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Science > Reproduction In Organisms > Flashcards

Reproduction In Organisms Flashcards

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Biology 101 flashcards
1
Q

What is reproduction?

A

Reproduction is the biological process by which new individual organisms are produced.

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2
Q

What are the two main types of reproduction?

A

The two main types of reproduction are asexual reproduction and sexual reproduction.

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3
Q

True or False: Asexual reproduction involves the fusion of gametes.

A

False

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4
Q

What is asexual reproduction?

A

Asexual reproduction is a mode of reproduction that does not involve the fusion of gametes and results in offspring genetically identical to the parent.

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5
Q

Name one advantage of asexual reproduction.

A

One advantage of asexual reproduction is that it allows for rapid population growth.

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6
Q

What is binary fission?

A

Binary fission is a form of asexual reproduction where a single organism divides into two identical daughter cells.

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7
Q

Fill in the blank: In budding, a new organism develops from a ______ of the parent organism.

A

bud

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8
Q

True or False: Sexual reproduction results in genetically diverse offspring.

A

True

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9
Q

What is the role of gametes in sexual reproduction?

A

Gametes are specialized reproductive cells that fuse during fertilization to form a new organism.

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10
Q

What is fertilization?

A

Fertilization is the process in which male and female gametes unite to form a zygote.

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11
Q

Name the two types of gametes.

A

Sperm and egg.

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12
Q

What is external fertilization?

A

External fertilization is the process where fertilization occurs outside the female’s body, typically in aquatic environments.

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13
Q

What is internal fertilization?

A

Internal fertilization is the process where fertilization occurs inside the female’s body.

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14
Q

Fill in the blank: Organisms that reproduce sexually often have ______ that help attract mates.

A

secondary sexual characteristics

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15
Q

True or False: All organisms reproduce sexually.

A

False

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16
Q

What is the significance of genetic variation?

A

Genetic variation is important for the evolution and adaptability of a species.

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17
Q

What is a zygote?

A

A zygote is the fertilized egg formed by the union of sperm and egg.

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18
Q

What is a clone?

A

A clone is an organism that is genetically identical to its parent.

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19
Q

Name one method of asexual reproduction in plants.

A

Vegetative propagation.

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20
Q

What is regeneration?

A

Regeneration is a form of asexual reproduction where an organism can regrow lost body parts.

21
Q

Fill in the blank: In sexual reproduction, offspring inherit ______ from both parents.

A

genetic material

22
Q

What is parthenogenesis?

A

Parthenogenesis is a form of asexual reproduction where an egg develops into an organism without fertilization.

23
Q

What role do pheromones play in reproduction?

A

Pheromones are chemical signals that can attract mates and influence reproductive behavior.

24
Q

True or False: All animals undergo metamorphosis during their reproductive cycle.

A

False

25
Q

What is the difference between oviparous and viviparous organisms?

A

Oviparous organisms lay eggs, while viviparous organisms give birth to live young.

26
Q

What is the purpose of courtship behavior?

A

Courtship behavior is used to attract a mate and ensure reproductive success.

27
Q

Fill in the blank: In some species, males may compete for ______ to secure mating opportunities.

A

females

28
Q

What is the term for the number of offspring produced in a single reproductive event?

A

Fecundity.

29
Q

What is the term for an organism that can reproduce both sexually and asexually?

A

Facultative hermaphrodite.

30
Q

Fill in the blank: The process of ______ involves the development of an embryo inside the mother’s body.

A

gestation

31
Q

What is the term for the genetic makeup of an organism?

A

Genotype.

32
Q

What is a phenotype?

A

A phenotype is the observable physical or biochemical characteristics of an organism.

33
Q

True or False: Sexual reproduction always requires two parents.

A

False

34
Q

What is the significance of the reproductive cycle?

A

The reproductive cycle ensures the continuation of a species by regulating reproductive events.

35
Q

Fill in the blank: The ______ phase is a part of the reproductive cycle where organisms prepare for mating.

A

pre-mating

36
Q

What is the role of the placenta in viviparous organisms?

A

The placenta provides nutrients and oxygen to the developing embryo.

37
Q

What is sexual dimorphism?

A

Sexual dimorphism refers to the differences in appearance between males and females of the same species.

38
Q

Fill in the blank: In some species, females may choose mates based on ______ traits.

A

ornamental

39
Q

What is the function of spermatogenesis?

A

Spermatogenesis is the process of producing sperm cells.

40
Q

What is oogenesis?

A

Oogenesis is the process of producing egg cells.

41
Q

True or False: All organisms have a fixed reproductive strategy.

A

False

42
Q

What is the term for a reproductive strategy that maximizes the number of offspring?

A

r-strategy.

43
Q

What is the term for a reproductive strategy that focuses on raising fewer offspring with high parental investment?

A

K-strategy.

44
Q

What is the significance of seasonality in reproduction?

A

Seasonality can affect reproductive timing and success based on environmental conditions.

45
Q

Fill in the blank: The presence of ______ can influence the reproductive cycles of many organisms.

A

hormones

46
Q

What is the term for organisms that can change their sex during their lifetime?

A

Sequential hermaphrodites.

47
Q

What is the role of parental care in reproduction?

A

Parental care increases the survival rate of offspring after birth.

48
Q

True or False: Reproductive isolation can lead to the formation of new species.

A

True

49
Q

What is the process of speciation?

A

Speciation is the process by which new and distinct species evolve.

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