Everything you need to learn Biology and Science

LOCOMOTION AND MOVEMENT 2013 MARCH 1.        Observe the structural representation of the muscle given below:

LOCOMOTION AND MOVEMENT 2016 MARCH 1.       “A contracted muscle becomes shorter and thicker but its volume remains the same.”

NEURAL CONTROL AND COORDINATION 2013 MARCH 1.       Arrange the following processes in nerve impulse conduction in a sequential order. (3)

NEURAL CONTROL AND COORDINATION MARCH 2016 1.       Observe the diagram carefully and answer the following questions.                                                                    (3)

CHEMICAL COORDINATION AND INTEGRATION 2013 MARCH 1.       Fill the table appropriately. (2)

CHEMICAL COORDINATION AND INTEGRATION 2016    MARCH 1.       Hormonal abnormality is responsible for certain diseases in man. List of some diseases are given below. Write the hormone related to each of it.       (2)

HUMAN REPRODUCTION 2013 MARCH 1.     The following statements compare the process of oogenesis & spermatogenesis. Which one is not true? (1)

HUMAN REPRODUCTION 2016 MARCH 1.     Match the columns A and B: (2)

REPRODUCTIVE HEALTH 2013 MARCH 1.       Suggest the ART which may be successful in the following conditions. (½ + ½ + 2=3)

REPRODUCTIVE HEALTH 2016 MARCH 1.       Categorize the given birth control methods into three groups with proper heads.

PRINCIPLES OF INHERITANCE AND VARIATION 2013 MARCH 1.       Identify the traits from the pedigree chart. Give one example each. (1+1 =2)

PRINCIPLES OF INHERITANCE AND VARIATION 2016 MARCH 1.       Which of the following is not a Mendelian disorder?

MOLECULAR BASIS OF INHERITANCE 2013 MARCH 1.       The flow of genetic information is shown below. Name the processes a, b, c & d. (4 x ½ =2)

MOLECULAR BASIS OF INHERITANCE 2016 MARCH 1.       Result of a famous experiment is given in the figure. Answer the questions.

EVOLUTION 2013 MARCH 1.       Arrange the following examples under two heads viz- homologous organs and analogous organs.              (Score: 2)

EVOLUTION 2016 MARCH 1.       Which theory talks about the huge explosion that leads to origin of universe?                  (Score: 1)

HUMAN HEALTH AND DISEASES 2013 MARCH 1.       Most often HIV infection occurs due to conscious behavior patterns. Do you agree with this statement? Substantiate your answer. (2)

HUMAN HEALTH AND DISEASES 2016 MARCH 1.       Identify the disease shown in the following figure and write the causative organism of the disease.             (Score: 1)

MICROBES IN HUMAN WELFARE 2013 MARCH 1.       Some bioactive molecules, their source and their medical importance are given in table. Fill up the missing parts. (2)

MICROBES IN HUMAN WELFARE 2016 MARCH 1.       “BOD is commonly calculated as an index of water pollution.”

BIODIVERSITY AND CONSERVATION 2012 SAY 1.       Last 20 years alone have witnessed the disappearance of 27 animal species from earth.

BIODIVERSITY AND CONSERVATION 2016     MARCH 1.       Observe the concept diagram of the Evil Quartet of biodiversity loss.

ENVIRONMENTAL ISSUES 2010 MARCH 1.      Destruction of forest leads to the increase of CO 2 in atmosphere. Recently Govt. of India instituted an award for individuals or communities from rural areas that shown ex…

ENVIRONMENTAL ISSUES 2013 MARCH NO QUESTIONS 2013 SAY 1.      In a study conducted, the concentration of DDT found to increase in the successive trophic levels. The result of the study is shown below.

ENVIRONMENTAL ISSUES 2016 MARCH 1.      Increase in the concentration of toxicants at successive trophic level is called

ECOSYSTEMS 2010 MARCH 1.      During a study tour teacher showed the primary colonizers on the banks of the river ‘Nila’.

ECOSYSTEMS 2013 MARCH 1.      Final community that is in near equilibrium with environment in ecological succession is called (1)

ECOSYSTEMS 2016 MARCH 1.      Nutrients are never lost from the ecosystems and are recycled. Write about

ORGANISMS AND POPULATIONS 2010 MARCH 1.      Given below is a table which shows the interspecific interaction. ‘+’ sign indicates beneficial, ‘-‘ sign indicates detrimental and ‘0’ indicates neutral.

ORGANISMS AND POPULATIONS 2013 MARCH 1.      Read the statements below and identify the mode of interaction between the species. (2)

ORGANISMS AND POPULATIONS 2016 MARCH 1.      a) Population interactions may be beneficial or not. Write any three interactions in detail.                             (Scores: 3)

BIOTECHNOLOGY AND ITS APPLICATIONS 2010 MARCH 1.      Teacher asked Balan to write the principle of RNAi technology. Help him by describing the method. (1)

BIOTECHNOLOGY AND ITS APPLICATIONS 2013 MARCH 1.      A novel strategy to prevent nematode manifestation is based on ‘RNA interference’.

BIOTECHNOLOGY AND ITS APPLICATIONS 2016 MARCH 1.      The recombinant DNA technological process has made immense impact in the area of healthcare. How Eli Lilly produced Insulin? (Scores: 2)

BIOTECHNOLOGY- PRINCIPLES AND PROCESSES 2010 MARCH 1.      Raju is searching blight resistant plants for his crossing experiments. Unfortunately no such varieties are available.

BIOTECHNOLOGY- PRINCIPLES AND PROCESSES 2013 MARCH 1.      Jaya read in a Biotechnology book that alien DNA can be introduced into host cell by microinjection and biolistics. Explain these methods. (2)

BIOTECHNOLOGY- PRINCIPLES AND PROCESSES 2016 MARCH 1.

STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION 2010 MARCH 1.      Johny, a Plus Two student is from a tribal colony with lower level of vitamins, minerals and protein deficiency. He wishes to be a plant breeder to help…

STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION 2013 MARCH 1.      MOET is a programme for herd improvement. Expand MOET. (1)

STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION 2016 MARCH 1.      (a) Resistance is the ability to prevent the pathogen from causing disease.

SEXUAL REPRODUCTION IN FLOWERING PLANTS 2010 MARCH 1.      Given below in the diagram showing the transfer of pollen grains.

SEXUAL REPRODUCTION IN FLOWERING PLANTS 2013 MARCH 1.      After syngamy and triple fusion in embryo sac, embryo will be diploid and endosperm will (1)

SEXUAL REPRODUCTION IN FLOWERING PLANTS 2015 MARCH 1.      (a) Reeja a science student observed the structure of mature embryo sac comprising antipodals, central cells and egg apparatus. Explain each one of them.       …

REPRODUCTION IN ORGANISMS 2010 MARCH 1.      Fill up the blanks after reading the statement: (1) The post fertilization events in angiosperms.

2013 MARCH 1.      In honeybees and some lizards female gamete undergoes development to form new organisms without fertilization. This phenomenon is called ………….. (1)

REPRODUCTION IN ORGANISMS 2016 MARCH 1.      When a gamete without any fusion develop into a new organism the phenomenon is called a)      Syngamy                       (b)    External fertilization

ANIMAL KINGDOM 2016 MARCH 1.       The characteristic features of an invertebrate is given. “The phylum includes the comb jellies, also called walnuts. They are noted for their bioluminescence and comb plates.” Identify…