List of top Biology Questions

Can you suggest a method to remove oil (hydrocarbon) from seeds based on your understanding of rDNA technology and chemistry of oil?
What are Cry proteins? Name an organism that produces it. How has man exploited this protein to his benefit?
What is gene therapy? Illustrate using the example of adenosine deaminase (ADA) deficiency.
Compare and contrast the advantages and disadvantages of production of genetically modified crops.
Suggest the aspects of reproductive health which need to be given special attention in the present scenario.
Can you think and answer how a reporter enzyme can be used to monitor transformation of host cells by foreign DNA in addition to a selectable marker?
Can you recall meiosis and indicate at what stage a recombinant DNA is made?
Name the functions of the following.
  1. Corpus luteum
  2. Endometrium
  3. Acrosome
  4. Sperm tail
  5. Fimbriae
Differentiate between:
  1. Hypocotyl and epicotyl;
  2. Coleoptile and coleorrhiza;
  3. Integument and testa;
  4. Perisperm and pericarp
Fill in the blanks:
  1. Human Reproduction _____________ .(asexually/sexually)
  2. Humans are _________. (oviparous/viviparous/ovoviviparous)
  3. Fertilization is __________in humans. (external/internal)
  4. Male and female gametes are __________. (diploid/haploid)
  5. Zygote is ___________. (diploid/haploid)
  6. The process of release of the ovum from a mature follicle is called _____________.
  7. Ovulation is induced by a hormone called the __________.
  8. The fusion of the male and the female gametes is called ____________.
  9. Fertilization takes place in the __________.
  10. The zygote divides to form __________, which is implanted in uterus.
  11. The structure which provides vascular connection between the fetus and uterus is called __________.
What is triple fusion? Where and how it take place? Name the nuclei involved in triple fusion.
What is bagging technique? How is it useful in a plant breeding programme?
What are chasmogamous flower? Can cross-pollination occur in cleistogamous flowers? Give reason for your answer.
What is meant by monosporic development of female gametophyte?
Arrange the following terms in the correct developmental sequence: Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes
What is self-incompatibility? Why does self-pollination not lead to seed formation in self-incompatible species?
Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events? Name the structures formed at the end of these two events.
Name the parts of an angiosperm flower in which development of male and female gametophyte take place.
Which of the following is not true for a species ?
Which one of the following pairs is mismatched ?
Which one of the following pairs is mismatched ?
Grey crescent is the area
Why is apple called a false fruit? Which part(s) of the flower forms the fruit?
Ends of long bones are covered with
Why are living organisms classified?