If the boat weighs less than the maximum volume of water it could ever push aside (displace), it flo...

Friction is the force resisting motion between surfaces.Static friction exists between a stationary ...

Metal atoms have outer electrons which are not tied to any one atom. These electrons can move freely...

The SI unit for pressure is the Pascal (Pa), equal to one newton per square metre. The pressure exer...

Atmospheric pressure is exerted by the weight of the air in the atmosphere. Atmospheric pressure is ...

Yes. Gravity is a force. An invisible force that pulls objects toward each other. Earth's gravity is...

Each of these stages can be easily recognized by its special appearance. Egg: Eggs are laid one at a...

In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of the...

During puberty your ovaries get bigger and your body will start to produce two hormones - oestrogen ...

Prokaryotes lack nucleus. Their irregularly shaped region that contains the genetic material is call...

Cheek cells do not have cell wall. Check cell is an animal cell. Animal cells lack a cell wall. Plan...

The first cloned sheep was called dolly. Dolly (sheep) was a female domestic sheep, and the first ma...

Internal fertilization takes place in humans and sheeps. Fertilization which takes place inside the ...

The largest among various protected area is a biosphere reserve. The UNESCO World Network of Biosph...

State legal recognition of the RDBRF is provided by the Russian Federation Law "About protection of ...

The first antibiotic was prepared from a fungus.

Viruses are group of organisms comprise only pathogenic members. A virus is a small infectious agent...

The earth's atmosphere is a very thin layer wrapped around a very large planet. Two gases make up th...

The process of separation of grains from chaff is winnowing.Wind winnowing is an agricultural method...

A rhizome is an underground stem, similar to a root or bulb, that multiplies each year as the plant ...

Sariska Tiger Reserve is a national park and tiger reserve located in the Alwar district of the stat...

Each gamete contains one sex hormones. A gamete a haploid cell that fuses with another haploid cell ...

India has two hotspots of biodiversity North-East Himalayas and Western Ghats. The Eastern Himalayan...

Along with the testicular hormones, sperm formation also needs hormones from Pituitary gland. The pi...

Secretions of endocrine glands are known as hormones. Endocrine glands are glands of the endocrine s...

First animal to be cloned was sheep. Dolly (sheep) was a female domestic sheep and the first mammal ...

Binary fission is found in unicellular organisms like Amoeba, Paramecium and Euglena. This form of a...

Spermatozoa is not a cell. A spermatozoon is a motile sperm cell, or moving form of the haploid cell...

The threadlike structures found in a nucleus are called chromosomes. Chromosomes are found in all of...

Among the given options it does not include rainfall. Biotic components usually include : Producers,...

The term biodiversity first appeared in a publication in 1988 when entomologist E.O.Wilson used it a...

A group of similar organisms living together in a specific habitat in called population. A group of ...

Vaccines contain whole bacteria or viruses. In these cases the bacteria or viruses will either be se...

Maize is a kharif crop, which requires high temperature, rainfall and humidity to grow, while rabi c...

The method of irrigation in which water enters the filed through channels made between two rows of c...

Centrosomes are present only in animals. Centrosomes are structures found inside of cells. They are ...

Function of an ecosystem are transfer of energy fixation of solar energy and transfer of organic mat...

E. coli are a large and diverse family of bacteria that normally live in the intestines of people an...

The voice of girls become shrill but sweet during adolescence.

The growing voice box in boys can be seen as a protruding part of the throat called Adam's apple. In...

Frogs are found to exhibit by external fertilization, sexual reproduction and oviparity.

In human beings, sexual reproduction takes place by combination of gametes, i.e the sperm and the eg...

She felt the sensation of heat and reacted due to the action of nerve cells. Neurons are nerve cells...

The basic function of the cell membrane is to protect the cell from its surroundings. It consists of...

The Arctic tern is famous for its migration; it flies from its Arctic breeding grounds to the Antarc...

Biodiversity refers to the variety of plants, animals and microbes found in a particular area. Plant...

An S-layer (surface layer) is a cell surface protein layer found in many different bacteria and in ...

Yeast is used to make bread. Yeast is a microbe which feed on sugar. Enzymes in yeast ferment sugar ...

Too much water actually is bad for most of our trees and plants. If soil becomes waterlogged and sta...

Nitrification is a process where ammonia is converted to nitrites and then to nitrates, before it ca...