Zoology Test 1a Flashcards Preview

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Flashcards in Zoology Test 1a Deck (40):
1

eukaryotes

- many cells
- nucleus
- complex
- higher metabolism

2

prokaryotes

single celled

3

animal

- eukaryote
- no cell walls
- multicellular
- motile during part or all of life
- heterotrophs

4

genus

starts with capital letters

5

species

starts with lowercase letter

6

animal characteristics

- symmetry
- organizational complexity
- types of tissues present
- developmental pattern
- segmentation

7

increasing complexity means what...?

reflects evolutionary development through animal history/evolution

8

types of symmetry

- asymmetrical
- radial
- bilateral

9

cross section

across something, like worm

10

longitudinal section

top to bottom of something

11

sagittal section

right down the middle of bilateral animal

12

Protozoan

- tiny animal-like organisms
- different shapes and structures
- located in water
- eukaryotes
- lack cell wall
- have at least one motile stage in life cycle
- heterotrophic
- holozoic
- not monophyletic
- unicellular
- contain organelles
- photosynthetic

13

holozoic

ingest their food

14

saprozoic

absorb it

15

monophyletic

being in the same phylum

16

sequence of taxonomy

kingdom
phylum
class
order
family
genus
species

17

heterotroph

ingest other organisms for food

18

volvox protists

single cells can carry on life independently, clearly unicellular, clump together

19

types of asexual reproduction

- binary fission
- multiple fission or schizogany

20

binary fission

from of mitotic division, nuclei divide

21

multiple fission

also called schizogany, repeated nuclear divisions followed by simultaneous cytokinesis

22

types of sexual reproduction

- syngamy
- conjugation

23

syngamy

fertilization of one haploid gamete by another

24

conjugation

mutual exchange of genetic information, make nuclei and exchange info

25

types of protozoan movement

- cilia
- flagella
- pseudopodia

26

cilia

tend to move water past the organism

27

flagella

move organisms in the water (can have more than 1)

28

pseudopodia

- move cytoplasm in direction they want to move, and pull it in from behind
- pseudo meaning false
- pod meaning foot

29

protozoan excretion

-waste composed of nitrogenous material
- simple diffusion from high to low concentration
- end product id ammonia (NH3-)

30

osmosis

water moves form region of high water concentration to a region that contains low water concentration, moves towards solution with high solute concentration

31

osmoregulation

regulation of H2O

32

what is protozoans mechanism for osmoregulation?

contractile vacuoles

33

contractile vacuoles

pumps in H2 ions, water moves in to fill space, squeezes and pumps water out

34

what are the protozoan groups?

- flagellates
- ciliates
- amoebas
- apicomplexans

35

Euglena

- type of flagellate
- has pellicle
- a flagella
- has chlorophyll....therefore photosynthetic
- contains stigma that detects light
- autotrophic

36

trypanosoma

- type of flagellate
- carreid by the tsetse fly
sickle-shape cell with undulating membrane and flagellum
- half of people who contract, die; 7-10000 cases
- travels in blood
- effects the CNS

37

volvox

- type of flagellate
- multicellular
- single colony can contain 50000 cells
- contains flagella, chloroplast and stigma
- asexual reproduction in daughter colonies (spring and summer)
- sexual reproduction in zygotes
- inversion

38

inversion

daughter colonies turn inside-out during development so flagella are on outside

39

microgametes

male

40

macrogametes

female