What is haemocoel? Which group of animals have haemocoel?
Answer: Diversity is one of the important factors that enrich our lives in different ways. Diversity helps people to communicate... View Article
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Which is strongest and weakest bone in human body?
There are around 206 bones in the human body. The femur is the longest, heaviest and strongest bone in the human... View Article
What is shunt explain its uses?
Ecology is the science of the study of ecosystems. Ecological balance has been defined as a state of dynamic equilibrium... View Article
Why are manure and fertilizers used in field?
Manures and fertilizers are used in fields to supply plant nutrients to the soil,, increasing soil fertility to ensure good... View Article
Water hyacinth floats on water surface. Explain
Water hyacinths have large air cavities in the parenchyma tissue. For this reason, it floats in water. This specialized parenchyma... View Article
Find a relation between x and y such that the point (x, y) is equidistant from the point (3, 6) and (-3, 4) .
Lysosomes are cell organelles present in the eukaryotic cells which are called as ‘digestive bags’. Golgi bodies produce lysosomes. They... View Article
What do you mean by quantization of electric charge?
Guard cells perform the functions of opening and closing of stomata. The guard cells are surrounded by subsidiary cells. When... View Article
The electrical resistance of insulators is (a) high (b) low (c) zero (d) infinitely high
Wheat and gram belongs to rabi crops. The crops which are sown in the beginning of winter (October-November) are known... View Article
The only cell organelle seen in a prokaryotic cell is (a) Mitochondria (b) Ribosome (c) Plastids (d) Lysosomes
Organs are present in the entire body. They perform functions for the entire body. Examples: Stomach, Kidney. The membrane bound... View Article
What is meant by symbiotic nutrition?
Anal sphincter regulates the exit of unabsorbed food. It is released in small amounts to outside. It is the part... View Article
What is the focal length of a spherical mirror?
Plasma membrane is the outermost covering of the cell which is made up of phospholipids bilayer and proteins. The fundamental... View Article
Lipid molecules in a cell are synthesized by (a) Smooth endoplasmic reticulum (b) Golgi apparatus (c) Rough endoplasmic recticulum d) Plastids
Ventral surface of the leaf is the front face of the leaf or the upper surface of the leaf. Since... View Article
Distinguish between fundamental and derived units and give examples of derived units
Jute is known as the golden fibre because of its yellowish brown, shiny, natural vegetable fibre produced from the plants... View Article
Name and define the mode of nutrition in mushrooms
Tomato is a rich natural source of oxalic acid. All remaining three acid have role in protecting your health and... View Article
How much quantity of vitamin is required everyday?
In agriculture, multiple cropping is the practice of growing two or more crops on the same piece of land during... View Article
Give example for long term crops and short term crops?
The postcaval vein is present in terrestrial vertebrates. The anterior vena cava, also known as the precava. The left ventricle... View Article
What is the main difference between chyme and chyle?
The region of the stroma that interconnects the thylakoid stalks are called as stromal lamellae which is present in stroma... View Article
Name the plant tissue having dead cells. (1) Xylem (2) Collenchyma (3) Parenchyma (4) Phellogen.
Answer: (1) Xylem Xylem is the plant tissue with a dead cell. These tissues are made up of dead cells... View Article
What are the characteristics of Protista?
Myopia is the inability of an eye in viewing long distant objects. The image in this case is formed before... View Article
A cell will swell up if (a) The concentration of water molecules in the cell is higher than the concentration of water molecules in surrounding medium (b) The concentration of water molecules in surrounding medium is higher than water molecules concentration in the cell (c) The concentration of water molecules is same in the cell and in the surrounding medium (d) Concentration of water molecules does not matter
Contour ploughing is the ploughing, done at right angles to the hill slopes, ridges and furrows so that the elevation... View Article
