Biodiversity and Classification — NDA Biology

Biodiversity and Classification is pure recall — 12 PYQs across 2018–2026, every one EASY or MODERATE, and not a single HARD question. There is nothing to derive here; the whole chapter is about knowing the right classification cold: which kingdom an organism belongs to, which phylum, which plant group. The chapter teaches in three movements: (1) Foundations of classification — the taxonomic hierarchy (Kingdom down to Species), the rules of binomial nomenclature, and Whittaker's five-kingdom system; (2) Plant kingdom — the progression from algae through bryophytes, pteridophytes and gymnosperms to flowering angiosperms, keyed on vascular tissue and seed type; (3) Animal kingdom — the major invertebrate phyla (Porifera, Coelenterata, Arthropoda, etc.) and the vertebrate classes (Pisces up to Mammalia). Almost every concept is a reference table — memorise the table, win the marks. The recurring trap is a swapped label: a sponge called a coelenterate, a gymnosperm called an angiosperm, a fern called a bryophyte.