IB Biology - Topic 4 Ecology and Conservation

Which of the following is the best definition of a population?

• A group of individuals that can interbreed and produce fertile offspring
• The number of individuals of the same species in a given area
• A group of species living and interacting with each other in a given area
• The total number of individuals in a given area

What is the role of the snake in this food web?

• Primary consumer
• Secondary consumer
• Tertiary consumer
• Producer

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-4

NGSS.HS-LS2-6

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 2
Segmented body ................................................. go to 3

2. Body is not symmetrical ..................................... specimen A
Body is symmetrical ........................................... specimen B

3. Jointed appendages present ................................ specimen C
Jointed appendages absent ................................. specimen D

• A
• B
• C
• D

The data shows the number of flowers per flower head of a random sample from a white clover (Trifolium repens) population.

Mean = 62

Standard deviation = 12.5
What statistical percentage of the population has between 49 and 75 flowers per flower head?

• 5%
• 32%
• 68%
• 95%

Which factors promote evolution in a species?
I. Sexual reproduction
II. Environmental change
III. Overproduction of offspring

• I and II only
• II and III only
• I and III only
• I, II and III

Tags

NGSS.HS-LS4-2

Which of the following statements correctly describes the carrying capacity of an environment?

• The maximum rate of population growth for a species
• The area of land that can support a denned population of a species
• The maximum population of a species that can be sustainably supported by a given environment
• The minimum population of a species that can be sustainably supported by a given environment

Tags

NGSS.HS-LS2-1

Whats the correct definition of a species?

• Species are organisms that share the same Genus
• Species are groups of organisms that live together in the same habitat
• Species are groups of organisms that can potentially interbreed to produce offspring.
• Species are groups of organisms that can potentially interbreed to produce fertile offspring.

Tags

NGSS.HS-LS4-2

Fill in the blank:
_____________ are heterotrophs that obtain organic nutrients from detritus by internal digestion.

• Saprotrophs
• Detritivores
• Organisms
• Fungi

Tags

NGSS.MS-LS2-3

An Ecosystem  can be defined as the interactions between...

• Community + Abiotic factors
• Biotic + Abiotic factors
• Community + Habitat
• Abiotic factors + Community + Environmental factors

Tags

NGSS.MS-LS2-3

To have a functioning mesocosm it is important that...

• Light and Oxygen can enter
• Heat is allowed to leave along with CO₂
• Light is allowed to enter
• Nothing is allowed to enter or leave

Tags

NGSS.HS-LS2-5

NGSS.HS-LS1-5