Why might grass grow more abundantly in a field than in a wood?
Sheep spend most of their time in the woods
The field has a higher light intensity for photosynthesis
The wood is too sheltered from the wind
Woodland animals eat all the grass
What is the name of the first stage of photosynthesis?
Respiration
Carbon fixation
Light reactions
Which of the following can be used to sample the ground invertebrates in a habitat?
Quadrat
Pitfall trap
Sweep net
Moisture meter
This plant is native to tropical Africa. Its product is exported across the world. What is it?
Conkers
Pepper
Coffee
Mango
How can the reliability of light meter readings be improved?
Take one reading
Make sure you don't shade the light meter
Take several readings and obtain an average
Take one reading before and after sunset
Which of the following is NOT a barrier which may lead to speciation?
Geological
Behavioural
Ecological
Geographical
A gazelle’s role is to consume grass and be preyed upon by the tiger. This is termed its....
Population
Niche
Community
Habitat
How can errors be minimised when using a pH meter?
Wipe the probe between samples
Use the probe several times in a row
Wave the probe around in the air between samples
Only use the probe during dry conditions
What is the limiting factor of photosynthesis at "B"?
Toenails
Temperature
Carbon dioxide concentration
Light intensity
Plant absorb nitrates from the soil to make:
Starch
Glucose
Protein
Fat
If all the mice were stolen what would happen to the birds?
The number of birds would stay the same
Increase in number
Decrease in number
Be arrested
An alternative to using pesticides is:
Biological control
Using fertiliser
Adding more of the pest's prey
Eutrophication
What name is given to all the organisms of one species living in an ecosystem?
Biodiversity
Population
Community
Omnivores
What information does the presence or absence of an indicator species provide?
How much competition is present
How much pollution is present
How many populations are present
How many species are present
Which of the following organisms could be termed as a "secondary consumer"?
Owls
Carrots
Mice
Rabbit
Which product(s) of stage 1 of photosynthesis is/are passed onto stage 2?
ATP and hydrogen
ATP only
Hydrogen and oxygen
Oxygen only
To increase nitrate content in soil, farmers add:
Lime
Pesticide
Fertiliser
Nitrogen
Which of the following does NOT apply to mutations?
They are non-random
They are spontaneous
They happen in DNA
They are the only source of new alleles in a population
What is the limiting factor of photosynthesis at "C"?
Keith
Temperature
Light intensity
Carbon dioxide concentration
Which of the following is NOT a consequence of eutrophication?
Algal bloom
Multiplication of bacteria
Increased biodiversity
Decreased oxygen concentration in water
Organisms of the same species have similar characteristics and.....
produce sterile offspring
produce fertile offspring
produce animals
produce offspring
Which of the following is an abiotic factor?
Disease
Grazing
Light intensity
Predation
What is the name of stage 2 of photosynthesis?
Carbon fixation
Transpiration
Light reactions
Respiration
Which of the following is evidence that two animals are of the same species?
They look at each other knowingly
They have identical DNA
The cells of both species contain ribosomes
The can interbreed to produce fertile offspring
Which one of these environmental factors can increase mutation rate?
Low temperature
High windspeed
High moisture
UV radiation
Animals eat plant protein then digest it to:
Sugar
Nitrogen
Nitrates
Amino acids
How can a representative sample of the plant species growing in a field be obtained?
Place one quadrat at a random location in the field
Only count species who are more than half in a square
Randomly place a quadrat at many locations around the field
Randomly place many quadrats in one corner of the field
In the carbon fixation stage of photosynthesis, what combines with hydrogen to make glucose?
Water
Starch
Oxygen
Carbon dioxide
Which pyramid represents: Grass > Zebra > Lion > Flea ?
Pyramid N
Pyramid K
Pyramid L
Pyramid M
During the light reactions, light energy splits water into which two substances?
Hydrogen and oxygen
Oxygen and carbon dioxide
Hydrogen and carbon dioxide
Oxygen and carbon monoxide
Non-biodegradable pesticides accumulate in food chains. As you go up the food chain toxicity:
Decreases
Stays the same
Increases
Which of the following is NOT a potential fate of the glucose produced during photosynthesis?
Used in respiration
Used to make cellulose in cell walls
Converted to fatty acids and glycerol
Stored as starch
Which of the following resources would members of different species NOT compete for?
Mate
Food
Habitat
Light
What is an ecosystem?
The organisms & the non-living factorss they interact with
All the animals and plants in a community
The place where an organism lives
The biodiversity of an ecosystem
What is the name of the process in which new species are created?
Sexual selection
Natural selection
Speciation
Mutation
Energy is lost from food webs as:
Movement
Undigested material
All of the above
Heat
Which of these is not a consumer?
Daffodil
Edward Shearing
Bullfrog
Cheetah
Which of the following is NOT an example of a genetically-modified crop?
Large broccoli bred over many generations
Tomatoes with a longer shelf-life
"Golden rice" containing Vitamin A
Maize which can survive drought
What is the limiting factor of photosynthesis at "A"?
Temperature
Light intensity
Cheese
Carbon dioxide concentration
Which of the following is a biotic factor?
pH
Competition
Light intensity
Moisture
Which of the following is the first step in natural selection?
Some individuals die
Advantageous genes are passed onto offspring
Mutations create variation
The best adapted survive
In which plant cell organelle does photosynthesis take place?
Mitochondria
Vacuole
Nucleus
Chloroplast
Which process causes evolution over time in response to changing environmental conditions?
Photosynthesis
Respiration
Intraspecific competition
Natural selection
Which type of competition occurs between members of different species?
Intrapacific
World cup
Interspecific
Intraspecific
Name the omnivore in this food web.
Rabbit
Bird
Grass
Fox