Perpetuation Of Life Flashcards
What is the primary mechanism by which life is perpetuated?
Reproduction
True or False: All organisms reproduce sexually.
False
Fill in the blank: The process by which organisms produce offspring is called __________.
reproduction
What are the two main types of reproduction?
Sexual and asexual reproduction
Multiple choice: Which of the following is a form of asexual reproduction? A) Binary fission B) Pollination C) Fertilization
A) Binary fission
What role does DNA play in the perpetuation of life?
DNA carries genetic information necessary for reproduction and development.
True or False: Genetic variation is essential for the evolution of species.
True
What is the term for the genetic makeup of an organism?
Genotype
Multiple choice: Which process increases genetic diversity? A) Asexual reproduction B) Sexual reproduction C) Cloning
B) Sexual reproduction
Fill in the blank: The study of heredity and the variation of inherited characteristics is called __________.
genetics
A process where organisms better adapted to their environment tend to survive and produce more offspring.
Natural selection
True or False: All mutations are harmful to an organism.
False
What is the main advantage of sexual reproduction?
It increases genetic diversity among offspring.
Multiple choice: In plants, which structure is primarily responsible for reproduction? A) Leaves B) Roots C) Flowers
C) Flowers
Fill in the blank: The process by which plants produce seeds is known as __________.
pollination
Two identical daughter cells
Mitosis
True or False: Asexual reproduction does not involve the fusion of gametes.
True
A reproductive cell that unites with another to form a new organism.
Gamete
Multiple choice: Which of the following is NOT a type of asexual reproduction? A) Budding B) Fragmentation C) Cross-fertilization
C) Cross-fertilization
Fill in the blank: The unit of heredity that is transferred from a parent to offspring is called a __________.
gene
What is the significance of the fossil record in understanding the perpetuation of life?
It provides evidence of past life forms and their evolution over time.
True or False: Extinction has no impact on the perpetuation of life.
False
Four genetically diverse gametes/non-identical daughter cells
Meiosis
Multiple choice: Which of the following is a form of reproductive isolation? A) Temporal isolation B) Behavioral isolation C) Both A and B
C) Both A and B
Fill in the blank: The process by which a single organism can reproduce without the involvement of another is known as __________ reproduction.
asexual
What is the primary advantage of genetic variation in a population?
It increases the chances of survival and adaptation to changing environments.
Refers to the parent organism breaking into fragments and each fragment is capable of developing into a new organism.
Fragmentation
_________ is a type of asexual reproduction wherein cells divides to produced two identical cells. Each of these two cells has the potential to grow to the size of the original cells.
Binary fission
Condensation of DNA;
Nucleus disappears
Prophase
Alignment of chromosomes in the middle of the cell.
Metaphase
The chromatids would go to each post of the cell
Anaphase
Cell will began to split nucleus will form for each cell
Telophase
Cytoplasm of each cell will separate
Cytokinesis
Daughter cells/individual is identical to the parent
Asexual
_______ reproduction refers to the formation of an outgrowth (or bud) from an organism.
Budding
The offspring develops from a female gamete even without prior or fertilization by male gamete.
Parthenogenesis
Occurs when one in which the egg cells produced by mitosis do not undergo meiosis.
Apomictic parthenogenesis
The reproductive cell go through meiosis.
Automictic parthenogenesis
How many chromosomes are there?
23 pairs
How many chromatids are there?
46
If there are two chromatids but they’re not combined to each other what is it called?
Sister chromatids
