Biology Classification Quiz

A system of classifying organisms based on shared characteristics, organized in a hierarchy from broadest to most specific.

The broadest category in the taxonomic hierarchy, containing multiple kingdoms.

A large group of related organisms that share fundamental characteristics. Examples include Bacteria, Archaea, and Eukarya.

A group of related classes within a kingdom, often sharing anatomical features.

A group of related orders within a phylum, sharing common characteristics.

A group of related families within a class, sharing similar characteristics.

A group of related genera within an order, sharing similar traits.

A group of closely related species that can interbreed, sharing similar physical and functional characteristics.

A type of asexual reproduction where a parent organism splits into two or more smaller fragments, each capable of growing into a complete organism.

A type of asexual reproduction where a parent organism produces microscopic reproductive units called spores within a spore sac. When the sac bursts, these spores are released and can develop into new organisms under favorable conditions.

A type of asexual reproduction where a new organism grows from an outgrowth or bud on the parent organism. The bud eventually detaches and becomes independent.

A type of asexual reproduction in which new plants are produced from the parts of an old plant, like stems, leaves, or roots, without any involvement of flowers or seeds.

A type of asexual reproduction where a single parent cell divides into two identical daughter cells.

A type of green algae that reproduces asexually through fragmentation.

A type of bacteria that can reproduce asexually through binary fission.

Organisms are classified into six kingdoms based on their characteristics, such as cell structure, mode of nutrition, and reproduction.

The most primitive kingdom, consisting of single-celled organisms that live in extreme environments, such as hot springs or salty lakes.

The most diverse kingdom, with a wide range of single-celled organisms, like bacteria and cyanobacteria, that play crucial roles in various ecological processes.

A kingdom of single-celled eukaryotic organisms, exhibiting a vast diversity of forms and lifestyles, encompassing algae, protozoa, and slime molds.

A kingdom of multicellular eukaryotic organisms that obtain nutrients by absorbing organic matter from their surroundings, including mushrooms, molds, and yeasts.

A kingdom of multicellular eukaryotic organisms that produce their own food through photosynthesis, including trees, flowers, and mosses.

A kingdom of multicellular eukaryotic organisms that rely on other organisms for food, including animals, insects, and humans.

Non-cellular entities that are not considered part of the six kingdoms of life due to their unique structure and replication mechanisms.

The differences between Archaebacteria and Eubacteria are primarily based on their metabolism and genetic composition.

Prokaryotic organisms lack a nucleus, while eukaryotic organisms have a nucleus enclosed by a membrane.

The study of how traits are passed from one generation to the next, including variations in these traits.

A distinctive feature of an organism that is passed down from parents to offspring.

The differences in traits observed within a population.

An allele that expresses itself even in the presence of a different allele for the same trait.

An allele that only expresses itself in the absence of a dominant allele for the same trait.

A variant form of a gene.

An allele that carries the dominant trait; expressed in the organism's appearance (phenotype).

An allele that carries the recessive trait; only expressed in the phenotype if there is no dominant allele present.

A complete set of chromosomes in a cell, arranged in pairs according to size and shape. It visually represents the organism's genetic makeup.

The number of chromosomes present in a cell of a particular species.

Pairs of chromosomes that have the same size, shape, and carry genes for the same traits. One chromosome comes from the mother and the other from the father.

The specific location of a gene on a chromosome.

The transfer of genetic material from parents to offspring.

The process of cell division that produces two identical daughter cells, each with the same number of chromosomes as the parent cell.

The process where a single male gamete fuses with the egg cell and another with the polar nuclei, leading to the formation of a zygote and endosperm respectively. It's referred to as double fertilization because two fusion events occur simultaneously.

The process of a male gamete (sperm) fusing with the egg cell to create a zygote, the first cell of a new organism.

A cell that contains half the number of chromosomes as a normal body cell, involved in sexual reproduction.

The process of a sperm cell being guided towards the egg cell, facilitated by the synergids, a specialized group of cells in the ovule.

The tissue that stores food materials for the developing embryo, formed by the fusion of a sperm cell with the polar nuclei.

The protective outer layer of the seed, formed from the integuments of the ovule, shielding the embryo from environmental factors.