The answer is A. Apicomplexa. 
        
             
        
        
        
Answer:
Ans - 1 Photosynthesis begins with the light reactions. It is during these reactions that the energy from sunlight is absorbed by the pigment chlorophyll in the thylakoid membranes of the chloroplast.
Ans-2 The dark reactions of photosynthesis occur in the stroma of the chloroplast where they utilize the products of the light reaction. In the dark reaction, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose.
Ans-3 The main factors affecting rate of photosynthesis are light intensity, carbon dioxide concentration and temperature.
 
        
             
        
        
        
Answer: 
Human glucocebrosidase is used as a therapeutic drug which is used to treat Gaucher's disease.
The farming of this substances in crops is very helpful for the population. The genetic engineering to insert genes in plants would result in GMOs.
It is more beneficial to use plants for this process as compared to that of animals because it is easily available and easily extracted.
It is more economical and easily accessible by people. It would not harm animals by incorporating the gene in them in laboratory conditions.