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A Learning Portal from Recruitment India
Breeding and management of bees is known as
Apiculture
Pisciculture
Silviculture
Sericulture
Answer with explanation
Answer: Option AExplanation
Beekeeping (or apiculture, from Latin apis, bee) is the maintenance of honey bee colonies, commonly in hives, by humans. A beekeeper (or apiarist) keeps bees in order to collect honey and other products of the hive (including beeswax, propolis, pollen, and royal jelly), to pollinate crops, or to produce bees for sale to other beekeepers.
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What Is The Study Of Cells Called
Cellogysm
Cytology
Cell Biology
Both B & C
Answer with explanation
Answer: Option DExplanation
Explanation:
The branch of biology that studies the different structures and functions of the cell is called Cell Biology or Cytology.
Cell biology (formerly called Cytology), is a Greek word: kytos, “vessel” is a branch of biology that studies the different structures and functions of the cell and focuses mainly on the idea of the cell as the basic unit of life.
The cell (from Latin cella, meaning “small room”) is the basic
Structural,
Functional (and)
Biological unit of all known living organisms.
A cell is the smallest unit of life that can replicate independently, and cells are often called the “building blocks of life”.
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The number of ribs found in a typical human ribcage is?
21
16
28
24
Answer with explanation
Answer: Option DExplanation
The rib cage surrounds the lungs and the heart, serving as an important means of bony protection for these vital organs. In total, the rib cage consists of the 12 thoracic vertebrae and the 24 ribs, in addition to the sternum.
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Ozone hole refers to
hole in ozone layer
decrease in thickness of ozone layer in stratosphere
decrease in the ozone layer in troposphere
increase in the thickness of ozone layer in troposphere
Answer with explanation
Answer: Option BExplanation
The term ‘ozone hole’ refers to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over Earth’s polar regions. Stratospheric ozone is constantly produced by the action of the sun’s ultraviolet radiation on oxygen molecules (known as photochemical reactions).
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Which among the following kinds of roots are found in Sugarcane?
Stilt Roots
Nodulose Roots
Prop Roots
Pneumatophores
Answer with explanation
Answer: Option AExplanation
In Maize and Sugarcane, roots arise from the first few nodes of the stem and penetrate obliquely down in to the soil and give support to the plant. They are called Stilt roots.
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Plasmodium falciparum, which causes malaria in humans is kept in which among the following groups?
Bacteria
Protozoans
Viruses
Fungi
Answer with explanation
Answer: Option BExplanation
Notes:
Plasmodium, a tiny protozoan is responsible for malarial disease. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
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Radioactivity is a phenomenon of the spontaneous emission of
protons (alpha particles)
electrons (beta particles)
gamma rays (short wave electromagnetic waves)
All of the above
Answer with explanation
Answer: Option DExplanation
Spontaneous emission of radiation, either directly from unstable atomic nuclei or as a consequence of a nuclear reaction. The radiation, including alpha particles, nucleons, electrons, and gamma rays, emitted by a radioactive substance.
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Name the tissues that transports food to various parts of a plant.
Parenchyma
Xylem
Phloem
Sclerenchyma
Answer with explanation
Answer: Option CExplanation
Xylem and Phloem tissues are present throughout the plant. They begin at the root and then move up to the stem, branches, and leaves. The xylem tissue transports water and minerals from the roots to the leaves whereas the phloem tissue transports food from the leaves to the other parts of the plant.
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Among the following elements, which one is essential for the transmission of impulses in the nerve fibre?
Zinc
Sodium
Calcium
Iron
Answer with explanation
Answer: Option BExplanation
The correct answer is Sodium
Sodium, chloride, and potassium ions are essential for the transmission of nerve impulses.
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Which of the following is a poisonous fish?
killer whale
lion fish
goldfish
hammerhead shark
Answer with explanation
Answer: Option BExplanation
Lion fish are noted for their venomous fin spines, which are capable of producing painful, though rarely fatal, puncture wounds.
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Which disease is called “royal disease”?
Haemophilia
Deep Vein Thrombosis
Anemia
Answer with explanation
Answer: Option AExplanation
Heamophilia is called a “royal disease”. The haemophilia gene was transmitted from Queen Victoria (who became Queen of England in 1837) to the ruling families of Russia, Spain, and Germany. The gene for haemophilia in Queen Victoria was caused by spontaneous mutation. Haemophilia research began around 1900.
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Which of the following statement is/are correct about Enzyme?
An Enzyme is a protein and is used as a catalyst to accelerate the reaction.
Life would not exist without the presence of enzymes.
Enzymes participate in cellular metabolic processes.
All the above
Answer with explanation
Answer: Option DExplanation
Enzymes are proteins that act as catalysts within the living cells. They are composed of one or more long chains of interconnected amino acids. They accelerate chemical reactions. All chemical reactions that occur in living organism are dependent on catalytic actions of enzymes and therefore, known as Bio transformation. Life would not exist without the presence of enzymes.
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Which of the following statement is correct about Cerebellum?
It regulates the muscular movement for locomotion.
It is a part of brain.
Both A and B
Neither A nor B
Answer with explanation
Answer: Option CExplanation
Cerebellum consists of large mass having ridges and furrows, situated above and behind the medulla and attached to cerebrum. It regulates muscular movement for locomotion. It is a part of brain.
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In Human beings the process of digestion of food begins in:
Stomach
Food Pipe
Mouth
Small Intestine
Answer with explanation
Answer: Option CExplanation
Digestion of food starts as soon as we put food in our mouth. The mouth cavity contains teeth, tongue and salivary glands. The teeth cut the food into small pieces, chew and grind it. The teeth help in physical digestion. The salivary glands help in chemical digestion by secreting enzymes.
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Who had given the theory of evolution of species by natural selection?
Darwin
Mendel
Dalton
Morgan
Answer with explanation
Answer: Option AExplanation
Charles Robert Darwin gave the theory of evolution in his book “The Origin of Species”. The theory proposed by him is known as “The Theory of Natural Selection”.
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Photosynthesis is :
An Oxidation-Reduction reaction
Synthesis reaction
Organic reaction
Replacement reaction
Answer with explanation
Answer: Option AExplanation
Plants are autotrophs as they prepare their own food with the help of photosynthesis and also green in colour due to the pigment chlorophyll present in the leaves. With the help of questions we have understood the necessity of it and also the process involved in the preparation of food and releasing oxygen in the environment.
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What are those animals called which eat both plants and animals?
Omnivores
Herbivores
Carnivores
Decomposers
Answer with explanation
Answer: Option AExplanation
omnivore an animal that eats both plants and meat. An animal that only eats plants is called a herbivore and an animal that only eats meat is called a carnivore.
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The process of removal of toxic wastes from the body of an organism is called:
Transport
Respiration
Excretion
Nutrition
Answer with explanation
Answer: Option CExplanation
The process of removal of toxic wastes from the body of an organism is called excretion.
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Why it is not advisable to sleep under a tree at night?
Release of less oxygen
Release of more oxygen
Release of carbon dioxide
Release of carbon monoxide
Answer with explanation
Answer: Option CExplanation
we should not sleep under a tree at night because at night trees take oxygen and release carbon dioxide.
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