Science

which plant has biggest flower ?
Rafflesia(it is a genus of parasitic flowering plants. it contains approximately 28 species ,all found in southeast Asia on Indonesia, Malaysia, Borneo, Sumatra, Thailand and the Philippines. Rafflesia was found in the Indonesian rain forest by an Indonesian guide working for Dr. Joseph Arnold in 1818, and named after Sir Thomas Stamford Raffles,The plant has no stems, leaves or true roots. It is a holoparasite of vines in the genus Tetrastigma (Vitaceae), spreading it absorptive organ, the haustorium, inside of the vine. The only part of the plant that can be seen outside the host vine is the five -petaled flower. In some species ,such as Rafflesia arnoldii, the flower may be over 100 centimeters (39 in) in diameter , and weight up to 10 kilograms (22 lb). Even the smallest species, R. baletei, has 12 cm diameter flowers. The flowers look and smell like rotting flesh, hence its local manes which translate to "corpse flower" or "meat flower"   

What is Hydroponics ?

it is a subset of hydro-culture and is a method of growing plants without soil with the help of water using mineral and nutrient in water ,Terrestrial plants may be grow with their roots in the mineral and nutrient solution only 

The gender of human baby depend upon ?

chromosome of father (y chromosome)

How many pair of chromosome in each cell normally contains in a human ?

23 pair of chromosome (total number is 46, the 22 autosomes are numbered by size. The other two chromosomes, x and y are sex chromosomes. and the sub total is 23 pair include the sex chromosomes and total number is 46 

what is the cause of smell in Urine ?

The smell of ammonia in urine because of bacteria that contaminate the urine will convert chemicals in the urine into smelling chemicals that are responsible for the distinctive smell,such as ammonia

why mostly fish does't go down in water ?

due to presence of swimbladder 

 The first scientist who prepared enzymes and virus proteins in pure crystallized form ?

Wendell Stanley 

Litmus extracted from ?

Lichens ( it is water soluble mixture of different dyes extracted from lichens ,it is often absorbed onto filter paper to produce the pH indicator range 4.5 to 8.3 at 25 °C (77 °F) used to taste material acidic or basic condition , blue litmus paper turn red under acidic condition red litmus paper turn blue under basic condition or alkaline condition, Neutral litmus paper is purple.)

Which tree bark is used to cure the malaria ?

chincona tree bark 

Family: Rubiaceae
Genus: Cinchona
Species: officinalis, ledgeriana, succirubra, calisaya
Synonyms: Quinaquina officinalis, Quinaquina lancifolia, Quinaquina coccinea
Common names: Quinine bark, quina, quinine, kinakina, China bark, cinchona bark, yellow cinchona, red cinchona, Peruvian bark, Jesuit's bark, quina-quina, calisaya bark, fever tree
Parts Used: Bark, wood

Found in rainforest's most famous plants ,they grow 15-20 meter high and produce white, yellow and pink flower All cinchonas are indigenous to the eastern slopes of the Amazonian area of the Andes, where they grow from 1,500-3,000 meters in elevation on either side of the equator (from Colombia to Bolivia). They can also be found in the northern part of the Andes (on the eastern slopes of the central and western ranges). They are now widely cultivated in many tropical countries for their commercial value, although they are not indigenous to those areas.

Pasmina goat is breed of ?

Changthangi (Changthangi is a well recognized breed of goat popular for its valuable produce called pashmina. The breeding tract of this goat is in the Changthang area of Leh district of Jammu & Kashmir State and is adjacent to Tibet. The breed is well adapted to the local cold arid agro-climatic conditions of the region and is reared mainly by a nomad known as ‘Changpa’. The fibre produced by this breed is the prime source for the world-class shawl industry of Kashmir)