Reproduction In Organisms Flashcards
What is reproduction?
Reproduction is the biological process by which new individual organisms are produced.
What are the two main types of reproduction?
The two main types of reproduction are asexual reproduction and sexual reproduction.
True or False: Asexual reproduction involves the fusion of gametes.
False
What is asexual reproduction?
Asexual reproduction is a mode of reproduction that does not involve the fusion of gametes and results in offspring genetically identical to the parent.
Name one advantage of asexual reproduction.
One advantage of asexual reproduction is that it allows for rapid population growth.
What is binary fission?
Binary fission is a form of asexual reproduction where a single organism divides into two identical daughter cells.
Fill in the blank: In budding, a new organism develops from a ______ of the parent organism.
bud
True or False: Sexual reproduction results in genetically diverse offspring.
True
What is the role of gametes in sexual reproduction?
Gametes are specialized reproductive cells that fuse during fertilization to form a new organism.
What is fertilization?
Fertilization is the process in which male and female gametes unite to form a zygote.
Name the two types of gametes.
Sperm and egg.
What is external fertilization?
External fertilization is the process where fertilization occurs outside the female’s body, typically in aquatic environments.
What is internal fertilization?
Internal fertilization is the process where fertilization occurs inside the female’s body.
Fill in the blank: Organisms that reproduce sexually often have ______ that help attract mates.
secondary sexual characteristics
True or False: All organisms reproduce sexually.
False
What is the significance of genetic variation?
Genetic variation is important for the evolution and adaptability of a species.
What is a zygote?
A zygote is the fertilized egg formed by the union of sperm and egg.
What is a clone?
A clone is an organism that is genetically identical to its parent.
Name one method of asexual reproduction in plants.
Vegetative propagation.
What is regeneration?
Regeneration is a form of asexual reproduction where an organism can regrow lost body parts.
Fill in the blank: In sexual reproduction, offspring inherit ______ from both parents.
genetic material
What is parthenogenesis?
Parthenogenesis is a form of asexual reproduction where an egg develops into an organism without fertilization.
What role do pheromones play in reproduction?
Pheromones are chemical signals that can attract mates and influence reproductive behavior.
True or False: All animals undergo metamorphosis during their reproductive cycle.
False
What is the difference between oviparous and viviparous organisms?
Oviparous organisms lay eggs, while viviparous organisms give birth to live young.
What is the purpose of courtship behavior?
Courtship behavior is used to attract a mate and ensure reproductive success.
Fill in the blank: In some species, males may compete for ______ to secure mating opportunities.
females
What is the term for the number of offspring produced in a single reproductive event?
Fecundity.
What is the term for an organism that can reproduce both sexually and asexually?
Facultative hermaphrodite.
Fill in the blank: The process of ______ involves the development of an embryo inside the mother’s body.
gestation
What is the term for the genetic makeup of an organism?
Genotype.
What is a phenotype?
A phenotype is the observable physical or biochemical characteristics of an organism.
True or False: Sexual reproduction always requires two parents.
False
What is the significance of the reproductive cycle?
The reproductive cycle ensures the continuation of a species by regulating reproductive events.
Fill in the blank: The ______ phase is a part of the reproductive cycle where organisms prepare for mating.
pre-mating
What is the role of the placenta in viviparous organisms?
The placenta provides nutrients and oxygen to the developing embryo.
What is sexual dimorphism?
Sexual dimorphism refers to the differences in appearance between males and females of the same species.
Fill in the blank: In some species, females may choose mates based on ______ traits.
ornamental
What is the function of spermatogenesis?
Spermatogenesis is the process of producing sperm cells.
What is oogenesis?
Oogenesis is the process of producing egg cells.
True or False: All organisms have a fixed reproductive strategy.
False
What is the term for a reproductive strategy that maximizes the number of offspring?
r-strategy.
What is the term for a reproductive strategy that focuses on raising fewer offspring with high parental investment?
K-strategy.
What is the significance of seasonality in reproduction?
Seasonality can affect reproductive timing and success based on environmental conditions.
Fill in the blank: The presence of ______ can influence the reproductive cycles of many organisms.
hormones
What is the term for organisms that can change their sex during their lifetime?
Sequential hermaphrodites.
What is the role of parental care in reproduction?
Parental care increases the survival rate of offspring after birth.
True or False: Reproductive isolation can lead to the formation of new species.
True
What is the process of speciation?
Speciation is the process by which new and distinct species evolve.
