Photo. & Bio. Sht_4
1.
a) Use the numbers in the following food chain to draw a pyramid of numbers.
rose greenfly ladybirds blue tits
1 50 10 5
b) Explain why this pyramid of numbers is not a true pyramid shape.
c) Name 2 differences between a pyramid of numbers and a pyramid of biomass?
d) Draw the shape of a pyramid of biomass for this food chain.
2. The following diagram represents a food web in a woodland ecosystem.
Identify the producer in this food web.
3. In the pyramid of biomass below, letters A, B, C and D represent different organisms in the food web above.
Identify one organism that could be placed in the pyramid at level D.
4. The table below shows some of the characteristics of six ladybird species which
live in this country.
a) Use the information in the table to idenitfy the missing parts A, B and C in the key below.
b) Which species of ladybird can be less than 4 mm in length?
c) What characteristic could be used to distinguish a “cream streaked ladybird”
from a “7 spotted ladybird”?
d) A student found a ladybird with a red wing case and a body length of 7mm.
What specific feature of its appearance allowed it to be identified as an
“Eyed ladybird”?
