(2015 session of Chongqing November research) Aloe vera is easy to plant, for both flowers and leaves ornamental plants, its CO2 utilization is more special; at night the stomata (is)

(1) Aloe vera can not carry out complete photosynthesis at night, because although it can absorb carbon dioxide, but there is no ATP NADPH provided by the light reaction; during the day, Aloe vera photosynthesis CO2 source is the decomposition of malic acid release of CO2 and its own respiration release of carbon dioxide.

(2) Because the stomata of Aloe vera are closed during the day, carbon dioxide can not enter the leaf pulp cells, the content of three-carbon compounds in the cells of Aloe vera is not affected by the ambient concentration of carbon dioxide, basically unchanged.

(3) From the question, the stomata of Aloe vera are open at night and closed during the day, it is presumed that its living environment is probably characterized by high temperature and dryness.

(4) the study of chloroplast pigments in Aloe vera cells can be separated by paper chromatography, the chemical elements that make up chlorophyll are C, H, O, N, Mg. Chloroplast pigments with the greatest solubility is carotene, the least solubility is chlorophyll b. Therefore, the two pigments with the greatest difference in solubility are carotene and chlorophyll b. If you want to observe the morphology and distribution of mitochondria in their cells, you can select young roots with kenaf and use it as an alternative. If you want to observe the morphology and distribution of mitochondria in their cells, you can choose young roots and stain them with Kenneth Green and make a slide, and then observe them under a high power microscope.

The answers are:

(1) Cannot ? No light reaction at night to produce ATP and [H] respiration and decomposition of malic acid

(2) unchanged

(3) drying at high temperature

(4) C, H, O, N, Mg ? carotene and chlorophyllb young roots ? Kenna green