SEG Awards Level 3 Diploma in Zoology (RQF)

Explore how the Earth was formed and how the first living organisms appeared from a primordial chemical environment. The unit traces the major evolutionary milestones that transformed single-celled life into the extraordinary diversity of multicellular organisms we see today. You study the contributions of Lamarck, Darwin, and Wallace to evolutionary thought, examine the mechanism of natural selection in detail, and analyse how heritable traits are passed between generations, establishing the genetic basis of evolution that underpins the rest of the diploma.

Survey the full breadth of the animal kingdom through the lens of taxonomic classification. The unit explains why biologists organise animals into phyla, classes, orders, families, genera, and species, and guides you through the major invertebrate phyla — Porifera, Cnidaria, Platyhelminthes, Annelida, Mollusca, Echinodermata, and Arthropoda — as well as the Phylum Chordata and the evolutionary radiation of the vertebrates. You develop the ability to identify key morphological and physiological features that distinguish each major group.

Examine the evolutionary history of the class Mammalia from their synapsid ancestors through the Mesozoic to their post-extinction radiation as the dominant vertebrates of the modern world. The unit covers the three sub-classes — Monotremata, Marsupialia, and Placentalia — exploring the features unique to each, including reproductive strategies, thermoregulation, dentition patterns, and the neural complexity that characterises mammals. You analyse why specific mammalian adaptations proved so successful across such diverse ecological niches.

Investigate the organ systems that allow multicellular animals to survive, reproduce, and respond to their environments. The unit covers the integumentary, skeletal, muscular, nervous, endocrine, cardiovascular, respiratory, digestive, excretory, and reproductive systems, examining how each is structured to fulfil its function and how they interact as an integrated whole. A central theme is homeostasis — the mechanisms by which animals regulate their internal environment — with thermoregulation used as a detailed worked example of negative feedback in action.

Analyse why heterotrophy is the defining metabolic strategy of all animals and how the requirement to consume organic matter shapes morphology, behaviour, and ecology. The unit classifies animals by feeding strategy — herbivory, carnivory, omnivory, and filter-feeding — and examines the anatomical and physiological adaptations associated with each. You explore how herbivores have evolved complex digestive systems to extract nutrition from plant matter, how predators have developed sensory and locomotor adaptations for hunting, and how filter-feeders exploit nutrient-rich aquatic environments.

Study the range of reproductive strategies employed by animals and examine why sexual reproduction, despite its energetic cost, has become the dominant mode of reproduction in most animal taxa. The unit covers asexual versus sexual reproduction, internal versus external fertilisation, oviparity, viviparity, and ovoviviparity, and the selective pressures that favour each strategy in different ecological contexts. Life history theory is introduced — the trade-offs between reproductive output, offspring survival, and parental investment — and illustrated across a range of invertebrate and vertebrate examples.

Explore the scientific study of animal behaviour from its ethological foundations to the modern field of behavioural ecology. The unit covers innate and learned behaviours, fixed action patterns, habituation, conditioning, imprinting, and social learning, and examines how behaviours are shaped by natural selection to maximise fitness. You analyse communication systems across taxa — visual, acoustic, chemical, and tactile signals — and study the evolutionary dynamics of cooperation, altruism, and competition. The unit also introduces the concept of animal cognition and its implications for understanding intelligence and sentience.

Examine the relationships between animals and their physical environments at the level of the individual organism, population, community, and ecosystem. The unit covers the concept of the ecological niche, the factors that determine habitat suitability, population dynamics and carrying capacity, predator–prey interactions, interspecific competition, and the structure of food webs. You analyse how energy flows through ecosystems and how nutrients cycle between biotic and abiotic compartments, providing the ecological framework needed to understand conservation challenges.

Investigate the mechanisms that drive animal movement on scales ranging from daily foraging routes to intercontinental migrations. The unit examines the navigational tools used by migratory animals — celestial cues, magnetic sense, olfaction, and landmarks — and explores the evolutionary drivers of migration as a life history strategy. You also study the broader patterns of animal distribution at biogeographical scales, considering how plate tectonics, climate history, and dispersal ability have shaped the current global distribution of major animal groups.

Analyse how natural selection has equipped animals to survive in the most challenging environments on Earth — polar regions, deep oceans, hot and cold deserts, high altitudes, and cave systems. The unit covers the physiological, morphological, and behavioural adaptations that allow survival where temperature, water, oxygen, light, or food are in extreme deficit. Case studies include polar bears, camels, deep-sea fish, cave salamanders, and alpine ungulates, demonstrating the extraordinary range of solutions that evolution has produced to environmental extremes.

Examine the contemporary science of protecting biodiversity in the face of habitat destruction, climate change, invasive species, overexploitation, and pollution. The unit introduces the concept of biodiversity at genetic, species, and ecosystem levels, and examines the methods used to measure and monitor it. You study the principles of protected area design, ex-situ conservation, captive breeding programmes, and species reintroduction, and analyse real-world case studies including the recovery of the European bison, the Arabian oryx, and UK red kite populations to evaluate the effectiveness of conservation interventions.

Reflect on the complex and evolving relationship between humans and other animals, from domestication and agriculture to companion animals, wildlife tourism, and the use of animals in research. The unit examines the ethical frameworks used to evaluate how humans treat animals, including utilitarian, rights-based, and relational approaches, and considers how changing societal attitudes are influencing legislation, farming practices, and conservation policy. You also explore the concept of One Health — the interconnection between human, animal, and environmental wellbeing — as a lens for understanding 21st-century challenges.