If a cell, tissue, or organ is specialized, it means :

a) - it has a specific human function

B) it can never be replaced

C) it can change its function at any time.

2) In which habitat would you find an organism that has and uses chloroplasts ?

A) inside a volcano

b) at the bottom of an ocean

C) in a cool , sunny field

D) deep within the soil.

1 is B

2 is A

Explanation:

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

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.