2 No More Energyyg Ssj (un)

Question 1

What is a producer

Answer 1

Organism that produces its own food through photosynthesis

Question 2

What is primary consumer

Answer 2

Organism that eats other organism
Herbivore/omnivore

Question 3

What is secondary consumer

Answer 3

Omnivore/carnivore that eats primary consumer

Question 4

What is tertiary comsumer

Answer 4

Secondary consumer that eats secondary consumer
Usually bigger

Question 5

What are decomposers

Answer 5

Organism that breaks down dead animals and plants into materials / nutrients
Through saprophytism

Question 6

What is food chain

Answer 6

Show the feeding relationship between organisms

Question 7

What is food web

Answer 7

Interconnections of a few food chains

Question 8

Why is energy lost in food web

Answer 8

Used to move & carry life processes - respiration
Heat energy & chemical energy - undigested food = faeces

Question 9

What is nutrient cycle

Answer 9

Nutrients are obtained from a balanced ecosystem
Nutrients are returned to the environment

Question 10

What is role of plants and animals in increasing water content in atmosphere

Answer 10

Plants - across water through roots -> released through transpiration
Animals - respiration, defecation & excretion (sweating&urination)

Question 11

What is role of plant in preventing soil erosion

Answer 11

Hold soil tightly, makes soil structure compact
Slows down flow of water

Question 12

What is role of plants to prevent soil from becoming dry

Answer 12

Leaves cover surface & reduce rate of evaporation

Question 13

What is a habitat

Answer 13

Natural surroundings or home of organism

Question 14

What is a species

Answer 14

Group of organisms that have common characteristics and can reproduce to breed offspring

Question 15

What is a population

Answer 15

Group of organisms of same species that live in same habitat

Question 16

What is community

Answer 16

Few populations of different organisms that live together in one habitat & have mutual interaction

Question 17

What is ecosystem

Answer 17

Few communities that live together in one habitat and have mutual interaction
Including all non living components - soil water air

Question 18

When is ecosystem balanced

Answer 18

Living & nonliving components are in state of harmony without external interference

Question 19

What does symbiosis mean

Answer 19

Two or more organisms of different species live closely & interact with one another

Question 20

State mutuality of clown fish and sea annemone

Answer 20

Sea anemone - protects clown fish from predators, supplies food
Clown fish - cleans sea anemone & provide nutrients - waste

Question 21

State mutuality of lichen

Answer 21

Fungi - suplly water and minerals
Algae - photosynthesis - supply food

Question 22

State mutuality of mynaj and buffalo

Answer 22

Mynah- gets food by eating lice that sticks on body
Bufallo - free from lice

Question 23

State commensalism of remora fish and shark

Answer 23

Remora fish (commensal) latches on shark (host) and gets its food from scraps

Question 24

State commensalism of birds nest fern and trees

Answer 24

Birds nest fern (commensal) grow in between branches of tree (host) to get sunlight

Question 25

State parasitism of tapeworm and human intestine

Answer 25

Tapeworm (parasite) lives in human intestine (host) absorbs nutrients

Question 26

State parasitism of lice and human & animals

Answer 26

Lice (parasite) sucks blood of humans and animals (host)

Question 27

What is pre-preadtor

Answer 27

One organism that eats another organism

Question 28

What is competition

Answer 28

Organisms in one habitat compete for limited supply of basic needs - light, space, water, food, mates