biodiversity and classification

Question 1

morphological species

Answer 1

speciation happens due to anatomical similarities

Question 2

ecological species

Answer 2

species is a group of organisms that occupy the same ecological niches

Question 3

ecosystem

Answer 3

relatively self-contained, interacting community of organisms, and the environment in which they live and with which they interact

Question 4

habitat

Answer 4

place where a species lives within an ecosystem

Question 5

niche

Answer 5

the role of an organism in an ecosystem

Question 6

biodiversity

Answer 6

degree of variations of life forms in an ecosystem

Question 7

biodiversity considerations

Answer 7

• variation in habitat
• number of different species in the environment and their relative abundance
• genetic variation within each species

Question 8

species richness

Answer 8

number of species in a community

Question 9

species relation

Answer 9

ecosystems with high species diversity tend to be more stable than one with limited diversity, able to resist changes

Question 10

genetic diversity

Answer 10

diversity of allele within the genes in a genome of a single species

Question 11

genetic diversity relation

Answer 11

population with high genetic diversity tend to be healthier than highly inbred population with low genetic diversity

Question 12

domains

Answer 12

1. Archaea
2. Bacteria
3. Eukarya

Question 13

domain eukarya

Answer 13

1. Kingdom Protoctista
2. Kingdom Fungi
3. Kingdom Plantae
4. Kingdom Animalia

Question 14

features of domain bacteria

Answer 14

• prokaryotes
• no membrane-bound organelles
• ribosomes (70s) smaller than eukaryotic cells
• cell wall present (peptidoglycans)
• cells divide by binary fission
• exist as single cells/small group of cells
• DNA exists as circular chromosome and does not has histone proteins associated with it

Question 15

features of domain archae

Answer 15

• no membrane-bound organelles
• DNA exists as circular chromosomes and has histone proteins associated with it
• plasmids often present
• cell wall present (no peptidoglycans)
• cell divides by binary fission
• exists as single cells/small group of cells

Question 16

features of Kingdom Protoctista

Answer 16

• eukaryotic cells
• most exist as single cells
• some cell wall
• some heterotrophs, some autotrophs

Question 17

features of Kingdom Fungi

Answer 17

• cell wall made of chitinous
• chloroplast absent
• heterotrophic
• unicellular (yeast) to multicellular (mushrooms)

Question 18

features of Kingdom Plantae

Answer 18

• multicellular
• cellulosic cell wall
• autotrophic

Question 19

features of Kingdom Animalia

Answer 19

• multicellular
• no cell wall
• heterotrophic

Question 20

species frequency

Answer 20

chance of a particular species being
found within any one
quadrat

Question 21

species density

Answer 21

measure of how many
individuals there are per
unit area