2nd Year Biology Chapter 24 Notes

Complete handwritten Chapter No.24: 2nd Year Biology Chapter 24 Notes written by Professor Professor Mr. Adnan Haider. These notes are very helpful in the preparation of 2nd Year Biology Chapter 24 Notes of Biology for the students of the intermediate and these are according to the paper patterns of all Punjab boards.

Summary and Contents:
Topics which are discussed in the notes are given below:
  • Important 2nd Year Biology Chapter 24 mcqs for Intermediate part-II students.
  • 1. Which one is not a vestigial organ of human being?  (A) Appendix  (B) Eye lid  (C) Coccyx  (D) Nictitating membrane
  • 2. Darwin's theory , as presented in the Origin of Species , mainly concenrned:  (A) How new species arise  (B) The origin of life  (C) How adaptations evolve  (D) How extinctions occur
  • 3. The gill pouches of mammals and birds are:  (A) Support for " ontogeny recapitulates phylogeny "  (B) Evidence for the degeneration of unused body parts  (C) Used by the embrayos to breathe  (D) Used by the embrayos to breathe
  • Important 2nd Year Biology Chapter 24 important questions for Intermediate part-II students.
  • 4. The smallest biological unit that can envolve over time is:  (A) A population  (B) An individual  (C) A particular cell  (D) A species
  • 5. Among the scientists who believed in divine creation was:  (A) Lamark  (B) Carolus Linnaeus  (C) Darwin  (D) Hyell
  • 6. In a population with two alleles for a particular locus , B and b , the allele frequency of B is 0.7. What would be the frequency of heterozygote (Bb) if the population is in Hardy-Weinberg equilibrium?  (A) 0.7  (B) 0.09  (C) 0.42  (D) 0.49
  • Important 2nd Year Biology Chapter 24 short questions for Intermediate part-II students.
  • 7. Selection acts directly on:  (A) 0.42  (B) Each allele  (C) Genotype  (D) Phenotype
  • 8. In a population that is in Hardy Weinberg equilibrium , 16% of the individuals show the recessive trait . What is the frequency of the dominant allele in the population?  (A) 0.04  (B) 0.84  (C) 0.7  (D) 0.6
  • 9. According to endosymbiont hypothesis , the aerobic bacteria developed into:  (A) Ribosomes  (B) Lysosomes  (C) Golgi apparatus  (D) Mitochondria
  • Important 2nd Year Biology Chapter 24 important short questions for Intermediate part-II students.
  • 10. Flagella may have arisen through the ingestion of prokaryotes similar to spiral shaped bacteria called:  (A) E-coli  (B) Streptococcus  (C) Spirochete  (D) Rhizobium
  • 11. Which one of the following is endangered in Pakistan:  (A) Indian rhino  (B) Cheer pheasant  (C) Tiger  (D) Indus dophin
  • 12. A respiratory protein found in all aerobic species is the:  (A) Cytochrome - c  (B) Cytochrome - a  (C) Cytochrome - b  (D) Cytochrome - d
  • Important 2nd Year Biology Chapter 24 important long questions for Intermediate part-II students.
  • What are the sources of hydrogen for reducing CO2 in the first photosynthetic organism?
  • Which idea is known as the endosymbiont hypothesis?
  • What was the second idea of Lamarck called?
  • What is the important turning point for evolutionary theory?
  • How does natural selection occur?
  • What was the statement or theorem of Hardy-Weinberg?
  • Important Chapter 24 biology 2nd Year for Intermediate part-II students.
  • Which mating is called non-random mating?
  • On what evidence Darwin's theory of evolution was mainly based?
  • Who was Darwin's predecessor who developed a comprehensive model that attempted to explain how life evolves?
  • What is spirochete?  Define bio-geography.  What are fossils?
  • Define embryology.  What is molecular biology?   What does evolution refer to?
  • What is the concept of special creation?
  • Important 2nd Year Biology Chapter 24 Solved exercise for Intermediate part-II students.
  • What is the concept of Evolution?
  • What Darwin said about Finches of Galapagos?
  • What did Lamarck say about the use and disuse of organs?
  • What was Darwin's idea of the Origin of Species?
  • What was the contribution of Wallace in the development of the theory of natural selection?
  • Define the theory of natural selection.
  • what is evolving concept of life
  • What is Neo-Darwinism?
  • What does indicate that prokaryotes are ancestors of all life?
  • What are homologous structures?   What are vestigial organs?
  • Name some vestigial structures in man.
  • Differentiate between homologous and analogous organs.
  • Differentiate between natural selection and artificial selection. 
  • What is a population? Define species. What is a gene pool?
  • Define the Hardy-Weinberg theorem.  What is the Hardy-Weinberg equation used for?
  • What factors affect the gene frequency?
  • Important long question of Biology 2nd year chapter 24 

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