The diagram shows a food web in a pond. (i) Complete the table by writing the correct number of organisms for each statement about the food web. The first number has been written for you. statement number --- --- the number of producers 1 the number of consumers the number of herbivores the number of carnivores the number of food chains (ii) Draw and label a pyramid of biomass for one food chain from the food web. (b) The pond may become polluted by fertilisers containing…

Biology 5090/21 — May/June 2018

Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme

questions

marks

105

minutes

Topics Inheritance · Coordination and Control · Organisms and Their Environment · Sexual Reproduction in Humans · Cell Division and Reproduction · Sexual Reproduction in Plants · +5 more

Q110MOrganisms and Their EnvironmentFree sample

The diagram shows a food web in a pond.

Fig. 1.1

(a)

(i)

Complete the table by writing the correct number of organisms for each statement about the food web. The first number has been written for you.

statement	number
the number of producers	1
the number of consumers
the number of herbivores
the number of carnivores
the number of food chains

(ii)

Draw and label a pyramid of biomass for one food chain from the food web.

(b)

The pond may become polluted by fertilisers containing nitrogen.

Explain how this pollution might affect the population of frogs in the pond.

The rest of this paper

8 more questions

Q2Sexual Reproduction in Humans · Cell Division and Reproduction · Inheritance10M
Q3Sexual Reproduction in Plants11M
Q4Transport in Humans10M
Q5Classification · Disease and Immunity9M
Q6Transport in Flowering Plants · Plant Nutrition10M
Q7Inheritance10M
Q8Coordination and Control10M
Q9Coordination and Control10M

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