If we say the child has an IQ of 100, what does this means? A.The performance of the child is below average. B.The performance of the child is above average. C.The mental age of the child is equal to his actual age. D.The performance of the child cannot be better.

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Question:- Which bacteria is responsible for the formation of curd? A.Lactic acid bacteria B.Lactobacillus Acidophillus C.Lactobacillus aureus D.Bacillus radicicola

Answer:- B

Question:- Which one of the following bacteria present in the soil produces a peculiar smell if it rains on perched soil? A.Streptomycetes B.Staphymycetes C.Diplomycetes D.Micrococcus

Answer:- A

Question:- In poorly ventilated buildings which one of the following inert gases can be accumulated? A.Helium B.Neon C.Argon D.Radon

Answer:- D

Question:- Honey is sweeter than cane sugar or corn syrup. Which one of the following carbon sugars is responsible for this? A.Dextrose B.Levulose C.Sucrose D.Fructose

Answer:- B

Question:- Who had given the theory of evolution of species by natural selection? A. Darwin B. Mendel C. Dalton D. Morgan

Answer:- Ans. A Explanation: 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”.

Question:- Who is known as the father of genetics? A. Mendel B. Darwin C. Dalton D. Marie Curie

Answer:- Ans. B Explanation: Gregor Mendel is termed as the father of genetics because he has discovered the basic principles of heredity.

Question:- Which of the following are the sources which provide evidences for evolution? A. Homologous organs B. Analogous organs C. Fossils D. All the above

Answer:- Ans. D Explanation: The important sources which provide evidences for evolution are homologous organs, analogous organs and fossils.

Question:- Name a fossil bird which looks like a bird but has many other features found in reptiles? A. Dodo B. Archaeopteryx C. Flamingos D. Mouse Bird

Answer:- Ans. B Explanation: Archaeopteryx is a fossil bird which looks like a bird but it has many other features which are found in reptiles.

Question:- Name the organs which have different basic structure but have similar appearance and perform similar functions? A. Analogous organs B. Homologous organs C. Both A and B D. Neither A nor B

Answer:- Ans. A Explanation: Analogous organs have different basic structure but have similar appearance and perform similar functions. Example wings of an insect and a bird have different structures but similar functions.

Question:- Who suggested that life must have developed from the simple inorganic molecules like methane, hydrogen etc. which were present on the earth soon after it was formed? A. Darwin B. Marrie Curie C. Haldane D. None of the above

Answer:- Ans. C Explanation: J.B.S Haldane, a British scientist suggested in 1929 that life must have developed from the simple inorganic molecules like methane, hydrogen etc. which were present on the earth soon after it was formed.

Question:- Aves have evolved from: A. Amphibians B. Arthropods C. Mammals D. Reptiles

Answer:- Aves have evolved from: A. Amphibians B. Arthropods C. Mammals D. Reptiles

Question:- The theory of origin of life on earth is proposed by: A. Haldane B. Stanley Miller C. Harold C. Urey D. Lamarck

Answer:- Ans. A Explanation: The theory of origin of life on earth is proposed by Haldane was confirmed by the experiments conducted by Stanley L. Miller and Harold C. Urey.

Question:- Which of the following are the postulates of Darwin’s theory of evolution? A. Within any population, there is natural variation. B. Even though all species produce a large number of offsprings, populations remain fairly constant naturally. C. The struggle for survival within populations eliminates the unfit individuals. D. All the above are correct

Answer:- Ans D Explanation: Darwin’s theory of evolution can be described as: within any population, there is natural variation. Some individuals have more favourable variations than others. Even though all species produce a large number of offsprings, populations remain fairly constant naturally. The struggle for survival within populations eliminates the unfit individuals. This is called natural selection.

Question:- The process by which new species develop from the existing species is called: A. Homologous B. Analogous C. Speciation D. Genetic variation

Answer:- Ans. C Explanation: Speciation is the formation of new species.