Zoogeographical Realms – Definition, Meaning and Types
What is Zoogeographical Realms? Types of Zoogeographical Realms 1. Palaearctic Realm 2. Nearctic Realm 3. Neo-tropical Realm 4. Ethiopian Realm 5. Oriental Realm 6. Australian Realm FAQ
Zoogeography – Plate tectonic and Continental drift theory
Continental Drift Theory Different Stages of Continental Drift Theory Different Forces Responsible for Continental Drift Note: It is important to mention that these factors were later found to be insufficient to fully explain continent drifting, which led to criticism of Wegener’s theory. Evidence Supporting Continental Drift Theory Evidence Supporting Continental Drift Theory: Criticisms of Continental … Read more
Urochordata – Definition, Characteristics, and Classification
What is Urochordata? Characteristics of Urochordata The following characteristics distinguish Urochordata from the other subphylums of Chordata: Larval Characteristics During the larval stage of Urochordata, known as the ascidian tadpole larva, several characteristic features can be observed. These features contribute to their chordate nature and play important roles in their development and behavior. These larval … Read more
Cephalochordate – Characteristics, Classification
Classification of Cephalochordata Kingdom Animalia Superphylum Deuterostomia Phylum Chordata Subphylum Cephalochordata Characteristics of Cephalochordate Morphology of Cephalochordate Feeding of Cephalochordate Systematic Resume The systematic resume of the subphylum Cephalochordata provides an overview of the classification and distribution of the two genera within the family Brachiostomatidae. The subphylum Cephalochordata consists of a single family known as … Read more
Retrogressive Metamorphosis in Urochordates
Retrogressive Metamorphosis Retrogressive metamorphosis refers to a specific type of metamorphosis observed in ascidians or tunicates, which are a type of urochordate. Metamorphosis is a process in which an organism undergoes a profound change in form during post-embryonic development, typically transitioning from a larval stage to an adult stage. In retrogressive metamorphosis, the larva possesses … Read more
Chondrichthyes – Characteristics, Classification & Examples
Kingdom Animalia Phylum Chordata Subphylum Vertebrata Division Gnathostomata Superclass Pisces Class Chondrichthyes Characteristics of Chondrichthyes Chondrichthyes, also known as Sharks, Skates, and Rays, exhibit a range of fascinating characteristics. Here are some key features of these jawed fishes: These characteristics contribute to the unique adaptations and biological traits of Chondrichthyes, making them a diverse and … Read more
Osteichthyes – Characteristics, Classification and Examples
Kingdom Animalia Phylum Chordata Subphylum Vertebrata Division Gnathostomata Superclass Pisces Class Osteichthyes General Characteristics of Osteichthyes Osteichthyes, or bony fishes, exhibit a range of general characteristics that define this diverse class of vertebrates: These general characteristics contribute to the diversity and adaptability of bony fishes, allowing them to thrive in various aquatic habitats and play … Read more
Parental Care in Fishes – Different Methods with Examples
Different Types Of Parental Care In Fishes Include 1. Deposition of Eggs Into Self-Made Nest Certain fish species exhibit the behavior of preparing nests to ensure the safe deposition and protection of their eggs, as well as the development of their young ones. The construction of these nests involves the participation of either males or … Read more
Regeneration – Definition, Types, Mechanism, Examples
What is Regeneration? Definition of Regeneration Regeneration is the natural process by which organisms restore, repair, or replace lost or damaged body parts through the growth and differentiation of specialized cells, often known as stem cells. Types of Regeneration Regeneration, a pivotal biological process, can be classified into distinct types based on the underlying mechanisms … Read more
Metamorphosis – Definition, Types, Mechanism, Importance, Examples
What is Metamorphosis? Metamorphosis is a biological process characterized by a profound transformation in the form, structure, or physiology of an organism as it progresses through distinct stages of its life cycle. It involves significant changes that are often irreversible and result in the emergence of a new developmental stage or life form. Stages of … Read more