Fluoride pollution mainly affects (1) Brain (2) Heart (3) Teeth (4) Kidney
Answer: (3) Teeth Fluoride is a mineral found in bones, teeth, the thyroid gland, and the skin. It is important... View Article
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What is Richmond Lang effect?
Answer: The effect was discovered in 1967 by Richmond & Lang. As per this effect, the lag of senescence of... View Article
Describe vexillary aestivation with a suitable example.
Answer: Aestivation is the arrangement inside a bud of the floral parts until it blooms into a flower. Sepals or petals’... View Article
Glochidium larva is found in (1) Pola (2) Unio (3) Sepia (4) Asterias
Answer: (2) The glochidium or plural glochidia is a microscopic larval stage of some freshwater mussels, aquatic bivalve molluscs in... View Article
Potato is a stem and sweet potato is a root justify the statement
Answer: Sweet potato is a modified food storage root, of fibrous roots. Potato is a stem that developed on the... View Article
What do we get from cereals pulses, fruits and vegetables?
Answer: The things that we receive from cereals, pulses, fruits and vegetables are explained below. Cereal crops – Wheat, Maize,... View Article
First transgenic plant was tobacco and it contain resistant gene for (1) Insect resistance (2) Herbicide resistance (3) Pest resistance (4) Frost resistance
Answer: (2) The first genetically modified plant, an antibiotic-resistant tobacco plant, was developed in 1982. The first field trials took... View Article
What conclusion was drawn from red drop and enhancement experiments in the light reaction of photosynthesis (1) Two photosystems are present (2) One photosystem is present (3) Two photosystems are present which work at different wavelengths (4) Two photosystems are present which work at some wavelength
Answer: (3) The light reaction is the process of photosynthesis that converts energy from the sun into chemical energy in... View Article
Triple antigen DPT is a (1) Vaccine against malaria, typhoid and cancer (2) Vaccine of mixture of viruses that causes tetanus, diphtheria and typhoid (3) Vaccine against polio, rabies and hepatites (4) Vaccine against diphtheria, pertussis and tetanus
Answer: (4) The DPT vaccine provides protection against diphtheria, pertussis is also known as whooping cough, and tetanus common name... View Article
Scypha (Sycon) belongs to (1) Calcarea (2) Hexactinellide (3) Demospongiae (4) Hyalospongiae
Answer: (1) Sycon or Scypha is a typical tiny, colonial sponge. Sycon is a common marine sponge. They’re sedentary. It... View Article
What is latent heat of vaporization?
Answer: Latent heat is defined as the heat or energy that is absorbed or released during a phase change of... View Article
What are the sub stages prophase 1 of Meiosis 1? Explain briefly
Answer: Meiosis is the type of cell division that results in four daughter cells each with half the number of... View Article
The alloy bronze contains copper and tin. This is a (1) Homogeneous mixture (3) Heterogeneous mixture (3) Solid solution of two immiscible metals (4) Pure substance
Answer: (1) Bronze is an alloy which mainly contains Copper (Cu) as a primary component along with Tin (Sn), other... View Article
What is a biopatent? Give any two examples.
Answer: Bio-patent applies to patents obtained by individuals or groups or country in order to gain exclusive rights over the... View Article
Write two examples of plants with climbing roots.
Answer: Climbing roots are the adventitious roots that arise from the nodes or internodes in plants having weak stems. These... View Article
State an example of gas in solid solution.
Answer: Solutions in which solvent is present is gaseous state are called Gasesous solution. Gaseous solutions can be divided into... View Article
Prove that squar root of 5 is irrational and hence prove that (2− squar root of 5) is also irrational.
Answer: Let us assume to the contrary that √5 is a rational number. It can be expressed in the form... View Article
Explain Schottky defect and Frenkel defect.
Answer: Schottky defect Schottky defect or small shot effect is named after a popular German physicist Walter H. In his... View Article
What is botanical name of potato and tomato?
Solanum tuberosum and Solanum lycopersicum Solanum truncatum and Solanum lycocarpum Solanum lycopersicum and Solanum tuberosum None of the above Answer: 1) Solanum tuberosum and Solanum... View Article
A non-striated muscle is also called as (1) CArdiac muscle (2) Skeletal muscle (3) Voluntary muscle (4) Involuntary muscle
Answer: (4) Muscular tissue is a specialized tissue in animals which applies forces to different parts of the body by... View Article
