Biology Ecology Paper
Name: _______________________
IB DP Biology: Ecology Test – Paper 1
40 Points
45 Minutes
1.Which phylum does the plant below belong to?
A.AngiospermophytaB.BryophytaC.ConiferophytaD.Filicinophyta2.What is a community composed of?
A.Habitats
B.Populations
C.Abiotic factors
D.Biotic and abiotic factors
3.Which of the following is the best definition of a population?
A.A group of individuals that can interbreed and produce fertile offspring
B.The number of individuals of the same species in a given area
C.A group of species living and interacting with each other in a given area
D.The total number of individuals in a given area
4.The graph below represents a sigmoid (S-shaped) population growth curve. Three sections of the curve are indicated (1, 2 and 3).
In which of the sections is natality plus immigration greater than mortality plus emigration?
A.1 only
B.2 only
C.1 and 2 only
D.3 only
5.Two different trees have been classified as Pinus pinea and Pinus nigra. Which of the following statements is correct?
A.Both trees belong to the same class but a different genus.
B.Both trees belong to the same family and same genus.
C.The species name of both trees is Pinus.
D.The family names are pinea and nigra.
6.A collection of four animal specimens is observed and a dichotomous key is applied. Which specimen is an arthropod?
1.Non-segmented body.........................................go to 2Segmented body.................................................go to 3
2.Body is not symmetrical.....................................specimen ABody is symmetrical...........................................specimen B
3.Jointed appendages present................................specimen CJointed appendages absent.................................specimen D
A.Specimen A
B.Specimen B
C.Specimen C
D.Specimen D
7.Which of the following ecological units includes abiotic factors?
A.A community
B.An ecosystem
C.A population
D.A trophic level
8.In the
IB DP Biology: Ecology Test – Paper 1
40 Points
45 Minutes
1.Which phylum does the plant below belong to?
A.AngiospermophytaB.BryophytaC.ConiferophytaD.Filicinophyta2.What is a community composed of?
A.Habitats
B.Populations
C.Abiotic factors
D.Biotic and abiotic factors
3.Which of the following is the best definition of a population?
A.A group of individuals that can interbreed and produce fertile offspring
B.The number of individuals of the same species in a given area
C.A group of species living and interacting with each other in a given area
D.The total number of individuals in a given area
4.The graph below represents a sigmoid (S-shaped) population growth curve. Three sections of the curve are indicated (1, 2 and 3).
In which of the sections is natality plus immigration greater than mortality plus emigration?
A.1 only
B.2 only
C.1 and 2 only
D.3 only
5.Two different trees have been classified as Pinus pinea and Pinus nigra. Which of the following statements is correct?
A.Both trees belong to the same class but a different genus.
B.Both trees belong to the same family and same genus.
C.The species name of both trees is Pinus.
D.The family names are pinea and nigra.
6.A collection of four animal specimens is observed and a dichotomous key is applied. Which specimen is an arthropod?
1.Non-segmented body.........................................go to 2Segmented body.................................................go to 3
2.Body is not symmetrical.....................................specimen ABody is symmetrical...........................................specimen B
3.Jointed appendages present................................specimen CJointed appendages absent.................................specimen D
A.Specimen A
B.Specimen B
C.Specimen C
D.Specimen D
7.Which of the following ecological units includes abiotic factors?
A.A community
B.An ecosystem
C.A population
D.A trophic level
8.In the