Photosynthesis occurs in the chloroplasts of the leaf

palisade meosphyll is the greenest tissue in the leaf, since these cells contain the most chloroplasts
and carry out most of the photosynthesis.

How does this investigation demonstrate that plants give off oxygen during  photosynthesis?

I believe this will happen because when the light source is nearer to the plant more of the plants surface area is coming in to contact with the light from the desk lamp therefore more photosynthesis will occur which will mean more oxygen will be produced which will create more bubbles....

Photosynthesis BIO 311C Flashcards | Quizlet

Photosynthesis mainly takes place in the palisade mesophyll cell in the leaves of plants.

Carotenoids remain and these are partly responsible
for the colours of autumn leaf fall.

Accessory pigments broaden the range of wavelengths that can be used for photosynthesis.

The photosynthetic efficiency is the fraction of light ..

In the thylakoid membranes of the chloroplasts in photosynthetic cells.

There are two different photosystems that work together, photosystem I (PS I) and photosystem II
(PS II).

Edxcel Biology Revision for ATP | Photosynthesis | …

* Light intensity - as if change it will effect the amount of light
being absorbed by the plant and therefore the amount of
photosynthesis the plant it able to do.

Edxcel Biology Revision for ATP ..

* The elodea - must be keep the same as every different plant of
elodea had different amounts of chlorophyll and surface area so
each plant will have a different rate of photosynthesis depending
on this.

to show the effect of respiration relative to photosynthesis n

In fact, this process results in no net gain for the plant as no sugar can be produced and it only decrease photosynthetic output as it uses the organic resources(50% of the carbon) of the Calvin cycle at the plants expense.

The leaf can only respire due ..

To provide a guideline for CO2 addition, a theoretical calculation is given below for a glass house of 100 m2, with a growing crop, on a day with average light intensity. In this calculation, a level of 1,000 ppm CO2 will be supplemented to maintain 1,300 ppm during the day. Normally CO2 supplementation is not required at night as no photosynthesis occurs. Actually, the CO2 concentration will tend to build up naturally as a result of plant respiration. Therefore, it is not uncommon to find elevated levels (500–600 ppm) early in the morning. Growers using high-pressure sodium lighting during the night should maintain at least 400 ppm of CO2.