M7 Evolution & Taxonomy Flashcards
Involves a change in the inherited characteristics of biological populations over successive generations.
Evolution
This theory on the origin of life theorizes that life on Earth was brought by meteors, comets, and asteroids from space.
Panspermia
Organisms undergo changes/variation in their traits to enable them to better adapt to their environment, to successfully reproduce, and to survive
Theory on Natural Selection
Evolutionary history of species, which is usually determined through speciation.
Phylogeny
Refers to similar characteristics originating from a common ancestry
Homology
According to Chemosynthesis theory, which of the following statements are true?
A. DNA was the first genetic material because it is stable.
B. RNA was the first genetic material before DNA.
C. The first form of life did not have genetic material.
D. Proteins, instead of nucleic acids, served as the first genetic material.
B.
RNA was the genetic material of the first life form and DNA evolved later as the more stable genetic material.
Which of the following is not an example of natural selection?
A. Some frog species developed poisonous skin to ward off predators.
B. Mammals living in the cold places developed thick fur coating.
C. Flowers have grown to have attractive colors which attract specific types of pollinators.
D. Reduction in size of rabbits due to food scarcity.
D.
Absence of food is an effect of present environmental stresses and is not an adaptation for better survival.
Insects and birds both have wings. This is an example of:
A. Analogous structures
B. Homologous structures
C. The structures are not related
D. Both A and B
A.
They have similar function but the ancestry is not similar.
Which of the ff does not support the theory of evolution?
A. Fossil records
B. Microorganisms being develop resistance against antibiotics
C. Organisms with similar genetics form in similar areas
D. Characteristics of organisms remain unchanged over the course of time
D.
Two organisms are more closely related to each other if they’re grouped in a common __________?
A. Genus
B. Order
C. Family
D. Class
A. Genus
The lower the rank of classification they share, the more closely related they are.
Which of the ff characteristics is true in Domain Bacteria but not un Domain Archaea?
A. Unicellular
B. Prokaryotic
C. Absence of a nuclear envelope
D. Presence peptidoglycan layer
D. Presence of peptidoglycan layer
In a class field trip of Prof. Geller and his biology students, living microorganisms were found in hot vents of Mt. pinatubo. In what domain do these organisms most probably belong to?
A. Domain Eukarya
B. Domain Archaea
C. Domain Bacteria
D. Both B and C
B. Domain Archaea
Organisms found in inhospitable locations are typically members of Domain Archaea.
A BS Biology student was dealing with an unknown organism; the student confirmed the following data: it was multicellular, no chlorophyll was found, and it was not capable of transmitting information via impulses. What kingdom would the organism probably belong to?
A. Plantae
B. Fungi
C. Protista
D. Animalia
B. Fungi
