The fins on sharks and fish that help them to glide up and down are called
a) pectoral and pelvic fins.
C) pectoral and dorsal fins .
b) caudal and dorsal fins.
d) pelvic and caudal fins.

answer:

pelvic and caudal fins

Explanation:

the aswer is letter c

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.