Biology: Classification of Living Organisms

Flashcards for review on the classification of living organisms, focusing on key concepts, definitions, and classifications.

The process of grouping living things is known as __.

classification.

The most important unit of classification is the __.

species.

The process of grouping living things is known as __.

classification.

The most important unit of classification is the __.

species.

A species is defined as a group of organisms that can breed __ with one another.

successfully.

The binomial nomenclature system was developed by __.

Carl Linnaeus.

In binomial nomenclature, the first name represents the __.

genus.

The second name in binomial nomenclature represents the __.

species.

The two kingdoms originally used to classify living organisms were and .

Animalia and Plantae.

The five kingdoms of classification are Monera, Protista, Fungi, __, and __.

Plantae and Animalia.

Organisms in the kingdom __ are prokaryotic and do not have a nucleus.

Monera.

Fungi differ from plants because they cannot make food by __.

photosynthesis.

The simplest land plants are classified in the division __.

Bryophyta.

Fungi feed on dead material and are known as __.

saprotrophs.

Plants are classified into two main groups: and plants.

non-flowering and flowering.

The division of flowering plants that includes maize and grasses is called __.

Monocotyledons.

The division of flowering plants that usually has broad leaves and a network of veins is called __.

Dicotyledons.

Animalia is primarily classified into two main groups: and animals.

vertebrates and invertebrates.

Animals without a backbone are known as __.

invertebrates.

The phylum that includes sponges is known as __.

Porifera.

The category in which all mammals are included is called __.

Chordata.

Organisms that have jointed limbs belong to the phylum __.

Arthropoda.

The spiny-skinned animals are classified in the phylum __.

Echinodermata.

Fish are classified in the class __.

Pisces.

Amphibians are known for their ability to live both and .

in water and on land.

Reptiles are characterized by having skin covered with .

dry skin covered with scales.

The class Aves is characterized by the presence of __.

feathers.

Mammals are distinguished by the presence of __ glands that produce milk.

mammary.

The __ is the basic unit of classification in biological taxonomy.

species.

The scientific name of humans is __.

Homo sapiens.

The group of organisms that can produce their own food through photosynthesis belongs to the kingdom __.

Plantae.

The period when humans took a step back from animal classification was known as __.

Ancient Greece.

The classification system, which categorizes living organisms into taxa, is known as __.

taxonomy.

Taxa are the diverse __ that classify living organisms to bring order.

categories.

The first name in the binomial system is always __, while the second name is __.

capitalized; not capitalized.

A __ key allows for the identification of organisms based on distinct choices.

dichotomous.

To avoid confusion in naming organisms, __ names are utilized.

scientific.

The five classes of vertebrates include Fish, Amphibians, __, __, and __.

Reptiles, Aves, and Mammals.

Bryophytes are a type of plant that does not have __.

vascular tissue.

The plants that produce seeds not enclosed in fruits are known as __.

gymnosperms.

The group of seed-bearing plants that produce flowers are called __.

angiosperms.

The organism that causes malaria is a type of __ called Plasmodium.

protist.

Members of the kingdom __ can be unicellular or multicellular and may be heterotrophic or autotrophic.

Protista.

The fluid that fills the body cavity of nematodes is known as __.

pseudocoelom.

The kingdom __ includes organisms that cannot manufacture their own food and absorb nutrients from dead matter.

Fungi.

Taxonomy is considered a __ science today due to advancements in genetics.

modern.

A significant component of animal classification is based on their __ system.

nervous.