top every day science solved mcqs for All test ppsc , nts, ots
>> The exchange of chromosal segments i.e.
crossing over occurs during first meiotic
>> Many bacteria in our digestive system
synthesize vitamins for example vitamin B12.
>> Meningitis is very serious disease of brain which
is caused by fungi.
>> Waxes are widespread as protective coatings on
fruits and leaves.
>> Leucoplast is present in the underground parts
of the plants and stored food.
>> The simplest amino acid is glycine.
>> Accumulation of lipid molecules in brain cells
lead to mental retardation.
>> The life and activities of a cell is controlled by
>> Flagella are composed of micro tubules.
>> Tobacco mosaic virus was crystallized by
>> Non-enveloped naked viruses are known as
>> Gram +ve bacteria on treatment with crystal
violet dye give purple color.
>> Malaria parasite is injected into man as
>> The terms procariotique and eucariotique were
proposed by Chatton.
>> The most common type of asexual reproduction
in the fungi is spore production.
>> Outside the thallus of Marchantia there are
special structures called rhizoids.
>> The vascular plants are termed as
>> In human beings influenza is caused by virus.
>> In arthropoda phylum the body of an organisms
is usually divided in three regions called head,
thorax and abdomen.
>> Snails belong to gastropods.
>> Amoeba moves in water with the help of
locomotory organs called pseudopodia.
>> In all coelenterates endoderm give rise to
>> Higher vascular plants are also called seed
>> The plants which produce embryo but lack
vascular tissues and seeds are placed in
>> Clavicle bone is called beauty bone in women.
>> Detachment of myosin head and actin in rigor
mortis occurs due to autolysis in body.
>> Release of the ovum from ovary is called
>> The foetus is protected from the mechanical
damage by the amniotic fluid.
>> Rich source of energy in seimen is glucose.
>> Sickle cell anemia was discovered by Vernon
>> Earthworm lives in moist soil.
>> Kangaroo has an abdominal pouch known as
>> The utilization of the products of digestion is
>> Para bronchi are present in birds.
>> The respiratory problem most common in
smokers is emphysema.
>> Water potential of pure water is zero.
>> Bean shaped cells in plants are guard cells.
>> The normal pH of human blood is 7.4.
>> Shrinkage of protoplast due to exosmosis of
water is plasmolysis.
>> Artherosclerosis is a major condition leading to
>> Villi and microvilli increase absorption.
>> Splitting of glucose relates to glycolysis.
>> Reptiles hibernate during winter.
>> sphenopsids plants are called arthrophytes.
>> The temperature at which all of solid becomes a
liquid is called its melting point.
>> The temperature at which all of a liquid
becomes a gas is called its boiling point.
>> Only 2% of the world’s water is in the form of
>> The heavies’ solid is the element osmium.
>> The lightest gas is hydrogen. About 99.99% of
the volume of hydrogen gas is empty space.
>> The average human body contains about 250g
of sodium chloride.
>> The deepest place on Earth is Mariana Trench.
>> Bond making is Exothermic Reaction, and Bond
breaking is Endothermic Reaction.