Some students carried out an experiment to investigate the rate of decay of a potato. Below are just four of the experiments they tried. In which one would the potato decay fastest?
0%
Large pieces in a dry sealed container in warm conditions
0%
Small pieces in an open container in warm conditions and sprayed with water each day
0%
Large pieces in a dry sealed container in a refrigerator
0%
Small pieces in a dry sealed container in a refrigerator
Q.3.
Which of the following methods of packaging does not break down naturally?
0%
A plastic bag
0%
A large envelope made from card
0%
Tissue paper used to protect delicate items in a box
0%
A cotton bag
Q.4.
In what form can these materials be returned to the environment?
0%
As droppings
0%
As carbon dioxide
0%
As dead bodies
0%
All of the above
Q.5.
Which word correctly describes something that can be broken down by the microorganisms that cause decay?
0%
Biodecayable
0%
Biodegradeable
0%
Biodestroyable
0%
Biodestructable
Q.6.
Gardeners will 'turn' their compost regularly. This involves using a garden fork to bring the compost from the bottom of the pile to the top. Which of the following is the scientific reason for doing this?
0%
They were taught to do it by their parents
0%
So that the worms in the compost can get more light
0%
To get more air into the compost
0%
Organic materials decay better in the dark
Q.7.
Many local authorities run garden waste composting schemes. Which of the following is an advantage of this?
0%
Large branches of trees in the waste need to be cut into much smaller pieces
0%
It reduces the amount of waste sent to landfill sites
0%
It recycles nutrients that would otherwise be lost
0%
The compost can be sold cheaply to local gardeners
Q.8.
How do microorganisms cause decay?
0%
They release enzymes which break down the dead material
0%
They release hormones that break down the dead material
0%
They engulf the dead material piece by piece
0%
They use their vacuoles as miniature mouths
Q.9.
Which of the following makes things decay?
0%
Woodlice
0%
Worms
0%
Bacteria and fungi
0%
Viruses
Q.10.
Why do living things take things from their environment?
0%
They are parasites
0%
For growth and other life processes
0%
They are saprophyes
0%
To give them more room for living
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.