Short Notes on Biology Part I

1. Melvin Kelvin was awarded Nobel Prize for his work on Photosynthesis
2. The largest flower in the world is Refflessia and the smallest one is wolfessia.
3. Penicillin is obtained from penicillium Notatum.
4. Reserpine derived from the plant 'serpentine' is used to alleviate high blood pressure.
5. Plants, living in acidic soils, are calledoxalophytes.
6. Photosynthesis is most active in blue and red light in which light energy is converted into chemical energy and 02 is not a limiting process during this process.
7. The smallest bone, lies stapes is found in the human ear.
8. Enzymes are basically proteins.
9. Mitochondria is called the 'power house of the cell'
10. Pancreas is both an endocrine andexocrine gland.
11. Persons of blood group '0' are called 'Universal Donor' while that of 'AB' are called 'Universal Acceptors'.
12. Seedless fruits are formed by parthenogenesis.
13. Simple plants that contain no chlorophyll are called fungi.
14. Spirogyra is commonly known as 'pond silk'
15. The longest muscle in the human body is found in thigh.
16. In a leaf, the opening between two guard cells is stomata.
17. Gibberellins are responsible for cell elongation.
18. The chemical name of chlorophyll is magnesium Dihydro prophysin.
19. Bile is produced in liver and stored in gel bladder.
20. All arteries, except pulmonary artery carry oxygenated blood.
21. The main function of W.B. C. is to produce antibodies.
22. Retina in the eye, acts as a film in the camera.
23. Human tears contain a mild antibacterial agent, named Lysozyme.
24. The biggest bone in the human body is femur.
25. Vitamin B12 is almost never found in plants.
26. Agrostology is the study of grasses.
27. Phycology is the study of a algae while the study of fossils is called paleontology
28. Hydroponics is cultivating plants without using soil.
29. Palco botany is the study of fossils ofbotanical specimens.
30. Pepsin & Lactose enzymes ad on proteins in the digestive system.
31. The water soluble vitamins are vitamin B and C
32. A chemical change in DNA moleculeis called mutation.
33. Glycogen acts as a short ­term food reserve in animals.
34. Estrogen is a female sex hormone.
35. The enzyme amylase aids in the digestion of starch.
36. ATP synthesis takes place in mitochondria.
37. 70% of the body weight of a man is water.
38. The tough transparent membrane that protects the eye ball is called cornea.
39. Energy is produced in human body by Carbohydrates.
40. Sugar is the product of the dark reactions of photosynthesis.