Which scientist is credited with developing the theory of natural selection?
Charles Darwin
Gregor Mendel
Louis Pasteur
Alfred Wegener
Correct Answer :
A. Charles Darwin
Related Questions
What is the term for the process by which modern humans gradually replaced archaic humans, such as Neanderthals, through migration and competition?
Speciation
Coevolution
Extinction
Out-of-Africa hypothesis
What is the term for the process by which two unrelated species evolve similar traits in response to similar environmental pressures?
Natural selection
Convergent evolution
Artificial selection
Coevolution
Which of the following is an example of an invasive species?
Native grasses in their natural habitat
A non-native tree planted in a garden
A species that naturally occurs in a specific ecosystem
A species that is endangered
What is the term for the total number of individuals of a species in a given area?
Population density
Carrying capacity
Population dispersion
Population growth rate
Which of the following is a direct benefit of biodiversity to humans?
Increased greenhouse gas emissions
Decreased agricultural productivity
Development of new medicines
Soil erosion
Which of the following is NOT a method of preventing the spread of infectious diseases?
Vaccination
Antibiotic use
Handwashing
Quarantine
Which term refers to structures that have no apparent function but resemble functional structures in other organisms?
Homologous structures
Analogous structures
Vestigial structures
Adaptive structures
What is the term for the process by which a pathogen is recognized and neutralized by the immune system upon subsequent exposure?
Vaccination
Antibody production
Immunity
Immune response
Which class of vertebrates includes animals with scales, a bony skeleton, and a two-chambered heart?
Mammals
Amphibians
Reptiles
Birds
The smallest unit of a chemical element that retains the properties of that element is called:
Atom
Molecule
Cell
Tissue
Which type of survivorship curve is characterized by a high mortality rate in early life, followed by high survivorship in later life?
Type I
Type II
Type III
Type IV
What is the term for the transfer of pollen from the male reproductive organ to the female reproductive organ of a flower?
Fertilization
Pollination
Germination
Embryo development
Which of the following is a characteristic of arachnids?
Six legs
Two pairs of antennae
Exoskeleton made of chitin
Segmented body
Which plant hormone is responsible for promoting cell elongation and growth in response to light?
Auxin
Gibberellin
Ethylene
Cytokinin
Which of the following is NOT part of the human digestive system?
Stomach
Liver
Kidney
Small intestine
Which hominid species is known for its use of fire and tools, and is believed to be the first to migrate out of Africa?
Neanderthals
Homo erectus
Australopithecus afarensis
Homo habilis
What is the largest group of arthropods, known for their jointed appendages and hard exoskeleton?
Insects
Arachnids
Crustaceans
Myriapods
What is the function of the human gallbladder?
Storage of bile
Production of insulin
Digestion of proteins
Filtration of blood
What is the term for the maximum number of individuals of a species that an ecosystem can support indefinitely?
Carrying capacity
Population density
Limiting factor
Exponential growth
Which biome is characterized by cold temperatures, permafrost, and a lack of trees?
Tundra
Desert
Tropical rainforest
Grassland
Which blood vessels carry oxygenated blood away from the heart to the body's tissues?
Veins
Arteries
Capillaries
Venules
What is the process by which plants respond to light and grow toward it called?
Phototropism
Gravitropism
Thigmotropism
Hydrotropism
Which type of learning occurs when an animal associates a neutral stimulus with a meaningful stimulus to produce a response?
Classical conditioning
Operant conditioning
Habituation
Imprinting
Which of the following is a characteristic of mammals?
Cold-blooded
Lay eggs
Have mammary glands
Breathe through gills
Which type of behavior involves the establishment and maintenance of a territory for mating and/or obtaining resources?
Agonistic behavior
Courtship behavior
Dominance hierarchy
Territorial behavior
In which plant tissue does most photosynthesis occur?
Epidermis
Xylem
Phloem
Mesophyll
In which type of population distribution are individuals evenly spaced throughout their habitat?
Random dispersion
Clumped dispersion
Uniform dispersion
Overlapping dispersion
What is the role of the hypothalamus in the human brain?
Coordination of muscle movements
Regulation of body temperature and hormone secretion
Memory storage
Visual processing
Which level of ecological organization includes all the biotic and abiotic factors in a given area?
Population
Community
Ecosystem
Biosphere
Which of the following is a bacterial disease that primarily affects the respiratory system and can be prevented by vaccination?
Tuberculosis
Malaria
Cholera
Whooping cough (Pertussis)