What is used for estimating the number of plants?
Pooter
Pitfall trap
Quadrat
What is the name of the sampling square used in fieldwork?
Transect
Coordinate
A 0.25 m2 quadrat was placed in a 100 m2 field. Five daisy plants were counted in the quadrat. What is the estimated number of daisies in the field?
2000
1000
80
Energy for all food chains comes from what source?
Sun
Plants
Animals
Producers are usually what?
Bacteria
Fungi
How is energy in food chains lost?
Heat and light
Respiration and heat
Death and decay
What happens to the biomass at each stage in a food chain?
Increases
Decreases
Stays the same
Which of these is systematic sampling?
Belt transect
Random quadrat
Zonation
How do decomposers break materials down?
Using hormones
Using their jaws
Using enzymes
How is efficiency of energy transfer calculated?
Biomass at the higher trophic level ÷ energy at lower level × 100%
Energy at the higher level plus the energy at the previous level
Energy at one level ÷ energy at the next level × 100%