1. What does the number of individuals per unit area refer to
A. Index of diversity
B. Population density
2. Which of the following best describes limiting factors?
A. Number of individuals per unit area
B. Number of species that can reproduce
C. Anything that limits the size of a population
D. Anything that permits species invasion
3. Extinction is the end of species existence. Which of the following are the two types of
?
A Mass and Volume
C. Background and Mass
B. Area and Mass
D. Natural and Volume
4. The International Union for Conservation of Nature (IUCN) is known for its assessment
of the conservation status of species. Which of the following is/are the categories for
species conservation status?
A. Extinct
B. Lower-risk C. Threatened D. All of these
Which of the following criteria of IUCN refers to the high-risk of endangerment in the
wild?
A. Extinct in the wild
C. Endangered
B. Near threatened
D. Vulnerable
Which type of extinction, refers to the widespread and rapid decreas​