Biological scientists use a variety of methods to gather evidence, or data. if a biologist makes a diorama of a plant cell, what type of investigation did the biologist perform? a. laboratory experiment b. observational field study c. collection of specimens d. model-building

The biologist is performing model-building type of investigation.

Explanation:

In the given scenario it is mentioned that the biologist is making a diorama of a plant cell. The diorama refers to the 3-D model of the specimen or object of the interest. The diorama of the specimen helps in gaining accurate knowledge of the concept as the subject is seen visually.

It also rules out much difference which arises about a concept through theoretical knowledge. Diorama is stable yet highly reliable evidence and it can also be altered according to the research and analysis.

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.