Biology Flashcards Preview

Review Classes - Science > Biology > Flashcards

Flashcards in Biology Deck (98)
Loading flashcards...
1

Mikros and Skopeo (Latin)

"to looks at"

2

discovered that compound lenses can magnify objects greatly

Zacharias and Hans Jensen (1590)

3

made many biological discoveries using his microscope
first to see yeast cells and microorganisms in a drop of water

Anton van Leeuwenhoek 1700's

4

coined the term cells after observing a thin slice of cork under his microscop

Robert Hooke 1665

5

Provides support and carries the weight of the microscope

Base

6

Connects the body tube to the base of the microscope

Arm

7

connects the eyepiece to the objective lenses

Body Tube

8

Brings the specimen into general focus

coarse adjustment knob

9

fine tunes the focus and increases details of speciman

fine adjustment knob

10

flat platform where the specimen is placed

stage

11

metal clips that hold the slide in place

stage clips

12

holds the different objective lenses

revolving eyepiece

13

source of illumination

lamp

14

adjusts the amount of light that passes through the specimen

Diaphragm

15

Reflect and refract light magnify the specimen

Objective Lens

16

Fathers and focuses light from the light to the specimen

condenser

17

the lens where in the viewer looks through to see the speciment

Eyepiece or ocular

18

observed in dicots, has one prominent primary root

taproot system

19

observed in monocots, numerous roots of the same size

Fibrous Root System

20

moves water and dissolved minerals from roots to leaves

xylem

21

moves food and nutrients from leavers to roots

phloem

22

stems growing above the ground

epiterranean

23

stems growing below the group

subterranean

24

stems growing horizontally

runners or stolons

25

located below the upper epidermis

palisade mesophyll (monocots)

26

located above the lower epidermis

spongy mesophyll (dicots)

27

normally abundant in the lower epidermis
where gas exchange happens

stomata

28

ripened ovaries

fruit

29

part of the fruit that encloses the seed

Pericarp

30

three layers of pericarp

Exocarp
Mesocarp
Endocarp