Table of contents

1. Introduction to Biology2h 42m
2. Chemistry3h 37m
3. Water1h 26m
4. Biomolecules2h 23m
5. Cell Components2h 26m
6. The Membrane2h 31m
7. Energy and Metabolism2h 0m
8. Respiration2h 40m
9. Photosynthesis2h 49m
10. Cell Signaling59m
11. Cell Division2h 47m
12. Meiosis2h 0m
13. Mendelian Genetics4h 44m
14. DNA Synthesis2h 27m
15. Gene Expression3h 6m
16. Regulation of Expression3h 31m
17. Viruses37m
- Viruses
  37m
18. Biotechnology2h 58m
19. Genomics17m
- Genomes
  17m
20. Development1h 5m
21. Evolution3h 1m
22. Evolution of Populations3h 53m
23. Speciation1h 37m
24. History of Life on Earth2h 6m
25. Phylogeny2h 31m
26. Prokaryotes4h 59m
27. Protists1h 12m
28. Plants1h 22m
29. Fungi36m
- Fungi
  19m
- Fungi Reproduction
  17m
30. Overview of Animals34m
- Overview of Animals
  34m
31. Invertebrates1h 2m
32. Vertebrates50m
33. Plant Anatomy1h 3m
34. Vascular Plant Transport1h 2m
- Water Potential
  1h 2m
35. Soil37m
- Soil and Nutrients
  20m
- Nitrogen Fixation
  16m
36. Plant Reproduction47m
- Flowers
  33m
- Seeds
  14m
37. Plant Sensation and Response1h 9m
38. Animal Form and Function1h 19m
39. Digestive System1h 10m
- Digestion
  1h 3m
- Blood Sugar Homeostasis
  7m
40. Circulatory System1h 49m
41. Immune System1h 12m
42. Osmoregulation and Excretion50m
- Osmoregulation and Excretion
  50m
43. Endocrine System1h 4m
- Endocrine System
  1h 4m
44. Animal Reproduction1h 2m
- Animal Reproduction
  1h 2m
45. Nervous System1h 55m
- Neurons and Action Potentials
  1h 8m
- Central and Peripheral Nervous System
  46m
46. Sensory Systems46m
- Sensory System
  46m
47. Muscle Systems23m
- Musculoskeletal System
  23m
48. Ecology3h 11m
49. Animal Behavior28m
- Animal Behavior
  28m
50. Population Ecology3h 41m
51. Community Ecology2h 46m
52. Ecosystems2h 36m
53. Conservation Biology24m
- Conservation Biology
  24m

1. Introduction to Biology

Natural Selection and Evolution

General Biology

1. Introduction to Biology

Natural Selection and Evolution

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Multiple Choice

Which of the following is a likely outcome when two species compete for the same limited resource?

One species may outcompete the other, leading to the exclusion of the less competitive species.

Competition will cause both species to become extinct immediately.

Both species will always coexist without any changes in their populations.

Both species will evolve to require more of the limited resource.

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Verified step by step guidance

Understand the concept of competition: In ecology, competition occurs when two species rely on the same limited resource, such as food, water, or habitat. This interaction can influence the survival and reproduction of the species involved.

Review the principle of competitive exclusion: The competitive exclusion principle states that two species competing for the exact same limited resource cannot coexist indefinitely. One species will typically outcompete the other, leading to the exclusion of the less competitive species.

Eliminate incorrect options: Analyze the provided options. For example, 'Competition will cause both species to become extinct immediately' is unlikely because extinction is a complex process that typically involves multiple factors, not just competition. Similarly, 'Both species will always coexist without any changes in their populations' contradicts the competitive exclusion principle.

Consider evolutionary adaptations: While species may evolve over time to reduce competition (e.g., through resource partitioning or niche differentiation), the option 'Both species will evolve to require more of the limited resource' is not accurate because evolution typically favors adaptations that reduce competition, not increase it.

Conclude with the most likely outcome: Based on the competitive exclusion principle, the most likely outcome is that one species may outcompete the other, leading to the exclusion of the less competitive species. This aligns with ecological theory and observed patterns in nature.