• Malaria is a mosquito-borne infectious disease that affects humans and other animals.

• The disease is most commonly spread by an infected female Anopheles mosquito.

• The major natural source of the Vitamin D is synthesis of cholecalciferol in the lower layers of epidermis skin through a chemical reaction that is dependent on sun exposure.

• Ultraviolet B rays from sunlight is a large source of vitamin D

• Vitamin D from the diet, or from skin synthesis, is biologically inactive.

• Blood clotting prevents excessive bleeding when a blood vessel is injured.

• Platelets are small blood cells that help our body in blood clotting.

• Platelets are also known as “Thrombocytes”.

• Mitochondria is known as the powerhouses of the cell.

• The main function of mitochondria is to metabolize or break down carbohydrates and fatty acids to generate energy.

• Eukaryotic cells use energy in the form of a chemical molecule called ATP.

• The blood vessels that deliver oxygen-rich blood from the heart to the various parts of body are called arteries.

• Veins are blood vessels that carry deoxygenated blood to the heart.

• Septum is the cartilage in the nose that separates the nostrils.

• Capillaries are the smallest of blood vessels which distribute oxygenated blood from arteries to the tissues of the body and to deoxygenated blood from the tissues to veins.

● A wound stops bleeding due to the process of clot formation called coagulation.

● It potentially results in hemostasis, the cessation of blood loss from a damaged vessel, followed by repair.

* Daffodil is known as Narcissus botanically. It is also known as Trumpet narcissus.

* Daffodils are native to northern Europe and are grown in temperate climates around the world. They may be yellow, pink, white or orange in colour.

* It was formally introduced by Linnaeus in his work Species Plantarum in 1753.

* It is used in the production of galantamine for the treatment of Alzheimer's dementia. The daffodil is the national flower of Wales and the symbol of cancer charities in many countries.

* Beriberi is a disease caused by a vitamin B-1 deficiency.

* It is also known as thiamine deficiency.

* There are two types of the disease: wet beriberi and dry beriberi.

* Enzymes are proteins.

* Enzymes act as catalysts within living cells.

* Catalysts increase the rate at which chemical reactions occur without being consumed or permanently altered themselves.

* As a catalyst, an enzyme can facilitate the same chemical reaction over and over again.

• Ovum- The gamete produced by the female is called Ovum.

• Zygote- Fusion of male and female gametes forms Zygote.

• Embryo- Early stages of growth and development of an organism.

• Sperm- Sperm is the male reproductive cell in anisogamous forms of sexual reproduction.