Lab 3 Flashcards Preview

BIO 121 Lab > Lab 3 > Flashcards

Flashcards in Lab 3 Deck (22):
1

Domain

Kingdoms with important similarities. There are three domains: archaea, bacteria, and eukarya

2

Supergroup

A new hierarchical taxon, groups above the kingdom level and below the domain level

3

Clade

A group of species that includes an ancestral species and all its descendants

4

Filaments

Long strings of cells

5

Heterocyst

Cells that are larger and appear to have thicker walls than the rest of the cells.

6

Nitrogen fixation

Can take atmospheric nitrogen and convert it directly into usable compounds

7

Heterotrophic

The organisms included in this kingdom lack chlorophyll (feed on other plants and animals to obtain chemical energy)

8

Hyphae

Long, slender tubes or filaments

9

Saprophytic

Fungi that is unable to make their own food (feed on dead or dying organisms and digest food externally)

10

Parasitic

Live in or on living organisms and drive nutrients from them

11

Conjugation

Transfer of DNA

12

Zygosporangium

A multinucleate zygote that has a thick, spiny wall

13

Asci

Members of the phylum ascomycetes produce haploid spores by meiosis in tiny sacs

14

Ascospores

Long, slender asci

15

Basidia

Tiny club - shaped structures

16

Basidiospores

Phylum basidiomycetes produces these spores externally, following sexual reproduction

17

Stalk

Supports the mushroom

18

Pileus or cap

Expanded top

19

Gills

Radiate outward from the center of the cap on its undersurface

20

Cytoplasmic streaming

Movement within the cell

21

Air bladders

Small, spherical, may be observed on the branches below the tips

22

Saprophyte

Zygote grows by mitosis into a green, leafy, diploid that is two cells thick