biology

1. A community is the basic unit of biological evolution.
2. Natural selection determines the direction of variation.
3. Fossils are parts of ancient organisms.
4. The Catastrophism theory supports the theory of evolution.
5. Analogous structure refers to the structure derived from a common ancestor.
6. Convergent evolution means having a common ancestor.
7. Allele frequency refers to the absolute quantity of a particular allele present in the gene pool of a population.
8. Mutation are goal directed.
9. Genetic drift leads to the main evolutionary effect
10. The main evolutionary effect is that species with greater adaptability to the environment evolve more rapidly.
11. Gene flow occurs within a population.
12. Non-random mating will alter the frequency of alleles.
13. Assortative mating alters allele frequencies.
14. Natural selection makes species become better and more progressive in absolute sense.
15. Natural selection acts on population.
16. Natural selection acts on genotype.
17. Because of the predator-prey relationship, the competition among individuals of different species is the most intense.
18. Sexual selection helps animals find mates and increases the survival rate of their offspring.
19. Those that can mate and produce offspring belong to the same species.
20. Ecological isolation means that species live in regions that are physically separated from each other.
21. Sympatric speciation cannot occur instantaneously.
22. Localized distribution is the leading cause of extinction.
23. Adaptive radiation is the rapid evolution of many closely related species from several ancestors.
24. First bacterial predators had a cell wall.
25. The beginning of the endosymbiotic hypothesis was the process where aerobic bacteria engulfed anaerobic bacteria.
26. During the Cambrian period, the ancestors of sponges and jellyfish emerged.
27. During the Silurian period, a large number of modern invertebrates appeared.
28. During the Precambrian period, fish evolved internal skeletons.
29. The reproduction of primitive land plants does not necessarily depend on water.
30. The first group of animals to land on land: amphibians.
31. Early primates had not yet evolved binocular vision.
32. Australopithecus could not walk upright yet.
33. The Neanderthals were the ancestors of modern humans.
34. The modern classification system does not emphasize the evolutionary lineage framework and fails to restore the true evolutionary history.
35. The modern classification system has a fixed and rigid hierarchical structure of eight levels: domain → kingdom → phylum → class → order → family → genus → species
36. Modern classification often leads to confusion regarding convergent similarities (convergent evolution)
37. In terms of quantity and distribution, eukaryotes are the most dominant life group on Earth.
38. Bacteria and archaea are similar structurally and biochemically.
39. Protists are prokaryotes.
40. Ciliates are a type of prokaryote.
41. Blue-green algae and green algae are both prokaryotes.
42. Fungi only can reproduce asexually.
43. Bryophytes are vascular plants.
44. The moss plants have true roots, stems and leaves.
45. Annelids do not have muscles.
46. Crustaceans are mainly terrestrial animals.
47. The growth rate is equal to the mortality rate minus the birth rate.
48. If the mortality rate exceeds the birth rate at a stable rate, then the population will grow exponentially.
49. Population Growth= death rate-birth rate.
50. Predators, parasites, and competition are the density-independent factors.
51. Scramble competition will have true winners.
52. Straight (Type II) survival model = Low mortality rates across all age groups
53. Fertility>RLF=shrinking
54. Commensalism is beneficial to both organisms.
55. Ecological niche refers to the habitat of a living organism.
56. Only organisms with exactly the same ecological niche can coexist.
57. Batesian mimicry is a phenomenon where two or more species that are inherently toxic, unpalatable and have defensive capabilities evolve highly similar bright warning colors.
58. Batesian mimicry is beneficial to both the imitator and the model.
59. After the volcanic eruption, there is secondary succession.
60. The core of habituation is to establish an association between two stimuli or behaviors and rewards or punishments.
61. The behavior of hungry chimpanzees stacking boxes to reach for bananas is an innate one.
62. There is a sharp distinction between innate and learned behaviors.
63. Visual communication is applicable in all environments.
64. The chemical messages is the most flexible.
65. Tactile communication is only applicable to parent-child relationships.
66. Sound cannot convey complex information.
67. The structure of the bee society is not rigid.
68. The male bees participate in the labor.
69. All social animals possess a queen.
70. Tissues are simple stacks of cells.
71. Several random organs form an organ system.
72. Ciliated epithelium only expels foreign particles.
73. Bone is not connective tissue.
74. Blood and lymph are not connective tissue.
75. Skeletal muscle contraction is involuntary.
76. All neural regulation requires the involvement of the brain.
77. Some neural regulation does not require the central nervous system.
78. Positive feedback amplifies processes infinitely.
79. All invertebrates have open circulatory systems.
80. Arterial blood is always oxygen-rich.
81. The only function of the circulatory system is circulation.
82. The hearts of amphibians and reptiles are completely separated.
83. The right side of the heart pumps oxygen-rich blood.
84. The function of the atrioventricular node is to speed up the heartbeat.
85. Sponges have a digestive system.
86. Cnidarians have two mouths.
87. Bile contains digestive enzymes.
88. Bile is produced by the gallbladder.
89. The large intestine breaks down undigested substances left by the small intestine.
90. The renal tubules only perform reabsorption.
91. T cell receptors can be secreted.
92. All antigens are proteins.
93. Autoimmune diseases are caused by viral infections.
更多问卷 复制此问卷