Biology F5 C2
State one organelle that is found abundantly in palisade mesophyll cell.
Chloroplast
State importance of chloroplast to green plants.
-Contain___
-To absorb___
-To carry out___
-Converts light energy into___energy
chlorophyll, sunlight, photosynthesis, chemical
Most leaves seen as green in colour. Explain.
-Leaf contains___
-___and___light will be absorbed by chlorophyll
-___light is reflected
-The eye can only see the green colour on the leaves
chrolophyll, blue, red, green
State the importance of stroma.
-Site for___reaction
-___production
-Reduction of carbon dioxide
light-independent, glucose
Explain the effect of optimum surrounding temperature on the rate of photosynthesis in plant.
-Rate of photosynthesis___
-Increase the activity of ___
-___of water
-Reduction of carbon dioxide___
increases, enzyme, photolysis, increases
The leaves colour of maple tree during summer is green and during autumn is yellow. State why there is a change in colour of the leaf during autumn.
-Light intensity during autumn is___ than during summer.
-Plant stop making___
-Causes chlorophyll to___.
lower, chlorophyll, breakdown
Describe adapatation of chloroplast to carry out its functions efficiently.
-Has many___
-To produce lots of___
-To absorb more__energy
-Increase rate of ___reaction
-Has___
-To produce lots of___
-To reduce more___
-Increase the rate of___reaction
thylakoid, chlorophyll, light, light-dependant, stroma, glucose, carbon dioxide, light-independant
Explain the adaptation of spongy mesophyll tissue for photosynthesis process.
-Has a lot of ____
-To allow exchange of gases occurs___
air space, efficiently
Plant R is taller & plant S is shorter. Describe the relationship between height of plant R & S with the rate of photosynthsis.
-The light intensity of plant R is the ___.
-Causing the plant to absorb more___.
-To carry out___at highest rate.
-The light intensity of plant S is the__.
-Causing the plant to absorb less carbon dioxide.
-To carry out photosynthesis at lowest rate.
highest, carbon dioxide, photosynthesis, lowest
State the stage of photosynthesis that occur in the thylakoid of the chloroplast.
Light-dependent reaction
Explain how the photosynthesis process causes the condition of stoma.
-Photosynthesis produces___
-The concentration of glucose in the guard cell is___
-The water potential in the guard cell____
-The water molecules from the____cells diffuse into the guard cell by osmosis
-The guard cell become___& curves____
glucose, high, decreases, epidermal, turgid, outwards
Explain why leaves are arranged in a certain way.
-Leaf___arrangement
-So that the leaf___does not overlap
-Increases the___of the leave
-Enable leaves to receive optimum___
-To carry out___
mosaic, lamina, surface area, light, photosynthesis
A plant was placed in a very hot room for 12 hours. There was a bright light in the room and the plant was not given any water the 12 hours period. Explain the stomatal change of the plant.
-The opening of the stomatal opening is____
-To reduce___
-By____
decreasing, water loss, transpiration
Mr.X found that all the plants wilted and died caused by the increase in temperature due to "El Nino". Suggest ways to overcome the problem.
-Plant it in____
-Water the plant regularly
greenhouse
Explain the difference in the mass of glucose produced in the palisade mesophyll and in spongy mesophyll.
-Mass of glucose produces in palisade mesophyll is___than spongy mesophyll.
-Palisade mesophyll have more___ than spongy mesophyll.
-Rate of photosynthesis in palisade mesophyll is ___.
higher, chloroplast, higher
Explain the adaptations of palisade mesophyll cells for photosynthesis.
-Arranged___and closely packed
-Dense with___
-To maximise sunlight____
vertically, chloroplasts, absorption
A farmer finds his tomato plants produce fewer fruits when grown in a shaded area away from sunlight. Explain.
-The intensity of light received is ___.
-Rate of photosynthesis ___
-Less ___is produced.
less, decreases, glucose
Explain what happens to the rate of glucose production when the light intensity continues to increase beyond the compensation point.
-The rate of glucose production ___ and exceeds the rate of glucose usage.
-Rate of photosynthesis is__than the rate of respiration.
increases, higher
Explain the importance of stomatal closure during extreme hot day.
-Prevent excessive____
-Maintain___
water loss, turgidity
Explain the reaction occur in thylakoid.
-___reaction
-Occurs in the presence of___
-Produce____while reaction occur
-Reaction substance :____
-Reaction product : ____
-Process involved :____of water
light-dependent, light, ATP and hydrogen atom, water, oxygen and water, photolysis
Explain the reaction occur in stroma.
-_____reaction
-Can occur in a ____or dark condition
-____are used while reaction
-Reaction substance :___
-Reaction product : ___
-____of carbon dioxide with___carbon organic compound
light-independent, bright, ATP amd hydrogen atom, carbon dioxide, glucose, fixation, 5
Predict the effect on the plant if the rate of photosynthesisn and the rate of respiration remain at compensation point.
-Plant___ will not occur
-because the product of photosynthesis is___for the plant respiration.
-Glucose production rate is___
-No production of__/__/___
-No excess___ from photosynthesis is released into the atmosphere to support other organisms.
growth, fully used, less, flowers, fruits, seeds, oxygen