Modes of Reproduction and Biological Concepts

Vocabulary flashcards covering reproductive processes, genetic variations, modes of asexual reproduction, binary vs multiple fission, and budding concepts based on the textbook pages.

Reproduction

The process of formation of young ones of a species by the grown-up individuals, where young ones broadly resemble one another and adults of the same species.

Perpetuation of Species

A key importance of reproduction that acts as an answer to death, allowing the indefinite survival of a population over time.

DNA Blueprint

The hereditary information contained within DNA molecules that governs body design and is transferred from parent to progeny as chromosomes.

Variations

Differences in structure, form, function, and behaviour of individuals from the standards of the species, arising from faulty DNA replication or sexual recombination.

Preadaptations

Unexpressed variations within individuals that become beneficial during drastic environmental changes, allowing holders to survive and prevent species extinction.

Organic Evolution

The process of formation of new species, for which genetic variations serve as the essential raw materials.

Asexual Reproduction

A mode of reproduction found in unicellular organisms, simple animals, and plants, taking place through methods such as fission, budding, fragmentation, regeneration, and spore formation.

Binary Fission

A mode of asexual reproduction in mature unicellular organisms where the nucleus elongates and divides, followed by cytoplasmic constriction to form two equal daughter cells, disappearing the parent body.

Paramecium

A unicellular protist commonly known as the Slipper Animalcule that undergoes transverse binary fission.

Leishmania

A Kala-azar-causing protozoan equipped with a whip-like flagellum that reproduces via longitudinal binary fission.

Multiple Fission

A fission mode in which a single unicellular parent nucleus divides repeatedly followed by cytoplasm division to produce numerous uninucleate daughter cells.

Plasmodium

A malarial parasite that reproduces by multiple fission within host cells such as erythrocytes.

Multiple Fission in Plasmodium Diagram

A diagram demonstrating multiple daughter cells produced through nuclear divisions inside a parent cell surrounded by an erythrocyte.

Budding

A method of asexual reproduction where an outgrowth called a bud develops on the parent organism, increases in size, and ultimately detaches as a distinct individual.

Saccharomyces cerevisiae

A unicellular fungus, commonly known as Yeast, used in brewery and baking industries that reproduces via budding.

Torula Stage

A condition in Yeast where multiple buds remain attached in situ on the parent cell and begin producing additional new buds.

Budding in Yeast and Hydra Diagram

An illustration showing the development of a protuberance in unicellular Yeast and the proliferation of reserve stem cells forming a bud with tentacles in multicellular Hydra.