(2) In order to improve the efficiency of photosynthesis, people often adopt intercropping, interplanting and reasonable close planting, which is the chloroplast of plant photosynthesis. Therefore, intercropping, interplanting and reasonable close planting are to improve the efficiency of photosynthesis in Figure A, which occurs in the chloroplast of Figure B cells [4].
(3) Process B refers to transpiration, and its intensity is affected by environmental factors such as temperature and humidity (write at least two). Generally speaking, the higher the temperature, the stronger the transpiration and the weaker the humidity.
(4) At 0-6 o'clock, there is no light at night, and plants only breathe and release carbon dioxide continuously, so the concentration of carbon dioxide gradually increases, while at 6- 18, it is daytime, and plants can breathe and release carbon dioxide continuously through photosynthesis, but the intensity of photosynthesis is greater than respiration, so the concentration of carbon dioxide gradually decreases from 18.
The comparison shows that the curve of C diagram can correctly represent the determination results.
So, the answer is: (1) a; Breathe; 5; mitochondria
(2) photosynthesis; 4; chloroplast
(3) Temperature and humidity.
(4)C。