The correct option is PHYLUM.
Scientists arranged living organisms into groups on the basis of the traits which they share with one another. The lowest rank in the groups is the specie while the kingdom is the highest rank. The ranks are arranged as follow:
Specie < Genus < Family < Order < Class < phylum < Kingdom.
Thus, the phylum is a combination of many classes.
Answer:
E) spores
Explanation:
The plant kingdom is divided into the five phyla which can be distinguished on the basis of the defining features shown by the plants.
In the given question, the features like the cell walls made of cellulose, chlorophylls a and b and the dominant sporophyte show that the plant belongs to a higher group. The plants in which the sporophyte is dominant are known may belong to the pteridophyte, angiosperms or angiosperms.
The spores are produced by these sporophytic structures of higher plants that do not form in the large size gametophyte but reduced gametophyte or microscopic gametophyte, therefore, is least useful to the classification.
Thus, E) spores is the correct answer.
