Asexual Reproduction Overview

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Questions and Answers

How does a sea anemone reproduce when the environment is stable?

  • By division (scissiparity) (correct)
  • By forming spores
  • By budding
  • By external fertilization

What is a primary characteristic of the young plant developed from a stolon in strawberries?

  • It is unable to take root in the soil
  • It produces seeds immediately
  • It is genetically different from the parent plant
  • It is identical to the parent plant (correct)

What reproductive method do some plants, like potatoes, utilize?

  • Photosynthesis
  • Asexual reproduction through rhizomes (correct)
  • Symbiotic relationships
  • Pollination by insects

What is a benefit of asexual reproduction in plants like strawberries?

<p>It enables rapid colonization of an area (C)</p> Signup and view all the answers

What typically happens to the young plant at the end of a stolon?

<p>It takes root in the soil (A)</p> Signup and view all the answers

What is the first step in the plant propagation process?

<p>Selection of a tuber with an interesting trait (A)</p> Signup and view all the answers

What method is used to quickly increase the population of paramecia?

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

During which step of plant propagation are new plants grown from a potato bud?

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

Which process is part of vegetative propagation methods for cloning plants?

<p>In vitro culture (D)</p> Signup and view all the answers

What is the purpose of transferring plants to a field in the propagation process?

<p>For growth and harvest (B)</p> Signup and view all the answers

What is a defining characteristic of asexual reproduction?

<p>Does not require a male for offspring production. (A)</p> Signup and view all the answers

How do female stick insects reproduce when unable to find a mate?

<p>By laying unfertilized eggs that develop into new individuals. (A)</p> Signup and view all the answers

What is a common misconception about asexual reproduction?

<p>It requires two organisms to reproduce. (B)</p> Signup and view all the answers

Which of the following statements is true regarding asexual reproduction in stick insects?

<p>Females can reproduce without male fertilization. (C)</p> Signup and view all the answers

What issue do stick insects address by reproducing asexually?

<p>The challenge of finding mate partners. (A)</p> Signup and view all the answers

What is a key advantage of asexual reproduction?

<p>It is faster and more productive. (D)</p> Signup and view all the answers

Which of the following is a disadvantage of asexual reproduction?

<p>It results in uniformity among offspring. (C)</p> Signup and view all the answers

In sexual reproduction, where do the gametes usually unite in animals?

<p>Inside the female organism. (B)</p> Signup and view all the answers

What do offspring produced through asexual reproduction inherit from their parent?

<p>Identical genetic material. (C)</p> Signup and view all the answers

What is the term for the fertilized egg cell produced after the union of gametes?

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

What does a lack of genetic recombination in asexual reproduction imply for evolution?

<p>It is less favorable for evolution. (C)</p> Signup and view all the answers

Which of the following statements is true regarding the participation of the population in asexual reproduction?

<p>The entire population can participate. (D)</p> Signup and view all the answers

What is an essential function of gametes in reproduction?

<p>To carry genetic information. (A)</p> Signup and view all the answers

Flashcards

Sea Anemone Reproduction

Sea anemones can reproduce sexually or asexually via division (scissiparity), creating identical offspring.

Strawberry Plant Reproduction

Strawberry plants reproduce asexually via stolons, where new plants grow from runners on the ground and take root, creating identical clones.

Stolon

A stem that grows horizontally along the ground, enabling a plant like strawberries to create more plants.

Asexual Reproduction

A type of reproduction where offspring are genetically identical to the parent.

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Clone

A genetically identical copy of an organism, created asexually.

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Gametes

Reproductive cells (e.g., sperm and egg in animals, similar structures in plants) that combine during reproduction.

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Fecondation

The union of male and female gametes.

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Zygote

A fertilized egg cell, containing a full set of genetic material.

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Rapid Asexual Reproduction

Asexual reproduction is fast and efficient for producing numerous offspring quickly in stable environments.

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Genetic Recombination

The process where genes from each parent combine creating offspring with varied traits.

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Uniform Offspring

Offspring that are virtually identical to the parent in asexual reproduction.

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Vegetative Propagation

A method used by humans to create genetically identical copies (clones) of plants using plant parts like stems or buds.

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In Vitro Culture

Growing plant cells, tissues, or organs in a laboratory setting using nutrient-rich media.

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Paramecium Reproduction

Paramecia, single-celled organisms, reproduce asexually through simple division, creating two identical daughter cells.

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Plant Propagation Process

A series of steps involved in creating new plants from existing plant material, typically using vegetative propagation methods.

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Why Asexual Reproduction?

Asexual reproduction allows organisms to reproduce quickly without needing a mate. This is advantageous in environments where finding a partner is difficult or where resources are limited.

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Unfertilized Egg

An egg cell that has not been fertilized by a sperm cell. In some cases, these eggs can develop into new individuals asexually.

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Stick Insect Reproduction

Stick insects can reproduce both sexually and asexually. They often use asexual reproduction, laying unfertilized eggs that develop into clones.

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No New Combinations

Asexual reproduction results in offspring that are genetically identical to the parent. This means there are no new combinations of traits, only copies of the parent's genes.

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Study Notes

Asexual Reproduction

  • Asexual reproduction is a form of reproduction where a single organism or cell makes a genetically identical copy of itself.
  • This method is rapid and efficient, but it does not increase genetic diversity.
  • Asexual reproduction can occur in various ways, including budding, fragmentation, vegetative propagation, and spore formation.
  • Examples of organisms that reproduce asexually include sea anemones, some plants, and certain types of bacteria.
  • This process is advantageous when the environment is stable because offspring are identical to the parent, meaning that they are well-suited to the environment.
  • However, if the environment changes, the lack of genetic diversity can be disadvantageous

Stolon reproduction in Strawberries

  • Strawberries reproduce asexually using stolons, which are above-ground stems.
  • New strawberry plants develop at the end of these stolons.
  • The new plants are genetically identical to the parent plant.
  • This method allows strawberry plants to rapidly colonize an area.

Rhizomes and Tubers

  • Other plants reproduce asexually via rhizomes which are underground stems.
  • An example is potato or tubers.

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