MCQs4All - Biology Collection

Biology MCQs for NTS, FPSC, CSS, PPSC, PMS, UTS, FTS, OTS, Teaching, CT, PTC, SST, B.Ed, M.Ed of past papers

Question. Lock and Key model was proposed by______________?
  1. Emil Fischer
  2. Koshland
  3. Robin Williams
  4. Rudolph Virchow
Question. Exoskeleton of a marine snail is composed of________________?
  1. CaPO4
  2. CaCO3
  3. CaSO4
  4. SiO2
Question. Coenocytic hyphae are also known as______________?
  1. Septate
  2. Perforated hyphae
  3. Aseptate
  4. Uninucleate hyphae
Question. Single circuit heart is found in_________?
  1. Fishes
  2. Amphibians
  3. Reptiles
  4. Mammals
Question. Which one is an organic compound_____________?
  1. CO2
  2. Water
  3. Lipids
  4. HCI
Question. Photosystem II has molecules which absorbs maximum light of___________?
  1. 680 nm
  2. 100 m
  3. 700 nm
  4. 670 nm
Question. Which of the following fishes excrete large volume of diluted urine?
  1. Bony Marine fishes
  2. Fresh water fishes
  3. Both depending upon the surrounding water
  4. None of these
Question. Visible light used in photosynthesis ranges from:__________?
  1. 300 – 700 nm in wavelength
  2. 350 – 750 nm in wavelength
  3. 380 – 750 nm in wavelength
  4. 390 – 790 nm in wavelength.
Question. Ribosomes were discovered by_______?
  1. Golgi
  2. De Duve
  3. Palade
  4. R.Brown
Question. _____________ is a nervous disorder characterized by involuntary tremors, diminished motor power and rigidity?
  1. Epilepsy
  2. Meningitis
  3. Alzheimer’s disease
  4. Parkinson’s disease
Question. One celled green ptotists are included in___________?
  1. Monera
  2. Algae
  3. Slime molds
  4. Plants
Question. Breeders have developed new and better varieties of food items by using which technique?
  1. Pasteurization
  2. Hydroponic culture technique
  3. Genetic engineering
  4. Biological control techniques
Question. Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________?
  1. Diffusion.
  2. Facilitated diffusion.
  3. Passive transport.
  4. Active transport.