B2 Revision Crossword

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What classification system is based on one or two characteristics?
ARTIFICIAL
1 of 52
What classification system is based on evolutionary relationships?
NATURAL
2 of 52
All organisms are named by which system?
BINOMIALSYSTEM
3 of 52
What is a group of organisms that can interbreed to produce fertile offspring called?
SPECIES
4 of 52
How do bacteria reproduce?
ASEXUALLY
5 of 52
Dolphins have similarities to fish because they live in the same habitat. What type of relation is this?
ECOLOGICAL
6 of 52
What are organisms produced when members of two species interbreed called?
HYBRIDS
7 of 52
What characteristic means that hybrids cannot be classed as a species?
INFERTILE
8 of 52
Organisms may have different features if they live in different ........?
HABITATS
9 of 52
What can be used to see how similar organisms are and help to reclassify them that was not available 60 years ago?
DNAANALYSIS
10 of 52
Pyramids of biomass show the ..... ..... of living material at each stage of a food chain.
DRYMASS
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Pyramids of biomass may look different to pyramids of numbers if .......... are very large.
PRODUCERS
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What organism that feeds of another living organism could also affect how pyramids of biomass look compared to pyramids of numbers?
PARASITE
13 of 52
As energy flows along a food chain some is used in growth. Most of the energy, however, is transferred into less useful forms such as heat from ...........
RESPIRATION
14 of 52
The material that is lost at each stage of the food chain is not wasted. Most of the waste is used by ............
DECOMPOSERS
15 of 52
The ................. of energy transfer can be calculated between trophic levels.
EFFICIENCY
16 of 52
Which cycle partially involves plants and animals respiring?
CARBON
17 of 52
Decomposers are soil bacteria and fungi. What do they convert proteins and urea into?
AMMONIA
18 of 52
What converts the ammonia to nitrates in the nitrogen cycle?
NITRIFYINGBACTERIA
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What do denitrifying bacteria convert nitrates into in the nitrogen cycle?
NITROGENGAS
20 of 52
Nitrogen-fixing bacteria living in root nodules fix nitrogen gas. What does this also occur by?
ACTIONOFLIGHTNING
21 of 52
Which type of soils will decay be slower in?
WATERLOGGED
22 of 52
What is one thing that decomposers need to break down dead material in soil?
OXYGEN
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What conditions will also slow down decay?
ACIDIC
24 of 52
An ................ ................ describes the habitat that an organism lives in and also its role in the habitat.
ECOLOGICALNICHE
25 of 52
Sometimes both organisms benefit as a result of their relationship. What is this called?
MUTUALISM
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Give one example of mutualism.
POLLINATION
27 of 52
Pea plants also benefit from mutualism. Pea plants are legumes with structures on the roots called nodules. What live in these nodules?
NITROGENFIXINGBACTERIA
28 of 52
Some animals are adapted to living in very cold conditions. The keep warm by reducing heat loss. This means that they have excellent ................ to cut down heat loss.
INSULATION
29 of 52
Which animal has a counter-current heat exchange mechanism to help reduce heat loss?
PENGUINS
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Other organisms that live in cold climates may have biochemical adaptations, such as .............. .............. in their cells.
ANTIFREEZEPROTEINS
31 of 52
Name one organism that lives in a desert.
CACTI
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What is the type of adaptation called when camels increase the loss of heat by having very little hair on the underside of their bodies?
ANATOMICAL
33 of 52
What are organisms that can survive in hot conditions called?
EXTREMOPHILES
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What are organisms like polar bears called?
SPECIALISTS
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Rats can live in several habitats. What are these organisms called based on this?
GENERALISTS
36 of 52
What is there within any species? (Natural selection)
VARIATION
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Organisms might be prevented from mating because they live in different areas. What type of isolation is this?
GEOGRAPHICAL
38 of 52
Organisms might also be prevented from mating due to what other type of isolation?
BEHAVIOURAL
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More and more bacteria are developing resistance to what? (Natural selection)
ANTIBIOTICS
40 of 52
Before Darwin, Jean Baptiste de Lamarck had a different theory, called law of the ............. ..............
ACQUIREDCHARACTERISTICS
41 of 52
Carbon dioxide (from the burning of fossil fuels) may increase the greenhouse effect and what else?
GLOBALWARMING
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Name one organism that is killed by acid rain (caused by sulfur dioxide)...
FISH
43 of 52
The human population of the world is growing at an ever-increasing rate. This is called ..................... growth.
EXPONENTIAL
44 of 52
The growth in population is happening because the birth rate is exceeding the ......... .........
DEATHRATE
45 of 52
What is the amount of pollution caused per person or organisation called?
CARBONFOOTPRINT
46 of 52
Pollution in water or air can be measured using direct methods or by what?
INDICATORORGANISMS
47 of 52
What is the advantage of using direct methods to measure pollution?
ACCURACY
48 of 52
What is one thing that conservation can protect?
FOODSUPPLY
49 of 52
What do some countries want to lift the ban on in terms of conservation?
WHALING
50 of 52
Scientists believe there is a need to kill some whales to help find out more about how whales can survive at ............. .............
EXTREMEDEPTHS
51 of 52
Scientists believe there is a need to kill some whales to help find out more about how whales can survive at ............. .............resource.
FOSSILFUELS
52 of 52

Other cards in this set

Card 2

Front

What classification system is based on evolutionary relationships?

Back

NATURAL

Card 3

Front

All organisms are named by which system?

Back

Preview of the front of card 3

Card 4

Front

What is a group of organisms that can interbreed to produce fertile offspring called?

Back

Preview of the front of card 4

Card 5

Front

How do bacteria reproduce?

Back

Preview of the front of card 5
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