Fill in the blanks and rewrite the statements:
Heredity and Evolution One Mark questions answers
(1) Johann Gregor Mendel is pioneer of the modern genetics.
(2) Heredity is the transfer of biological characters from one generation to another via genes.
(3) Each mRNA is made up of thousands of triplet codons .
(4) Vertebrates have slowly originated from invertebrates
(5) Peripatus is the connecting link between annelida and arthopoda.
(6) Darwin had published a book titled Origin of Species .
(7) Neanderthal man can be considered as the first example of wise man.
(8)mRNA is produced as per the sequence of nucleotides on DNA.
(9) There is Uracil in RNA instead of thymine of DNA.
(10) The code for each amino acid consists of three nucleotides, called as triplet codon
(11) Dr. Har Govind Khorana ,a scientist of Indian origin discovered triplet codons for 20 amino acids.
(12) Ribosome keeps moving from one end of mRNA to other end by the distance of one triplet codon. This is called as translocation
(13) Sometimes, any nucleotide of the gene changes its position which cause a minor change which is called mutation.
(14) Carbon dating method is developed by Willard Libby
(15) Ape-like animals reached the South and North- East Asia and finally evolved into gibbon and orangutan
(16) The first human-like animals with erect posture evolved about 2 crore years ago.
(17) First record of human-like animal is in the form of Ramapithecus ape from East Africa.
(18) Human walking with erect posture was evolved about15 lakh years ago.
(19) The Cro-Magnon man evolved about 50 thousand years ago.
(20) About 10 thousand years ago, wise-man started to practice agriculture.
21) The causality behind the sudden changes was understood due to Mutation principle of Hugo de Vries.
(22) The proof for the fact that protein synthesis occurs through Gene was given by George Beadle and Edward Tatum.
(23) Transfer of information from molecule of DNA to mRNA is called as Transcription process.
(24) Evolution means Gradual development
(25) Vestigial organ Appendix present in human body is the proof of evolution.
Heredity and Evolution One Mark questions answers
Find the odd one out:
1)Transcription, transpiration, translation, translocation.
Ans. Transpiration
2) Appendix, muscles of ear pinna, wisdom teeth, long neck of giraffe.
Ans. Long neck of Giraffe
3) Cocyx, intestine, wisdom teeth, appendix.
Ans- Intestine .
State whether the following statements True or False. Correct the false statements.
(1) Complex proteins control various functions in the body of living organisms and their appearance too. True
(2) Mutation may cause the genetic disorders like sickle cell anemia. True
(3) Muscles of ear pinna, which are useful to human, are useless in monkeys for movement of ear pinna. False. Muscles of ear pinna, which are useless to human are useful in monkeys for movement of ear pinna.
(4) Evolution is a gradual change occurring in living organisms over a long duration. True
(5) Waltor Sutton is the pioneer of modern genetics. False. Johann Gregor Mendel is the pioneer of modern genetics.
(6) Ostwald Avery, Mclyn McCarthy and Colin Macleod proposed a model for process of protein synthesis with the help of DNA in bacterial cells. False. French geneticists Francois Jacob and Jack Monad proposed a model for process of protein synthesis with the help of DNA in bacterial cells.
(7) Information about protein synthesis is stored in the RNA. False. Information about protein synthesis is stored in the DNA.
(8) Both the strands of DNA are used in the process of protein synthesis.False. Only one of the two strands of DNA are used in the process of protein synthesis.
(9) The process of RNA synthesis is called translation .False.This process of RNA synthesis is called transcription.
(10) Amino acids are supplied by tRNA. True
(11) First living material has been formed in the ocean. True
(12) Appendix is useless to humans. True
(13) Duckbill platypus is a connecting link between annelida and arthropoda. False. Peripatus is a connecting link between annelida and arthropoda .
(14) Geographical or reproductive isolation leads to speciation. True
(15) About 10 thousand years ago, wise man started to practice agriculture. True
Choose and write the correct option .
1)_______________proposed a model for protein synthesis with the help of DNA in bacterial cells.
(a) Johann Gregor Mendel (b) Walter and Sutton (c) Francois Jacob and Jack Monad (d) Hugo de Vries
2) Information about protein synthesis is stored in the_________
(a) mitochondria b) DNA (c) RNA d) Ribosomes
3) ____________ brings in the coded message from the DNA.
(a) mRNA (b) tRNA (c) rRNA (d) Ribosomes
4) As per the message on mRNA, amino acids are supplied by tRNA. This is called as_____
(a) Transcription (b) Translocation
(c) Translation (d) Transportation
(5)_____________is a gradual change occurring in living organisms over a long duration.
(a) Evolution (b) Variation (c) Mutation (d) Heredity
(6) The theory of natural selection was proposed by________
(a) Mendel (b) Charles Darwin (b) Lamarck (d) Hugo de Vries
(8) Carbon dating method measures the radioactivity of C-14 and the ratio of ____________present in the organism’s body.
(a) C-12 to C-14 (b) C-6 to C-7 (c) C-14 to C-12 (d) C-14 to O-16
(8) Mammals have evolved from____________
(a) aves (b) reptiles (c) amphibians (d) fishes
(10)___________is not a vestigial organ in man.
(a) Appendix (b) Body hair (c) Wisdom tooth (d) Duodenum