, producing oxygen as a by-product and be
able to state the word equation for photosynthesis
(b) the conditions needed for photosynthesis to take place and the factors which
affect its rate, including temperature, carbon dioxide and light intensity; these as
limiting factors of photosynthesis
(c) the practical techniques used to investigate photosynthesis: the use of sodium
hydroxide to absorb carbon dioxide; how to test a leaf for the presence of starch;
how oxygen and carbon dioxide sensors and data loggers could be used
(d) the uses made by plant cells of the glucose produced in photosynthesis:
respired to release energy; converted to starch for storage; used to make
cellulose, proteins and oils
(e) the structure of a leaf and be able to label the following structures: cuticle,
epidermis, stomata, palisade layer, spongy layer, xylem and phloem; the structure
of stomata to include guard cells and stoma; the fact that stomata can open and
close to regulate transpiration and allow gas exchange
(f) the importance of water to plants: use in photosynthesis, transport of minerals
and support
(g) the significance of root hairs in increasing the area for absorption in a root; the
role of osmosis in the uptake and movement of water through a plant;
(h) the uptake of mineral salts by root hairs by active transport
(i) the role of xylem in transport of water within plants; the role of transpiration in
the movement of water through a plant
(j) the effect of different environmental conditions on the rate of transpiration from
a plant / plant cutting
(k) the role of phloem in carrying sucrose from the photosynthetic areas to other
parts of the plant for use in respiration or converted into starch for storage
(l) the effects of plant nutrient deficiencies on plant growth: lack of nitrates results
in poor growth; deficiency of potassium results in yellowing of the leaf; deficiency
of phosphate results in poor root growth; the use of NPK fertilisers
SPECIFIED PRACTICAL WORK
∙ Investigation of the factors affecting photosynthesis
∙ Investigation into factors affecting transpiration
a – everyone
a – higher
a – triple
2
, Lesson 1 – The Leaf
SEREN: Evaluate the structure of a leaf and its adaptations
RHAI: Give the word equation for photosynthesis
MWYAFRIF: State the reactants and products of photosynthesis
PAWB: Describe the process of photosynthesis
Starter –
• What factors do plants need to be able to survive?
• What do they produce?
• How do plants obtain energy?
Definition: Autotrophic
Word Equation:
3
(Triple)
Name: _____________________________________
Class: ______________________________________
Teacher: ____________________________________
1.5 PLANTS AND PHOTOSYNTHESIS
Learners should be able to demonstrate and apply their knowledge and understanding of:
Specification Point Revised
(a) the importance of photosynthesis, whereby green plants and other
photosynthetic organisms use chlorophyll to absorb light energy and convert
1
,carbon dioxide and water into glucose, producing oxygen as a by-product and be
able to state the word equation for photosynthesis
(b) the conditions needed for photosynthesis to take place and the factors which
affect its rate, including temperature, carbon dioxide and light intensity; these as
limiting factors of photosynthesis
(c) the practical techniques used to investigate photosynthesis: the use of sodium
hydroxide to absorb carbon dioxide; how to test a leaf for the presence of starch;
how oxygen and carbon dioxide sensors and data loggers could be used
(d) the uses made by plant cells of the glucose produced in photosynthesis:
respired to release energy; converted to starch for storage; used to make
cellulose, proteins and oils
(e) the structure of a leaf and be able to label the following structures: cuticle,
epidermis, stomata, palisade layer, spongy layer, xylem and phloem; the structure
of stomata to include guard cells and stoma; the fact that stomata can open and
close to regulate transpiration and allow gas exchange
(f) the importance of water to plants: use in photosynthesis, transport of minerals
and support
(g) the significance of root hairs in increasing the area for absorption in a root; the
role of osmosis in the uptake and movement of water through a plant;
(h) the uptake of mineral salts by root hairs by active transport
(i) the role of xylem in transport of water within plants; the role of transpiration in
the movement of water through a plant
(j) the effect of different environmental conditions on the rate of transpiration from
a plant / plant cutting
(k) the role of phloem in carrying sucrose from the photosynthetic areas to other
parts of the plant for use in respiration or converted into starch for storage
(l) the effects of plant nutrient deficiencies on plant growth: lack of nitrates results
in poor growth; deficiency of potassium results in yellowing of the leaf; deficiency
of phosphate results in poor root growth; the use of NPK fertilisers
SPECIFIED PRACTICAL WORK
∙ Investigation of the factors affecting photosynthesis
∙ Investigation into factors affecting transpiration
a – everyone
a – higher
a – triple
2
, Lesson 1 – The Leaf
SEREN: Evaluate the structure of a leaf and its adaptations
RHAI: Give the word equation for photosynthesis
MWYAFRIF: State the reactants and products of photosynthesis
PAWB: Describe the process of photosynthesis
Starter –
• What factors do plants need to be able to survive?
• What do they produce?
• How do plants obtain energy?
Definition: Autotrophic
Word Equation:
3
