WorksheetsBioenergetics
Total questions: 28
Worksheet time: 22mins
Identify the cycle pictured
The Nitrogen Cycle
The Water Cycle
The Carbon Cycle
The Phosphorous Cycle
True/False, Plants can use nitrogen directly from the atmosphere.
true
false
Nitrogen in the atmosphere is not available. Free nitrogen has to be changed into a usable form in a process called ____
nitrogen fixation
transpiration
photosynthesis
cellular respiration
where do animals get nitrogen from?
from the soil
from the water they drink
directly from the air
from the plants they eat
Species that are clearly critical to the functioning of an ecosystem are known as
biodiversity
keystone species
main species
native species
Biodiversity, aka biological diversity, usually refers to
the same species in a general location
the number of different species in a given area
the number of animal species in a given area
the number of plant species in a given area
a species that is not native to a particular region and has no natural predators and little competition
consumer species
producer species
invasive species
adapted species
A population is
a group of similar species in different areas
a group of the same species in the same geographic area.
a group of several species in the same geographic area
a group of several species along with their abiotic factors in a small area.
In the diagram below, how would spraying pesticides (used for destroying insects) to remove ALL the mosquitoes affect this food web?
Mosquitoes are not an important species, and would not affect the food web
Removing mosquitoes would cause the entire food web to be affected
All the insects that compete with mosquitoes would also die
Removing the mosquito would not affect the top level consumer
1.What goes in Box 5 of the food web in the figure?
herbivores
Carnivores
scavenger
decomposer
The approach of conservation, where the whole ecosystem is protected , in order to conserve the biodiversity at all levels is called as _____approach.
In situ conservation
Ex situ conservation
The impacts of loss of biodiversity include –
A. Decrease in plant production.
B. Lowered resistance to environmental perturbation
C. Increased variability in ecosystem processes like water use, pest / disease cycle, plants productivity.
D. None
A, B
A, B, C
B, C
D
_______________ diversity refers to the variety of genes contained within species of plants, animals and micro-organisms
species
genetic
gene
Variety
___________conservation of plants and animals outside their natural habitats.
ex situ
extrinsic
intrinsic
in situ
The work of seedbanks involves:
Creating the cool, dry conditions needed for storage. This means seeds can be stored for a long time.
Testing seeds for viability (the ability to grow into a plant). Seeds are planted, grown and new seeds are harvested to put back into storage.
Seeds undergo X-rays, to ensure viability
All of the above
Which of these is true?
1) Research in zoos increases knowledge about the behaviour, physiology and nutritional needs of animals. This can contribute to conservation efforts in the wild.
2) Zoos can carry out research that’s not possible for some species in the wild, e.g. nutritional or reproductive studies.
3) A disadvantage is that animals in captivity may act differently to those in the wild.
1
2
3
all of the above
Farmers spray insecticides to kill grasshoppers. Which organism will increase when the grasshopper die off?
Corn
Rats
Frogs
Snakes
What happens to all of the energy that is lost when you move up the pyramid?
Heat given off
Goes to other organisms
Used by the producers
Goes to decomposers
