B16.2 Organisms in their environment

Question 1

What are some examples of abiotic factors in a community?

Answer 1

Light intensity
Temperature
Moisture levels
Soil pH
Wind intensity
Availability of oxygen
Availability of carbon dixoide

Question 2

How does light intensity affect the environment?

Answer 2

Light limits photosynthesis - affects the distribution of plants and animals - some plants are adapted by having more chlorophyll or bigger leaves

Question 3

How does temperature affect the environment?

Answer 3

It is a limiting factor for photosynthesis and therefore growth on plants. In low temperatures plants are small - affects number or herbivores in the area that can survive

Question 4

How do moisture levels affect the environment?

Answer 4

If there is no water there will be little biological life

Question 5

How does pH affect the environment?

Answer 5

Less nitrates and more acidic solution can kill plants

Question 6

What are some examples of biotic factors affecting communities?

Answer 6

Availability of food
New pathogens or parasites
New predators
Interspecific competition - competition with species

Question 7

How can carnivorous plants survive in areas with very low levels?

Answer 7

Capture and digest animals and use the nitrate ions produced as animal proteins broken down