Chap 2

Question 1

What is a food chain?

Answer 1

Food Chain is a chain of organisms used to show the feeding relationship between organisms.

Question 2

What is the name of the process when ground water gets released into the air?

Answer 2

Transpiration

Question 3

Plants and animals carry out _________?

Answer 3

Respiration

Question 4

Decay of dead plants and animals by bacteria and fungi in the soil uses ________ and releases ________

Answer 4

oxygen, carbon dioxide

Question 5

Green plants maintain the content of carbon dioxide and oxygen in the air through?

Answer 5

photosynthesis

Question 6

Meaning of Population

Answer 6

a group of organisms of the same species that live in the same habitat

Question 7

Meaning of Species

Answer 7

a group of organisms that have common characteristics n can reproduce to breed offsprings

Question 8

Meaning of Community

Answer 8

a few populations of different organisms that live together in one habitat

Question 9

Meaning of Ecosystem

Answer 9

a few communities that live together in one habitat. Including non living components such as water, air, soil

Question 10

Interaction between organisms comprise of _______, ________ and ________

Answer 10

Symbiosis , prey predator, competition

Question 11

Symbiosis include:

Answer 11

mutualism, commensalism, parasitism

Question 12

What is Mutualism?

Answer 12

an interaction that benefits both organisms

Question 13

What is Commenalism?

Answer 13

an interaction which only benefits one organism without harming or benefiting the other.

Question 14

What is Parasitism

Answer 14

an interaction that benefits one organism only and harms the other

Question 15

What is biological control?

Answer 15

a method that uses organisms that r natural predators, parasites or pathogens to reduce the number of pests in the area.

Question 16

Name 4 factors that influence population size in ecosystem

Answer 16

disease, presence of predators, source of food, change of weather