8/14/2019 B1a Revision Booklet[2]

1/8

ENVIRONMENT REVISION

Name:

Class:

Date:

Pg 10-11 Competing for resourcesPick a habitat-woodlands, seaside, Savannah. Draw and describe one

8/14/2019 B1a Revision Booklet[2]

2/8

type ofinter-species competition and one type ofintra-speciescompetition.

Pg 12-13 Sampling and estimating populationsOutline, step by step, how you would count the number of daises in afield. Why wouldn't you just count all of the daises in a field?

Pg 16 -17 Chains, Webs and Pyramids

Write 2 food chains fromthis food web.

NAME AProducer:

Primary Consumer:

Secondary Consumer:

Herbivore:

Carnivore:

Predator and Prey:

Draw a pyramid ofnumbers and a pyramid ofbiomass for the following

8/14/2019 B1a Revision Booklet[2]

3/8

information:

Organism Number ofindividuals

Average biomass (dry)mass of one individual(grams)

Total Biomass of allindividuals (grams)

Ladybird 10 1 10

Aphid 1000 0.1 100Rose Bush 1 1000 1000

Pyramid of NUMBERS

Pyramid of BIOMASS

Pg 18 19 Wheat vs Meat

The energy arrow shows what happens to the energy in therosebushthat an aphideats.

Some energy is

used by the aphid

for

Energy in

Only10% of the energy isused for

.

Some energy passes

out of the aphidas

.

8/14/2019 B1a Revision Booklet[2]

4/8

Pg 20 21 Going OrganicCircle the words which relate to organic farming:

factory farms Artificialfertilizers

pesticide manurebiological control battery cages

Intensivefarming

crop rotation

chemicalpesticides

compost

Pg 22 23 Changing organismsOver thousandsof years,pigs have been bred from wild boars.

Nametwocharacteristics that have been selected for in breeding modernpigs.

1) __________________________________________________________________

2) __________________________________________________________________

Decide if the changes can be made by selective breeding, or ifthey are changes that can be made by genetic modification.

Wheat that produces biggerseeds

Banana plants that produce avaccine in their fruit

Rabbits that glow in the dark Wheat that cannot be killed by aparticular wheat killer

Cows that produce more milk Dogs that can run faster

Pg 24 25 Natural SelectionMatch Darwin's Observations to his Deductions

Observation Deduction

Organisms over-produce,but populations remainfairly constant

The ones who are bestadapted to theirenvironment are morelikely to survive and

8/14/2019 B1a Revision Booklet[2]

5/8

breed

All organisms showvariation

Well-adapted parentsmay pass on some usefulcharacteristics

Some characteristics areinherited

Some offspring must die

Pg 26-27 Evidence for Evolutionary

Name 2 similarities between the Lobe-finned fish and Earlyamphibian:

1) __________________________________________________________________

2) __________________________________________________________________

Name 2 differences between the Lobe-finned fish and Earlyamphibian:

1) __________________________________________________________________

2) __________________________________________________________________

Draw 3-4 steps of how fossils are formed.

8/14/2019 B1a Revision Booklet[2]

6/8

Pg 28 -29 Variation

Fill in the missing parts

8/14/2019 B1a Revision Booklet[2]

7/8

Pg 32 Environment Keywords

How are these groups of words related?

Pyramid of numbers Pyramid of Biomass

Producer Predator Prey

Genetic ModificationSelective breeding

Evolution Natural Selection

OrganicIntensive

Inter-speciesIntra-Species

8/14/2019 B1a Revision Booklet[2]

8/8

Food Chain Food Web