ecosystems

Question 1

Biotic factors

Answer 1

Living organisms, and ecosystems

Question 2

Abiotic factors

Answer 2

water, weather, gas

Question 3

Define interspecific competition

Answer 3

Remember: inter-school sports (different schools)
Inter: Competition between two different species ex: sharks, dolphins, and seabirds eat the same type of fish.

Question 4

Intra specific competition

Answer 4

Intra: Competition between the same species ex: two birds compete for mating

Question 5

What is an ecosystem?

Answer 5

“an ecosystem is the biological community of interacting organisms and their physical environment

Question 6

Define community in ecosystems

Answer 6

You are described as part of a community when the population you are part of is living with many different populations of other species.​

Question 7

Define Population in ecosystems

Answer 7

You belong to a population when you are with others of your species in the same area at the same time.​

Question 8

Order in ecology

Answer 8

Ecosystem>Community>Population>Organism

Question 9

Word equation for photosynthesis

Answer 9

Light energy >

Carbon dioxide+water chlorophyll glucose+oxygen+water

Question 10

describe predator-prey relationship

Answer 10

A predator is an animal that hunts, kills and eats other animals for food. Prey is a term used to describe organisms that predators kill for food.​

Question 11

Describe the 10% rule

Answer 11

When energy is transferred to higher trophic levels (eating), about 10% is used at each level to build new biomass, becoming stored energy.​

Question 12

Where does the rest of the energy go in the 10% rule

Answer 12

90% of energy obtained from the lower level is spent at the next level performing essential functions and a substantial amount is lost as heat. ​

Question 13

define symbiotic Relationships​

Answer 13

When any type of a close and long-term biological interaction between two different biological organisms.

Question 14

Define mutualism and list an example

Answer 14

Organisms live closely together and BOTH benefit from the relationship.
ex: bees collecting pollen and nectar from the flowers

Question 15

define commensalism and list an example

Answer 15

One organism BENEFITS, whilst the other is UNAFFECTED​

ex: tree frogs use trees as protection

Question 16

Define producers in ecosystems

Answer 16

They are called autotrophs. Plants are producers. They are able to produce their own food (glucose) in the process of photosynthesis.

Question 17

define consumers

Answer 17

Consumers are also called heterotrophs. Animals are consumers. They obtain their food by consuming other organisms

Question 18

What are decomposers?

Answer 18

Decomposers, eg bacteria and fungi, break down organic matter into simpler inorganic materials that can be recycled in the ecosystem by producers. ​

Question 19

define photosynthesis

Answer 19

Photosynthesis is a chemical reaction that takes place in the Chloroplasts (green organelle present in the leaves and stems).​