Definition: A clear, colorless liquid with a lemon-like smell, used in perfumes and as a flavoring agent. It can be obtained from citronella oil or made in a lab.

Example: Citronellal is often used in candles to repel insects due to its strong scent.

Definition: A type of amino acid that is found in certain foods like watermelon and plays a role in the body's production of another amino acid called arginine.

Example: Athletes often take citrulline supplements to help improve their performance.

Definition: A group of living things that are related because they come from a common ancestor and share certain features.

Example: The biologist studied a clade of reptiles that evolved from a common ancestor.

Definition: A person who categorizes living things based on their evolutionary relationships and shared characteristics.

Example: The cladist presented a new classification system for the species at the conference.

Definition: Relating to a method of classifying organisms based on their evolutionary relationships.

Example: The cladistic approach helps scientists understand the connections between different species.

Definition: In a way that relates to the classification of organisms based on common ancestry and evolutionary relationships.

Example: The species were grouped cladistically to show their evolutionary connections.

Definition: A method of classifying living things based on their evolutionary relationships and history.

Example: Cladistics helps scientists understand how different species are related to each other.

Definition: Relating to a group of small aquatic crustaceans known as Cladocera, which are often found in freshwater environments.

Example: The cladoceran species are important for the aquatic food web.

Definition: A type of small, mostly freshwater crustacean that belongs to the order Cladocera, commonly known as water fleas.

Example: Cladocerans play an important role in freshwater ecosystems as they are a food source for many fish.

Definition: The process of evolutionary change where new species branch off from a common ancestor, leading to diversification in life forms.

Example: Cladogenesis is an important concept in understanding how species evolve and diversify over time.

Definition: A diagram that looks like a tree and shows how different species are related to each other based on their evolutionary history.

Example: The scientist used a cladogram to explain the evolutionary relationships between the different species.