Select the correct answer. Which characteristic of life distinguishes a fire and a flowering plant? A. use of energy B. movement C. growth D. defined boundary

A

Explanation: the use of energy is a characteristic that distinguishes a fire from a flowering plant.

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.

correct answer is a. and d.