Biology Quiz 1

1. Plants absorb dissolved nitrates from soil and convert them into





2. Most fish do not sink in water because of the presence of
  1. swim bladder
  2. air bladder
  3. air sacs
  4. air in spongy bones





3. Movement of cell against concentration gradient is called





4. Pollination is best defined as





5. Ozone hole refers to





6. Plants synthesis protein from





7. Photosynthesis generally takes place in which parts of the plant?





8. Plants receive their nutrients mainly from





9. Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to





10. Ordinary table salt is sodium chloride. What is baking soda?