| | | | MCQ Tutorial - General Knowledge->Biology | | | | 1.) Ordinary table salt is sodium chloride. What is baking soda? | | Options are: | | A.) Potassium carbonate
| | B.) Sodium bicarbonate
| | C.) Potassium chloride
| | D.) Potassium hydroxide
| | Correct Option: B | | | | | | | 2.) Ozone hole refers to | | Options are: | | A.) Hole in ozone layer
| | B.) Decrease in thickness of ozone layer in stratosphere
| | C.) Increase in the thickness of ozone layer in troposphere
| | D.) Decrease in the ozone layer in troposphere
| | Correct Option: B | | | | | | | 3.) 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 | | Options are: | | A.) Gymnosperms
| | B.) Monocotyledons
| | C.) Dicotyledons
| | D.) Angiosperms
| | Correct Option: A | | | | | | | 4.) Pollination is best defined as | | Options are: | | A.) Visiting flowers by insects
| | B.) Growth of pollen tube in ovule
| | C.) Transfer of pollen from anther to stigma
| | D.) Germination of pollen grains
| | Correct Option: C | | | | | | | 5.) Plants receive their nutrients mainly from | | Options are: | | A.) Soil
| | B.) Light
| | C.) Chlorophyll
| | D.) Atmosphere
| | Correct Option: C | | | | | | | | | | | |