Science and Nature General Knowledge Quiz

Quinine (from cinchona bark), Tannin (from various tree barks), and Cinnamon (from cinnamon tree bark) are all obtained from tree bark. Bhang is obtained from the leaves and flowers of the Cannabis plant, not from any tree bark.

Triticale is the first man-made cereal, created by crossing wheat and rye in the late 19th century. It combines the yield potential and grain quality of wheat with the disease resistance and hardiness of rye. Wheat, rice, and ragi are all natural cereals that evolved through domestication, not artificial hybridization.

Rayon is not a natural fibre - it is a semi-synthetic fibre produced from cellulose through extensive chemical processing. Silk, jute, and coir are all natural fibres obtained directly from animals or plants without chemical modification. Rayon is often called 'artificial silk' because it mimics silk's properties but is man-made.

Redwood (Sequoia sempervirens) is the tallest tree species in the world. The Hyperion tree, a coast redwood in California, holds the record at over 115 meters tall. Eucalyptus can grow very tall but not as tall as redwoods. Mahogany and teak are valuable timber trees but not record-breakers for height.

Nallamala is not a Biosphere Reserve - it is a mountain range in Andhra Pradesh. Agasthyamala (Kerala/Tamil Nadu), Panchamarhi (Madhya Pradesh), and Nilgiri (Karnataka/Kerala/Tamil Nadu) are all recognized Biosphere Reserves under India's UNESCO program. The Nallamala range is part of the Eastern Ghats but lacks this designation.

Tobacco is highly sensitive to frost damage, making it a crop that considers frost its enemy. Frost can severely damage tobacco leaves, reducing both quality and yield. While rubber, tea, and coffee are also affected by extreme cold, tobacco is particularly frost-susceptible and requires careful frost protection during cultivation.

Garlic has been scientifically proven to help lower cholesterol levels, particularly LDL (bad) cholesterol. It contains allicin and other compounds that have cardioprotective effects. While tulsi, serpentina, and turmeric have various medicinal properties in traditional medicine systems, garlic is the most well-documented for cholesterol management.

A lair is specifically the den or resting place of a wild animal, particularly wild beasts like lions or foxes. While forests are habitats where animals live, 'lair' refers to the specific shelter or den within that habitat. Sanctuary is a protected area for animals, and stable is specifically for horses or domesticated animals.

Earthworms have no eyes - they detect light through specialized light-sensitive cells in their skin called photoreceptors. They are adapted to life underground where vision is unnecessary. The options with one, two, or three eyes are all incorrect as earthworms are completely eyeless creatures.

Kangaroo is a marsupial - mammals that carry and nurse their young in a pouch. Marsupials are primarily found in Australia and include kangaroos, koalas, and wombats. Goats are placental mammals, lions are carnivorous mammals, and whales are marine mammals - none are marsupials.