General Science Questions (MCQs) for Competitive Examinations

Notes:
Apiculture is the practice of keeping bees as well as the manufacturing of honey and beeswax. A beekeeper (or apiarist) keeps bees in order to collect their honey and other products that the hive produce to pollinate crops, or to produce bees for sale to other beekeepers. A location where bees are kept is called an apiary or “bee yard.”

Notes:
Linseed are the seeds of the flax plant, which are the source of linseed oil and linseed cake. Flax is a member of the genus Linum in the family Linaceae. Linseed is one of the most potent sources of omega- 3 fatty acids found in nature.

Notes:
Vitamins A, D, E, and K are the fat-soluble vitamins. Unlike water-soluble vitamins, these vitamins dissolve in fat and are stored in body tissues. Too much vitamin A, D, or K (Hypervitaminosis) can lead to increased levels that are unhealthy and can cause health consequences. For example, too much vitamin A can lead to birth defects.

Notes:
In general, liver is a good source of vitamin A, iron, zinc, copper and manganese, and a very good source of protein. There are twenty grams of protein in a single slice of liver.

Notes:
Chloroplast, found in plant cells, is the site of photosynthesis in plants to prepare food(glucose) for the plant with the use of energy. It is a green plastid that contains chlorophylls A and B that absorb visible light energy and convert it to usable chemical energy in photosynthesis.

Notes:
Vitamin C also known as ascorbic acid is found in citrus fruit such as orange, lemon, lime, grapefruit, grapes etc. It protects the immune system, reduces the severity of allergic reactions and helps fight off infections.

Notes:
Plants that flower and fruit only once and then die are termed monocarpic or semelparous such as bamboo. The term was first used by Alphonse de Candolle. Other terms with the same meaning are hapaxanth and semelparous. The antonym is polycarpic, a plant that flowers and sets seeds many times during its lifetime; the antonym of semelparous is iteroparous. 

Notes:
Opium is the dried latex obtained from the opium poppy. Opium contains approximately 12% morphine, an alkaloid, which is frequently processed chemically to produce heroin for the illegal drug trade. The latex also includes codeine and non-narcotic alkaloids such as papaverine, thebaine and noscapine.

Notes:
In molybdenum-deficient plants grown in the presence of nitrate, molybdenum is required for the synthesis of nitrate reductase. Molybdenum deficiency results in the decrease of free amino acids in the plants in comparison to normal plants.

Notes:
In human anatomy, the pleural cavity is the potential space between the two pleura (visceral and parietal) of the lungs. The pleura is a serous membrane which folds back onto itself to form a two-layered membrane structure. In pleural cavity of thorax lies three lobes of lungs on right side and two on the left hand side.