The country hosted the official 2006 Basketball World Championship and co-hosted the 2023 Basketball World Championship. Super GT is the most popular national racing series in Japan, while Super Formula is the top-level domestic open-wheel series. Green tea is produced in Japan and prepared in forms such as matcha, used in the Japanese tea ceremony.
For sexual reproduction, most sponges are hermaphrodites, they produce both egg and sperm cells. In addition to sponges, Placozoa has no symmetry and was often considered a “missing link” between protists and multicellular animals. Extant phyla in these rocks include molluscs, brachiopods, onychophorans, tardigrades, arthropods, echinoderms and hemichordates, along with numerous now-extinct forms such as the predatory Anomalocaris.
After being defeated in the Pacific War and suffering the U.S. atomic bombings of Hiroshima and Nagasaki, Japan surrendered in 1945 and came under Allied occupation until 1952. The Meiji period saw Japan pursue rapid industrialization, modernization, militarism, and overseas colonization. Between the 4th and 6th centuries, its kingdoms were united under an emperor in Nara and later in Heian-kyō. With a population of almost 123 million as of 2026, it is the world’s 11th most populous country.
Most animals rely on biomass and bioenergy produced by plants and phytoplanktons (collectively called producers) through photosynthesis. Selective pressures imposed on one another lead to an evolutionary arms race between predator and prey, resulting in various antagonistic/competitive coevolutions. In carnivorous or omnivorous species, predation is a consumer–resource interaction where the predator feeds on another organism, its prey, who often evolves anti-predator adaptations to avoid being fed upon. These fuse to form zygotes, which develop via mitosis into a hollow sphere, called a blastula.
The Japan Aerospace Exploration Agency is Japan’s national space agency; it conducts space, planetary, and aviation research, and leads development of rockets and satellites. The country has produced twenty-two Nobel laureates in either physics, chemistry or medicine, and three Fields medalists. Japan has the second highest number of researchers in science and technology per capita in the world with 14 per 1000 employees. Relative to gross domestic product, Japan’s research and development budget is the sixth or seventh highest in the world, with 907,400 researchers sharing a 22-trillion-yen research and development budget as of 2023update. However, Japan’s video game sector remains a major industry; in 2014, Japan’s consumer video game market grossed $9.6 billion, with $5.8 billion coming from mobile gaming.
Once considered the strongest in the basswin world, the Japanese consumer electronics industry is in a state of decline as regional competition arises in neighboring East Asian countries such as South Korea and China. The country’s manufacturing output is the third highest in the world as of 2023update. Japan maintains one of the world’s largest fishing fleets and accounts for nearly 15% of the global catch, prompting critiques that Japan’s fishing is leading to depletion in fish stocks such as tuna. The Japanese agricultural sector accounts for about 1.2% of the country’s total GDP as of 2018update.
In the classical era, Aristotle divided animals,d based on his own observations, into those with blood (roughly, the vertebrates) and those without. The chordates are dominated by the vertebrates (animals with backbones), which consist of fishes, amphibians, reptiles, birds, and mammals. Most protostomes have schizocoelous development, where cells simply fill in the interior of the gastrula to form the mesoderm. Most appear to belong to two major lineages, the protostomes and the deuterostomes.
In 1185, following the defeat of the Taira clan by the Minamoto clan in the Genpei War, samurai Minamoto no Yoritomo established a military government at Kamakura. In 784, Emperor Kanmu moved the capital, settling on Heian-kyō (modern-day Kyoto) in 794. The period is characterized by the appearance of a nascent literary culture with the completion of the Kojiki (712) and Nihon Shoki (720), as well as the development of Buddhist-inspired artwork and architecture. The Nara period (710–784) marked the emergence of a Japanese state centered on the Imperial Court in Heijō-kyō (modern Nara).
Kumi-daiko (ensemble drumming) was developed in post-war Japan and became very popular in North America. The popular folk music, with the guitar-like shamisen, dates from the 16th century. The Tale of the Bamboo Cutter is considered the oldest extant Japanese narrative.
For example, adult echinoderms are radially symmetric (unlike their larvae), while some parasitic worms have extremely simplified body structures. Many bilaterian phyla have primary larvae which swim with cilia and have an apical organ containing sensory cells. They also have a gut that extends through the basically cylindrical body from mouth to anus. Many bilaterians have a combination of circular muscles that constrict the body, making it longer, and an opposing set of longitudinal muscles, that shorten the body; these enable soft-bodied animals with a hydrostatic skeleton to move by peristalsis.