LESSON 2: ELEMENTS, ORGANISMS, ECOSYSTEMS

Question 1

Organisms compete for resources for their survival

Answer 1

competition

Question 2

competition within species

Answer 2

Intraspecific

Question 3

species compete with other species

Answer 3

Interspecific

Question 4

Organism feeds directly on another living organism

Answer 4

predation

Question 5

Predator and prey relationship

Answer 5

predation

Question 6

intimate relations among species

Answer 6

Symbiosis

Question 7

Both organisms benefit from each other

Answer 7

Mutualism

Question 8

One organism benefits while the other neither benefits nor is harmed

Answer 8

Commensalism

Question 8

Parasite and host relationship

Answer 8

Parasitism

Question 9

One organism benefits from another organism, inflicting harm or damage

Answer 9

Parasitism

Question 10

final recycling of organic materials

Answer 10

Decomposers

Question 11

eat litter, debris, dung

Answer 11

Detritivores

Question 12

eat dead carcasses of larger animals

Answer 12

Scavengers

Question 13

eat both plant and animals

Answer 13

omnivores

Question 14

flesh eaters

Answer 14

carnivores

Question 15

plant eaters

Answer 15

herbivores

Question 16

eat producers and/or consumers

Answer 16

consumers

Question 17

transforms light energy to chemical energy (photosynthesis)

Answer 17

producers

Question 18

complex of interconnected food chains in an ecosystem

Answer 18

food web

Question 19

linear sequence of organisms through which nutrients and energy pass as one organism eats another

Answer 19

food chain

Question 20

energy is “trapped” into the system

Answer 20

photosynthesis

Question 21

ultimate source of energy

Answer 21

sun

Question 22

consumers who depend on other sources for their food

Answer 22

heterotrophs

Question 23

producers who prepare their own food

Answer 23

autotrophs

Question 24

worldwide sum of all ecosystems

Answer 24

biosphere

Question 25

composed of a biological community and its physical environment

Answer 25

ecosystems

Question 26

populations of different species in a particular area

Answer 26

community

Question 27

consists of all the members of a species living in a given area at the same time

Answer 27

population

Question 28

refers to all organisms of the same kind that are genetically similar enough to breed in nature and produce live, fertile offspring

Answer 28

species

Question 29

individual entity that embodies the properties of life

Answer 29

organism

Question 30

group of organs that work together to perform a certain function in an organism's body

Answer 30

organ system

Question 31

a group of tissues in a living organism that have been adapted to perform a specific function

Answer 31

organ

Question 32

a group of closely associated, similar cells that work together to carry out specific functions

Answer 32

tissue

Question 33

basic unit of life

Answer 33

cell

Question 34

anything that has mass and occupies space

Answer 34

matter