996 past contests
Topic 53 · One of mendel's four basic concepts: every organism inherits two alleles per trait
Topic 53 · One of mendel's four basic concepts: paired alleles are often dominant and recessive
Topic 53 · One of mendel's four basic concepts: allele pairs separate during meiotic gamete formation
Topic 8 · Riddle: chlorenchyma, a living photosynthetic plant tissue
Topic 53 · One of mendel's four basic concepts: a gene exists as more than one allele
Topic 3 · True or false: minimum peristalsis occurs in the duodenum
Topic 3 · True or false: minimum peristalsis occurs in the rectum
Topic 3 · True or false: minimum peristalsis occurs in the oesophagus
Topic 39 · True or false: algae blooms impart distinct colors to water bodies
Topic 39 · True or false: sewage-decomposing microorganisms deplete oxygen and can kill aquatic organisms
Topic 39 · True or false: toxic wastewater substances decrease at successive trophic levels
Topic 2 · Microvilli are microscopic membrane protrusions on cell surfaces
Topic 12 · Vermicomposting uses earthworms to degrade organic waste
Topic 45 · Gibberellin increases sugarcane stem length
Topic 41 · A protoepiphyte depends heavily on its host with minimal structural adaptation
Topic 41 · A holoepiphyte completes its life cycle without touching the ground
Topic 41 · A hemiepiphyte later reaches the ground with descending roots
Topic 9 · The human spine has five sections, one of which is the cervical spine
Topic 12 · Riddle: ecology, the study of organism interactions named by ernst haeckel in 1866
Topic 45 · True or false: gibberellins promote germination via letting water through the hard seed coat