TREE PHYSIOLOGY
PHOTOSYNTHESIS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Test for the fixation of CO 2 in the dark
|
|
|
Test for the presence of sugar
|
|
|
Test for the presence of oxygen in light
|
|
|
Test for thylakoid presence in the chloroplasts
|
Detailed explanation-1: -How could the scientist determine if PSII is missing from the plant’s chloroplasts? Test for the presence of oxygen in the light. Oxygen is released in PS II, so if PS II is missing from the chloroplasts, no oxygen would be found.
Detailed explanation-2: -The best way to detect the lack of photosystem II in these organisms would be. to determine if they have thylakoids in the chloroplasts.
Detailed explanation-3: -If a mutation completely eliminates photosystem II in a plant, electrons are not formed. These electrons would not be transferred any further to produce ATP or NADPH. In organisms where photosystem II is not present, another photosystem that operates at a different wavelength is present.
Detailed explanation-4: -However, Photosystem II is absent in chloroplasts found in bundle sheath cells.
Detailed explanation-5: -The agranal bundle sheath chloroplasts are deficient in photosystem II; they lack cytochrome b-559 and the fluorescence bands associated with photosystem II. All the chloroplasts exhibit photosystem I activity.