Monday 23 May 2016

Topics for project report

For Project report, please check your topics against your name ... (If not mentioned,  comment your topic in comment box alongwith your name and get approval).

1. Kunika Kumari            Cancer- New Reseach on its Treatment
2. Pooja Singh                            
3. Priya Singh                 Stem cell (Rather Stem cell Therapy- An approach to treat                                                                                                                genetic disorders)
4 Rashi Rathi                   Bombay Blood Group- A special case
5.Riya Sharma             
6.Suchismita Ghosh          Pearl Farming
7. Sunderam Thakur          Thallesemia
8.Suruchi
9. Yukta                             Biofuels from algae
10. Akshat
11.Aman 
12 Anand
13. Anurag                        Insect hormones- A new way to control pests
14.Dhanajay
15. Dushyant                     Human Cloning
16.Mayur                                 
17.Mohit Diwakar                   
18.Mohit Garg                   Problems occuring during pregnanacy/ Gestation period 
19.Rahul                                   
20 Rishabh
21.Sanchay                       Harmful effects of Mobile radiations/ Mobile radiations causing infertility 
22. Siddharth


Some suggestions for topics:
  • Mental Health/ Mental disorders - causes and treatment
  • Endosymbiotic Theory- Origin of mitochondria and chloroplast
  • Life style disorders- ( Blood pressure/ Obesity/ Diabetes)
  • Forest fires: Natural disaster-Analysis of Causes, Effects and Solution
  • Alternative therapies (Accupressur/ Accupuncture / Homeopathy)- Scientific basis 
  • Report on most 'Endangered species of India' with reasons for their extinction and efforts for their conservation.
  • Indian Spices- Their source (which plant part is being used), cultivation and medicinal significance (alongwith the name of the chemical responsible for it) .
  • Genetically modified crops- Issues involved. ( both benefits and possible harms along with your opinion on whether they should be developed and used.)
  • Makhana Cultivation- (crop of immense potential,nutritional benefits,constraints and solutions)
  • A genetic/ chromosomal disorder

Important: A hand written report is needed. If your writing is not good you can type your report. In any case print out of a ppt (self made or available online) will not be accepted.




Syllabus for 1st term

Total marks = 50

  • Prepare Chapter 1, 2, 3, 4 and chapter 5 (up to Sex determination mechanism including it).
  • Practise all the diagrams of plant and human reproduction. (specially schematic representation of spermatogenesis/ oogenesis, seminiferous tubule, testis, sperm, ova, menstrual cycle, microsporogenesis, pollen grain, megasporogenesis, ovule, embryo sac. ). 
  • Practise making crosses and punnett squares of the different principles of inheritance very well.
  • Practise the questions given in earlier post.



You can enjoy in every upcoming year.... But this year is special for you as you are laying the foundation of your future...  Work hard as you will not get this time again..... Enjoy your studies and utilise this precious time in accomplishment of your dreams..




Wednesday 18 May 2016

Practise questions for vacations... Do prepare them well..

Some questions for practice during vacations:
Q.1a) Why does endosperm development precede embryo development in angiosperm seeds?
State the role of endosperm in mature albuminous seeds.
b) Describe with the help of three labeled diagrams the different embryonic stages that include mature embryo of dicot plants.
 Q.2a)Draw a sectional view of seminiferous tubule of a human. Label the following cells in the seminiferous tubule:
i)                    Cells that divide by mitosis to imcrease their number
ii)                   Cells that undergo Meiosis I
iii)                 Cells that undergo Meiosis II
iv)                 Cells that help in the process of spermiogenesis
b) Mention the role of Leydig cells.
Q.3 Explain the ovarian and uterine events that occur during a menstrual cycle in a human female under the influence of pituitary and ovarian hormones respectively.
Q. 4 a) List three different allelic forms of gene “I’ in humans. Explain the different phenotypic   
         expressions, controlled by these three forms.
b) A woman with blood group A marries a man with blood group “O”. Discuss the possibilities of the       inheritance of the blood groups in the following starting with “yes or “no” for each:
i)                    They produce children with blood group “A” only.
ii)                   They produce children some with “O” blood group and some with “A” blood group.
Q5. Aplant with purple flowers was crossed with white flowers producing 50 plants with only purple  flowers . On selfing , these plants produced 482 plants with purple flowers and 162 with white flowers. What genetic mechanism accounts for these results? Explain.
Q6. During his studies on genes in Drosophila that were sex linked, T.H. Morgan found population phenotypic ratios deviated from expected 9:3:3:1. Explain the conclusion he arrived at.
Q7. You are given a red flower bearing pea plant and a red flower bearing snapdragon plant.How would you find the genotypes of these plants with respect to the colour of the flower?
Explain with the help of crosses. Comment upon the pattern of inheritance seen in these two plants.

Q8. Some angiosperms are said to be albuminous whereas few others are said to have a perisperm. Explain each with the help of an example.
Q9. a)How does cleistogamy ensure autogamy?
b)State one advantage and one disadvantage of cleistogamy to the plant.
Q10. How is the child affected if it has grown from the zygote formed by an XX-egg fertilized by a Y carrying sperm? What do you call this abnormality?

  Q11. How does geitonogamy differ from xenogamy? Which one between the two will lead to inbreeding  depression and why?              


May post few more questions later on. So please check by 12 th june..                                                                                                                        

Sunday 15 May 2016

Topics discussed during 9/5/16-13/5/16

Chapter 4- Reproductive Health: Sexually Transmitted diseases(STDs), Assisted Reproductive Technologies(ARTs)

Chapter -5: Principles of Inheritance and Variation
Mendelian Experiments- Monohybrid / Dihybrid crosses, Laws of Inheritance, Dominance, Recesive, Incomplete dominance, Co dominance, Pleiotropic effect, Multiple allelism, Chromosomal Theory of inheritance. 

Thursday 5 May 2016

Topics discussed 24/4/16 - 5/5/16

Chapter-3: Human Reproduction
Oogenesis, Menstrual cycle, Fertilisation Implantation, Pregnancy, Placenta, Embryo development, Parturition

Chapter - 4: Reproductive Health-
Definition, Problems, Solutions, Contraceptives- Different types, Advantages and disadvantages, Medical Termination of Pregnancy