Practice Questions

TLS Online TPP Program

#Question id: 9217

Which of the following conditions is the most likely indicator of a population in an extinction vortex?

#SCPH06 I Botany

The species in question is found only in small, stable pockets of its former range.
The effective population size of the species falls below 1,000.
Genetic measurements indicate a loss of genetic variation over time.
The population is permanently small.

More Questions

#Question id: 4963

#SCPH06 I Botany

Which free-living cells were the earliest contributors to the formation of Earthʹs oxidizing atmosphere?

#Question id: 4963

#SCPH28 | Zoology

Which free-living cells were the earliest contributors to the formation of Earthʹs oxidizing atmosphere?

#Question id: 4964

#SCPH06 I Botany

Which of the following statements provides the strongest evidence that prokaryotes evolved before eukaryotes?

#Question id: 4964

#SCPH28 | Zoology

Which of the following statements provides the strongest evidence that prokaryotes evolved before eukaryotes?

#Question id: 4965

#SCPH06 I Botany

What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on Earth?

1. origin of mitochondria

2. origin of multicellular eukaryotes

3. origin of chloroplasts

4. origin of cyanobacteria

5. origin of fungal-plant symbioses

#Question id: 4965

#SCPH28 | Zoology

What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on Earth?

1. origin of mitochondria

2. origin of multicellular eukaryotes

3. origin of chloroplasts

4. origin of cyanobacteria

5. origin of fungal-plant symbioses