math & puzzles Online Quiz - 79

Crocodiles are ectothermic reptiles with extremely slow metabolisms when inactive, allowing them to survive extended periods without food - up to two years in extreme cases. This is a well-documented biological fact. The other animals listed (eel, camel, zebra) cannot survive such prolonged fasting.

Cold-blooded (ectothermic) means that an animal cannot regulate its internal body temperature internally. Instead, they rely on external heat sources, like the sun, to warm up and become active. It does not mean their blood is always cold.

Amphibians generally lay their eggs in water (ponds, lakes, or streams). The larvae, such as tadpoles, hatch and live in the water using gills before undergoing metamorphosis to live on land. They are not born in trees or ice.

The cheetah is the fastest land animal, capable of reaching speeds between 110 and 120 km/hr in short bursts. 40 km/hr is too slow, while 200 and 400 km/hr are speeds reserved for high-speed trains or aircraft.

The Goshawk was historically referred to as the 'Cook's Bird' because it was frequently used by the lower classes (including cooks) for hunting meat for the table, unlike the 'noble' falcons used by the aristocracy.

Opossums are marsupials. At birth, the joeys are extremely underdeveloped and tiny, roughly the size of a honeybee or bumblebee. They then crawl into the mother's pouch to continue developing. They are much smaller than mice at birth.

Butterflies have chemoreceptors on their feet (tarsi) that allow them to 'taste' plants to determine if they are suitable for laying eggs or if they contain nectar. They do not taste with their wings or antennae.

For a long time, the giant panda was classified as a member of the Procyonidae family (raccoons) or its own family. Molecular DNA analysis eventually proved it is actually a member of the Ursidae (bear) family.

The ostrich is unique among birds in having only two toes on each foot. This is an adaptation for running - ostriches are the fastest runners of any two-legged animal. Most birds have four toes, though some species have three or four toes depending on their perching or walking needs.

The Tyrannosaurus rex had teeth that could reach about 6 inches (15 cm) in length from the crown to the tip (not including the root). Some estimates including the root reach 12 inches, but 6 inches is the standard for the visible portion.

In the wild, bullfrogs typically live 7 to 9 years, but in captivity or ideal conditions, they can live up to 15 years. Among the provided options, 15 is the recognized upper limit for their lifespan.

Morocco leather is a soft, pliable leather traditionally made from goat skin. It is known for its distinct grain and was historically tanned with sumac. Sheep, cow, and horse hides produce different types of leather.

Puppies typically develop their full set of 28 deciduous (baby) teeth by the time they are about 3 to 6 weeks old, making '1 month' the most accurate approximation among the choices. Their adult teeth begin appearing around 4 months.

A house cat has 18 claws total: five on each front paw (4 × 5 = 10) and four on each back paw (4 × 4 = 8), totaling 18. Cats use these for climbing, hunting, and self-defense. The front dewclaw is vestigial in some cats.

In 2001, the Nandankanan Zoological Park in Odisha (Bhubaneshwar) suffered a major tragedy where a significant number of tigers died due to 'trypanosomiasis'. This event led to national concern regarding zoo management in India.

Goldfinches are granivores that specifically prefer Nyjer (thistle) seeds. They have small beaks perfectly adapted for these tiny, oil-rich seeds. While they may eat sunflower hearts, thistle is their most famous favorite.

The American Avocet is a shorebird with a long, upturned bill used for foraging in shallow water; it does not visit typical backyard bird feeders. Juncos, Chickadees, and Wrens are common visitors to feeders for seeds, suet, or mealworms.

Blue jays are omnivorous birds that eat both plant material (seeds, nuts, berries) and animals (insects, small invertebrates, occasionally eggs). Sunbirds primarily feed on nectar, vultures are carrion eaters, and flycatchers mainly eat insects. Blue jays have the most varied diet among these options.

The passenger pigeon (Ectopistes migratorius) was once the most abundant bird in North America but was hunted to extinction in the early 20th century, with the last individual dying in 1914 at the Cincinnati Zoo. Great frigate birds, kakapos (New Zealand parrots), and African snipes are not extinct.

Ostriches are unique among birds in that they have only two toes on each foot, whereas most birds have three or four. This adaptation helps them run at high speeds. Other options like 3, 4, or 5 are incorrect for this species.