THE COMPOUND MICROSCOPE

Question 1

indispensable tool

enables us to see plant structures too small to be seen by the unaided eye

Answer 1

microscope

Question 2

three elements are needed to form an image

Answer 2

a source of illumination

the specimen to be observed

a system of lenses to focus the illumination on the specimen and to form the image

Question 3

microscope that uses natural or artificial light and series of lenses

Answer 3

compound light microscope

Question 4

series of lenses in compound light microscope (4)

Answer 4

condenser
objectives
intermediate lenses
ocular lens

Question 5

magnifies and projects virtual image into the body tube

Answer 5

objective lens

Question 6

while the _____ magnifies that image further and projects the enlarged image into the eye

Answer 6

ocular lens

Question 7

three basic parts of the microscope

Answer 7

(a) mechanical parts
(b) magnifying parts
(c) illuminating parts

Question 8

those parts concerned with the support and adjustment of the optical parts

Answer 8

Mechanical Parts

Question 9

Mechanical Parts (11)

Answer 9

1. Base
2. Pillar
3. Handle or Arm
4. Inclination Screw
5. Body Tube
6. Ocular Tube
7. Revolving Nosepiece
8. Dust Shield
9. Adjustment Screws
   a. Coarse Adjustment Screw
   b. Fine Adjustment Screw
10. Stage
11. Mirror Rack

Question 10

those parts concerned with image enlargement of the specimen

Answer 10

Magnifying Parts

Question 11

Magnifying Parts (2)

Answer 11

1. Ocular or Eyepiece
2. Objectives
   a. Scanner
   b.Low Power Objective (LPO)
   c. High Power Objective (HPO)
   d. Oil Immersion Objective

Question 12

those parts concerned with light provision and regulation to the specimen

Answer 12

Illuminating Parts

Question 13

those parts concerned with light provision and regulation to the specimen

Answer 13

Illuminating Parts

Question 14

Illuminating Parts (3)

Answer 14

1. Mirror
2. Diaphragm
3. Condenser

Question 15

stand that supports the microscope.

Answer 15

Base

Question 16

a short piece of metal that attaches to one end of the base; also supports the microscope.

Answer 16

Pillar

Question 17

curved metallic part arising from the pillar used for holding the microscope

Answer 17

arm or handle

Question 18

found at the junction of the pillar and the handle used for tilting the microscope

Answer 18

Inclination Screw

Question 19

cylindrical structure vertically arising from the handle; holds the dust shield and nosepiece

Answer 19

Body Tube

Question 20

upper smaller end of the body tube bearing the eyepiece or ocular lens.

Answer 20

Ocular Tube or Draw Tube

Question 21

circular structure where the objectives are attached that permits the shifting of objectives

Answer 21

Revolving Nosepiece

Question 22

circular structure above the nosepiece used to protect the lenses of the objectives

Answer 22

Dust Shield

Question 23

two pairs of wheels attached to either side of the body tube.

Answer 23

Adjustment Screws

Question 24

used to adjust the low power objective in focusing

Answer 24

Coarse Adjustment Screw

Question 25

used for delicate focusing in connection with the high power and oil immersion objectives

Answer 25

Fine Adjustment Screw

Question 26

A square or round platform with an opening at the center where the slide is placed

Answer 26

Stage

Question 27

A square or round platform with an opening at the center where the slide is placed

Answer 27

Mirror Rack

Question 28

found on the draw tube through which the operator peeps during actual focusing; usually carries magnification of 10X

Answer 28

Ocular or Eyepiece

Question 29

A thin, black line that appears to cut halfway across the field of view which the student or instructor can use to point out regions of the specimen under observation

Answer 29

pointer

Question 30

tube-like structures attached to the revolving nosepiece

Answer 30

objective

Question 31

a. Scanner b.Low Power Objective (LPO) c. High Power Objective (HPO) d. Oil Immersion Objective

Answer 31

carries a magnification of 4-5X. carries a magnification of 10-12X. carries a magnification of 40-60X. carries a magnification of 97-100x; requires the use of cedar oil.

Question 32

found below the stage near the base used to collect and direct light to the specimen.

Answer 32

Mirror

Question 33

found below the stage used to regulate the entry of light onto the specimen. There are different types of diaphragm: iris, plate or fan

Answer 33

Diaphragm

Question 34

lens found immediately beneath the hole of the stage used to concentrate light rays on the specimen

Answer 34

Condenser