Question 1

Which of the following is a shared trait (synapomorphy) that unites all animals within the animal kingdom?

Accepted Answer

Multicellularity with cells lacking cell walls

Question 2

Fungi play a crucial role in ecosystems as decomposers. Which process best describes their method of nutrient acquisition?

Accepted Answer

Absorptive heterotrophy, secreting enzymes to break down organic matter externally

Question 3

During the Cambrian explosion, which major evolutionary milestone occurred in animal evolution?

Accepted Answer

Rapid diversification of animal body plans and the appearance of most major animal phyla

Question 4

Which equation best describes exponential population growth?

Accepted Answer

$N_{t+1} = N_t + rN_t$

Question 5

A population of deer in a forest is limited by food availability and predation. Which type of population regulation is this an example of?

Accepted Answer

Density-dependent regulation

Question 6

Which of the following is NOT a characteristic of K-selected species?

Accepted Answer

Early maturity and rapid reproduction

Question 7

Which of the following best describes the difference between fundamental and realized niches?

Accepted Answer

The fundamental niche is the full range of environmental conditions an organism can tolerate, while the realized niche is the range it actually occupies due to competition and other biotic factors.

Question 8

Which equation would you use to calculate Net Primary Productivity (NPP) in an ecosystem?

Accepted Answer

$NPP = GPP - R$

Question 9

Which of the following is an example of mutualism?

Accepted Answer

Bees pollinating flowers while obtaining nectar

Question 10

Which of the following is a major threat to biodiversity caused by human activity?

Accepted Answer

Habitat destruction

Question 11

Which of the following best describes sexual selection?

Accepted Answer

Selection for traits that increase reproductive success, often through mate choice or competition

Question 12

Which of the following is a biogeochemical cycle that involves both atmospheric and geological reservoirs?

Accepted Answer

Nitrogen cycle

Question 13

A researcher observes that a population of frogs has a survivorship curve that drops sharply early in life, then levels off. Which type of survivorship curve is this?

Accepted Answer

Type III

Question 14

Which of the following is an example of a density-independent factor affecting population size?

Accepted Answer

A hurricane

Question 15

Which process is responsible for the movement of water from plant leaves to the atmosphere?

Accepted Answer

Transpiration

Question 16

Which of the following best describes the optimal foraging theory?

Accepted Answer

Animals maximize energy gained per unit time spent foraging

Question 17

Which of the following is a direct consequence of eutrophication in aquatic ecosystems?

Accepted Answer

Decrease in biodiversity due to algal blooms and hypoxia

Question 18

Which of the following is a correct sequence of trophic levels in a food chain?

Accepted Answer

Producer → Primary consumer → Secondary consumer → Tertiary consumer

Question 19

Which of the following is a plausible effect of global climate change on species distributions?

Accepted Answer

Species may shift their ranges toward the poles or higher elevations

Question 20

Which of the following actions can help mitigate the major threats to biodiversity?

Accepted Answer

Establishing protected areas and wildlife corridors

General Biology II: Final Exam Study Guide – Fungi, Animal Diversity, Ecology, and Ecosystems

Study Guide - Practice Questions

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