6October'2012,Tuesday
Topic:Basic Biology Question.
| 1. |
Ordinary table salt is sodium chloride. What is baking soda? |
| A. |
Potassium chloride |
| B. |
Potassium carbonate |
| C. |
Potassium hydroxide |
| D. |
Sodium bicarbonate |
|
| 2. |
Ozone hole refers to |
| A. |
hole in ozone layer |
| B. |
decrease in the ozone layer in troposphere |
| C. |
decrease in thickness of ozone layer in stratosphere |
| D. |
increase in the thickness of ozone layer in troposphere |
|
| 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 |
| A. |
angiosperms | B. |
gymnosperms |
| C. |
monocotyledons | D. |
dicotyledons |
|
| 4. |
Pollination is best defined as |
| A. |
transfer of pollen from anther to stigma |
| B. |
germination of pollen grains |
| C. |
growth of pollen tube in ovule |
| D. |
visiting flowers by insects |
|
| 5. |
Plants receive their nutrients mainly from |
| A. |
chlorophyll | B. |
atmosphere |
| C. |
light | D. |
soil |
|
| 6. |
Movement of cell against concentration gradient is called |
| A. |
osmosis |
| B. |
active transport |
| C. |
diffusion |
| D. |
passive transport |
Answer: Option B
Explanation:
Active transport, this is the only
transport method that can move species against their concentration
gradient (from low to high concentration). Facilitated diffusion only
moves species down their concentration gradient from high to low
concentrati
|
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| 7. |
Photosynthesis generally takes place in which parts of the plant? |
|
| 8. |
Most fish do not sink in water because of the presence of
- swim bladder
- air bladder
- air sacs
- air in spongy bones
|
| A. |
I and II are correct |
| B. |
II and III are correct |
| C. |
III and IV are correct |
| D. |
I, II, III and IV are correct |
|
| 9. |
Plants synthesis protein from |
| A. |
starch |
| B. |
sugar |
| C. |
amino acids |
| D. |
fatty acids |
|
| 10. |
Plants absorb dissolved nitrates from soil and convert them into |
| A. |
free nitrogen |
| B. |
urea |
| C. |
ammonia |
| D. |
proteins |
|
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