reproduction in lower forms of animals Flashcards
How does Hydra reproduce asexually?
Hydra reproduces through budding. A bud forms on the parent’s body, grows, and eventually detaches, creating a new, genetically identical offspring.
What are key features of budding in Hydra?
Simple Process: Minimal energy required.
Rapid Growth: Populations expand quickly.
Genetic Clone: Offspring are genetically identical.
How do starfish reproduce through fragmentation?
Starfish can regenerate from a broken arm, and if the fragment contains part of the central disc, it can grow into a new starfish.
How does regeneration occur in starfish?
Arm Breaks Off: Due to injury or predation.
Regeneration Begins: Cells multiply and differentiate.
New Starfish Forms: Complete organism develops.
How does Amoeba reproduce?
Amoeba reproduces through binary fission, where the cell replicates its DNA and splits into two identical daughter cells.
What are the steps in binary fission for an Amoeba?
DNA Replication: Genetic material is copied.
Cell Elongation: The cell stretches.
Division: The cell splits into two identical cells.
How does bread mold reproduce?
Bread mold reproduces via spore formation, where spores are released into the environment and can develop into new organisms under suitable conditions.
What is the process of spore formation in bread mold?
Spore Release: Spores are ejected into the air.
Dispersal: Spores travel through the air.
Germination: Spores land and grow into new organisms.
How do whiptail lizards reproduce?
Whiptail lizards reproduce through parthenogenesis, where females produce offspring from unfertilized eggs.
What are the steps of parthenogenesis in whiptail lizards?
Unfertilized Egg: No male involvement.
Development: Egg develops into offspring.
Offspring: New genetically identical offspring.
How does Paramecium reproduce sexually?
Paramecium reproduces through conjugation, where two cells exchange genetic material, resulting in new genetic combinations.
What are the benefits of conjugation in Paramecium?
Genetic Exchange: Two cells exchange genetic material.
Diversity: New combinations of genes are created.
Adaptation: Increased survival chances.
What environmental factors influence animal reproduction?
Factors like temperature, food availability, and habitat stability can significantly impact animal reproduction.
Why are environmental factors important in animal reproduction?
They influence the success of reproductive processes and can affect species survival, growth, and adaptation.
What is a key advantage of asexual reproduction in animals?
Asexual reproduction allows for rapid population expansion under favorable conditions.
What is a key advantage of sexual reproduction in animals?
Sexual reproduction promotes genetic diversity, which enhances adaptability and survival in changing environments.
What is the ecological role of animal reproduction?
Animal reproduction is vital for ecosystem balance, ensuring species survival and maintaining biodiversity.
What are the advantages of asexual reproduction in lower animals?
Asexual reproduction strategies like budding, fission, and regeneration enable rapid population growth and genetic uniformity.
What is the advantage of sexual reproduction in lower animals?
Sexual reproduction increases genetic diversity, which enhances species’ ability to adapt to environmental changes.
What are key takeaways about reproduction in lower animals?
Asexual reproduction enables rapid population growth.
Sexual reproduction fosters genetic diversity.
Both strategies are essential for species survival and ecological balance.
