Answer:
Maize is a monocot.
It has seed with one cotyledon.
Adventitious root system present.
No cambium present.
While, mango is dicot.
Seed with two cotyledon.
Tap root system.
Cambium present.
 
        
                    
             
        
        
        
Answer:
Calculate the percentage of time spent in each phase by counting the total number of cells in each phase (total in interphase, in prophase, etc.) ... Multiply the percentage of time in each phase by the total time of the cell cycle (720 minutes) and this gives you an estimate of the time spent in each phase.
Explanation:
 
        
             
        
        
        
Answer:
To describe a new specie, it has to be carefully examined in order to determinate that it doesn´t belong to an another specie already described. 
Once it has been determinate the novelty of the specie, the researchers write a formal description of it, takes pictures and name it with the new scientific name. Then, the researchers refer it to a scientific magazine.   The editor of the publication will comunicate the new discovery to an experts in that gender.   If the experts agreed, and the publication accept the study, the specimen converts to a new specie.   The process is long and could take years betwen the inicial discovery and the formal acceptation of the new specie
Explanation:
 
        
             
        
        
        
The answer would be B. chromosome 21