The correct answer would be phyla; divisions. ... For example, Acanthocephala, Annelida, Arthropoda, Chordata, et cetera are some phyla used in animal classification. bryophyte, Charophyta, Chlorophyta et cetera are some divisions used in plant classification
The lymphatic system destroy harmful substances 'By producing antibodies'.
The lymphocytes contained in lymphatic organs are produced with other defence cells by the bone marrow. They are then dispersed to eliminate pathogens.