GK Biology Questions and Answers
General Knowledge Biology Questions with Answers test knowledge of plants, animals, and human biology. Commonly seen in SSC, UPSC, and NDA exams, they help candidates strengthen concepts of life sciences
GK Biology
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77 questions
1. Ordinary table salt is sodium chloride. What is baking soda?
- Potassium chloride
- Potassium carbonate
- Potassium hydroxide
- Sodium bicarbonate
2. Ozone hole refers to
- hole in ozone layer
- decrease in the ozone layer in troposphere
- decrease in thickness of ozone layer in stratosphere
- 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
- angiosperms
- gymnosperms
- monocotyledons
- dicotyledons
4. Pollination is best defined as
- transfer of pollen from anther to stigma
- germination of pollen grains
- growth of pollen tube in ovule
- visiting flowers by insects
6. Movement of cell against concentration gradient is called
- osmosis
- active transport
- diffusion
- passive transport
7. Photosynthesis generally takes place in which parts of the plant?
- Leaf and other chloroplast bearing plants
- steam and leaf
- Roots and chloroplast bearing plants
- Bark and leaf
9. Plants absorb dissolved nitrates from soil and convert them into
- free nitrogen
- urea
- ammonia
- proteins
10. Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with
- all gymnosperms, except conifers
- only angiosperms
- only conifers
- angiosperms and all gymnosperms except conifers