Tag: general knowledge

Blood is classified as a fluid connective tissue because it consists of cells (red blood cells, white blood cells, platelets) suspended in a fluid matrix (plasma). Its liquid state does not disqualify it from being a tissue. Connective tissues are defined by having cells in an extracellular matrix, which blood satisfies.

The brain performs all three functions: thinking and learning through cognitive processing in the cerebral cortex; receiving and interpreting sensory information from all senses; and controlling voluntary movements by sending motor signals through the nervous system. These are core functions of the central nervous system.

Salamanders are amphibians, belonging to a different vertebrate class than mammals. Armadillos, shrews (misspelled as 'Schrew'), and bats are all mammals that share characteristics like hair/fur and mammary glands. Salamanders have moist skin and typically undergo metamorphosis from aquatic larvae.

Birds evolved from theropod dinosaurs during the Jurassic period, specifically from the maniraptoran group. This evolutionary relationship is supported by numerous fossil discoveries including Archaeopteryx and many feathered dinosaur species. Birds share anatomical features with dinosaurs including hollow bones, wishbones, and scaled legs.

Birds are endothermic, meaning they generate internal heat through metabolic processes to maintain a constant body temperature regardless of environmental conditions. This contrasts with ectothermic animals like reptiles that rely on external heat sources. 'Endothermic' literally means 'heat from within.'

7 boys × 2 legs = 14 legs. 7 boys × 7 bags = 49 bags. 49 bags × 7 dogs = 343 dogs × 4 legs = 1372 legs. Each dog has 7 puppies = 343 × 7 = 2401 puppies × 4 legs = 9604 legs. Total legs in bus = 14 + 1372 + 9604 = 10990 legs.

By Legendre's three-square theorem, a positive integer n can be expressed as the sum of three squares of integers if and only if n is not of the form 4^a(8b+7) for nonnegative integers a and b. Testing numbers 1-14, only 7 satisfies this condition (7 = 4^0 × (8×0+7)), making it impossible to represent as a sum of three squares. All other numbers like 1 (= 1²+0²+0²), 2 (= 1²+1²+0²), and 3 (= 1²+1²+1²) can be represented.

Let the hand length be L cm. The statement '30 cms more than half its length' translates to the equation L = L/2 + 30. Subtracting L/2 from both sides gives L/2 = 30, so L = 60 cm. This is a straightforward algebra problem requiring only basic equation solving.

The fish makes net progress of 7 - 5 = 2 km per full day (day swim + night float back). After 9 days, it reaches 18 km (9 × 2). On the 10th day, starting from 18 km, it swims 7 km to reach exactly 25 km and achieves its goal - it doesn't float back since it has arrived. This type of problem requires tracking the final day separately.

Gingee Fort (Tamil Nadu) is known by multiple names derived from its original Tamil name 'Senji' or 'Chenji'. Both 'Chenji' and 'Jinji' are valid transliterations of the Tamil name, representing the same historical fortification complex in different romanization systems.