How manty plants among China rose, Ocimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (Olender) have opposite phyllotaxy

How many plants among China rose, Ocimum, sunflower, mustard, Alstonia, Guava, Calotropis and Nerium (Oleander) have opposite phyllotaxy?

How many plants among China rose, Icimum, sunflower, mustard, Alstonia, guava, Calotropis and Nerium (Oleander) have opposite phyllotaxy?

How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram, and trunip have stamens of different lengths in their flowers?

Among china rose, mustard, brinjal, patato, guava, cucumber, onion and tulip, how many plants have superior ovary?

How many plants contain alternate phyllotaxy from given examples - Alstonia, China rose, Guava , Mustard, Calotropis and sunflower