DP Biology (first assessment 2025)

Question 19N.2.HL.TZ0.14d

Date	November 2019	Marks available	[Maximum mark: 2]	Reference code	19N.2.HL.TZ0.14d
Level	HL	Paper	2	Time zone	TZ0
Command term	Outline	Question number	d	Adapted from	N/A

[Maximum mark: 2]

19N.2.HL.TZ0.14d

(d)

Outline what is meant by the niche concept.

[2]

Markscheme

a. the role of an organism in its environment
OR
functional position of an organism in its environment ✔

b. includes «spatial» habitat AND feeding activities AND interactions with other species in the community ✔ All required.

c. no two species can occupy the same niche ✔

d. a niche can be fundamental or realized ✔ OWTTE

Syllabus sections

B. Form and function » B4.2. Ecological niches » B4.2.1. Ecological niche as the role of a species in an ecosystem

B. Form and function » B4.2. Ecological niches » B4.2.12. Fundamental and realized niches

B. Form and function » B4.2. Ecological niches » B4.2.13. Competitive exclusion and the uniqueness of ecological niches

Question 19N.2.HL.TZ0.14d

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