DP Biology (last assessment 2024)

Test builder »

Question 18M.3.HL.TZ1.c

Select a Test
Date May 2018 Marks available [Maximum mark: 2] Reference code 18M.3.HL.TZ1.c
Level HL Paper 3 Time zone TZ1
Command term Compare and contrast Question number c Adapted from N/A
c.
[Maximum mark: 2]
18M.3.HL.TZ1.c

Compare and contrast food chains and food webs.

[2]

Markscheme

Similarities:

a. in both food webs and chains organisms are arranged by trophic levels/feeding positions 

b. both represent the transfer of food/energy in an ecosystem 

c. both include producers and consumers 

Differences:

d. one species could occupy different trophic levels in a food web but not in a food chain / converse 

e. food chain represents one possible feeding option for each organism but food web represents more possible feeding relationships/trophic levels

OWTTE
(max 1 for similarities)
(max 1 for differences)

Syllabus sections