Chapter 1.2

Question 1

Biomass

Answer 1

the dry mass of all the living organisms occupying a habitat

Question 2

Ecology

Answer 2

the study of the interactions of living organisms with one another and with their physical environment

Question 3

population

Answer 3

a group of organisms, all of the same species, which interbreed and live in the same area at the same time

Question 4

biological community

Answer 4

interacting populations living in a certain area at a certain time

Question 5

symbiosis

Answer 5

a long lasting, ecological relatinaip that benefits at least one organism of two different species that live in close contact

Question 6

mutualism

Answer 6

a symbiotic relationship in which the organisms of both species benefitc

Question 7

commensalism

Answer 7

a form of symbiosis in which one organism benefits, and the other organism is neither helped nor harmed

Question 8

parasitism

Answer 8

a symbiotic relationship in which one organism called the parasite, derives benefit at the expense of another organism, called the host

Question 9

predation

Answer 9

an interaction where one organism, the predator, kills and eats another organism, called the prey

Question 10

competition

Answer 10

an interaction in which two or more organisms compete for the same limited resource