Biology Questions Answers

  • 1. Among the biotic components of the ecosystem, the producer system is ?

    1. Sea
    2. Rivers
    3. Green Plants
    4. Animals
    Answer And Explanation

    Answer: Option C

  • 2. Which of has following group of gases contribute to the 'Green House Effect' ?

    1. Carbon tetrafluoride and Nitrous oxide
    2. Carbon monoxide and Sulphur dioxide
    3. Ammonia and Ozone
    4. Carbon dioxide and Methane
    Answer And Explanation

    Answer: Option D

  • 3. Which one of the following disease is not transmitted by tiger mosquitoes ?

    1. Dengue
    2. Chikungunya
    3. Japanese Encephalitis
    4. Yellow fever
    Answer And Explanation

    Answer: Option C

  • 4. Which one of the following air pollution can affect blood stream leading to death ?

    1. Cadmium
    2. Asbestos dust
    3. Carbon monodioxide
    4. Lead
    Answer And Explanation

    Answer: Option C

  • 5. What is Pollination ?

    1. germination of pollen grains
    2. growth of pollen tube in ovule
    3. transfer of pollen from anther to stigma
    4. visiting flowers by insects
    Answer And Explanation

    Answer: Option C

  • 6. Plants receive their nutrients mainly from ?

    1. atmosphere
    2. chlorophyll
    3. light
    4. soil
    Answer And Explanation

    Answer: Option D

  • 7. What is movement of cell against concentration gradient is called

    1. osmosis
    2. active transport
    3. diffusion
    4. passive transport
    Answer And Explanation

    Answer: Option B