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Questions and Answers

What is one advantage of sexual reproduction compared to asexual reproduction?

  • It allows for organism cloning.
  • It leads to greater genetic variation. (correct)
  • It requires less time for offspring development.
  • It necessitates less energy expenditure.

Which of the following pairs are organisms that reproduce sexually?

  • Bacteria and Roses
  • Fungi and Butterflies
  • Chickens and Sunflowers
  • Iguanas and Lobsters (correct)

How does internal fertilization differ from external fertilization?

  • Internal fertilization involves sperm fertilizing eggs outside the female.
  • Internal fertilization occurs in the water.
  • External fertilization typically involves species like fish and amphibians. (correct)
  • External fertilization happens within the female.

Which statement is true regarding flowers as reproductive organs?

<p>Some flowers can have both male and female reproductive organs. (D)</p> Signup and view all the answers

What is NOT a typical characteristic of asexual reproduction?

<p>It requires a mate for reproduction. (D)</p> Signup and view all the answers

What is a primary characteristic of asexual reproduction?

<p>Produces identical offspring (C)</p> Signup and view all the answers

Which of the following organisms primarily reproduces asexually?

<p>Bacteria (C)</p> Signup and view all the answers

What term describes the process where an organism divides into two identical cells?

<p>Binary Fission (C)</p> Signup and view all the answers

In sexual reproduction, which of the following statements is true?

<p>Involves genetic material from two parents (C)</p> Signup and view all the answers

What advantage does asexual reproduction have over sexual reproduction?

<p>Faster population growth (D)</p> Signup and view all the answers

Which of the following organisms does NOT reproduce asexually?

<p>Amphibians (D)</p> Signup and view all the answers

What is budding in terms of reproductive strategy?

<p>Outgrowth from a parent organism (A)</p> Signup and view all the answers

Which statement about spores is true?

<p>They are airborne cells released from a parent (D)</p> Signup and view all the answers

What is regeneration in the context of asexual reproduction?

<p>The growth of a new body part after a part has been lost (B)</p> Signup and view all the answers

What characterizes fragmentation as a means of asexual reproduction?

<p>A parent breaks into parts that regenerate into new individuals (B)</p> Signup and view all the answers

Which of the following is an example of a method of vegetative propagation in plants?

<p>Plant cuttings (A)</p> Signup and view all the answers

What is the primary result of the mitosis process in asexual reproduction?

<p>An exact copy of the parent cell (A)</p> Signup and view all the answers

Which organism is NOT known to reproduce asexually?

<p>Human (A)</p> Signup and view all the answers

What is a disadvantage of asexual reproduction?

<p>It can lead to offspring inheriting genetic diseases from the parent (D)</p> Signup and view all the answers

What type of reproduction involves the combination of genetic material from two parents?

<p>Sexual reproduction (B)</p> Signup and view all the answers

Which of the following characteristics is associated with asexual reproduction?

<p>Involves only one parent (D)</p> Signup and view all the answers

Flashcards

Asexual Reproduction

A type of reproduction that requires only one parent, resulting in offspring that are genetically identical to the parent.

Sexual Reproduction

A type of reproduction that requires two parents, resulting in offspring that are genetically different from both parents.

Binary Fission

A type of asexual reproduction in which a single-celled organism divides into two identical cells.

Budding (Asexual)

A form of asexual reproduction in which a new organism grows from an outgrowth of a parent organism.

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Spore Reproduction

A form of asexual reproduction in which an organism produces spores, which can develop into new organisms.

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Identical offspring

Offspring that have the same genetic makeup as the parent organism in asexual reproduction.

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Different offspring

Offspring that are not genetically identical to the parent in Sexual reproduction.

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One parent

A single parent is involved in asexual reproduction methods such as binary fission, budding, and spore reproduction.

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Why is sexual reproduction more complex?

Sexual reproduction requires finding a mate, expends more cellular energy, and takes longer for offspring development.

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What are flower's role?

Flowers are the reproductive organs of plants, containing either male or female parts, or both.

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What are examples of organisms that reproduce sexually?

Examples include animals like chickens, iguanas, lobsters, sharks, and humans, as well as plants like sunflowers and roses.

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How does internal fertilization occur?

Internal fertilization happens when the egg is fertilized by sperm inside the female. This is common in mammals, birds, reptiles, insects, and spiders.

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How does external fertilization occur?

External fertilization occurs when the egg is fertilized by sperm outside the female. This is typical of fish and some amphibians. Plants and fungi use pollen and spores for external fertilization.

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Regeneration

A form of asexual reproduction where a broken-off body part is regrown by the organism.

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Fragmentation

Asexual reproduction where a parent organism breaks into pieces, each capable of becoming a new individual.

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Vegetative Propagation

A type of asexual reproduction in plants where new individuals grow from parts of the parent plant like stems, roots, or leaves.

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Mitosis

The process by which animal cells divide asexually, creating two identical daughter cells.

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Hydra

An example of an organism that reproduces asexually through budding.

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Sea Star

An organism known for its ability to reproduce asexually through regeneration.

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Meiosis

Cell division process involved in sexual reproduction where cells divide twice, producing gametes (sperm and egg) with half the genetic information.

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Genetic Variation

The diversity in genetic makeup among individuals within a population, often resulting from sexual reproduction.

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Study Notes

Asexual Reproduction

  • Requires only one parent
  • Offspring are genetically identical to the parent (clones)
  • Faster and uses less energy than sexual reproduction
  • Common in unicellular organisms
  • Several methods exist, including binary fission, budding, fragmentation, plant cuttings, and spore formation.

Sexual Reproduction

  • Involves two parents
  • Offspring have a mixture of genetic material from both parents, leading to variation
  • Slower process and requires more energy
  • Common in multicellular organisms.
  • Involves meiosis and fertilization.
  • Methods include internal and external fertilization

Asexual Reproduction: Specific Methods

  • Binary fission: A single cell divides into two identical cells. Common in bacteria and protists.
  • Budding: A new organism develops as an outgrowth from the parent organism. Occurs in some invertebrates like hydra.
  • Fragmentation: A parent organism breaks into fragments, each of which develops into a new organism. Found in some invertebrates like starfish.
  • Spore formation: Specialized cells that develop into new organisms. Common in fungi, algae, and some plants.
  • Vegetative propagation: Asexual reproduction in plants using stems, roots, or leaves.

Sexual Reproduction: Specific Methods

  • Internal fertilization: Fertilization occurs inside the female's body. Common in mammals, birds, reptiles.
  • External fertilization: Fertilization occurs outside the female's body. Common in fish and amphibians.
  • Meiosis: The process of cell division that produces reproductive cells (gametes) with half the number of chromosomes as the parent cell. Essential for sexual reproduction.

Advantages of Asexual Reproduction

  • Faster reproduction rate
  • Energy efficient
  • Produces more offspring
  • No need to find a mate

Advantages of Sexual Reproduction

  • Genetic variation in offspring
  • Organisms are more resilient to environmental changes because of variations.
  • Increases adaptability and survival rates

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Asexual vs. Sexual Reproduction PDF

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