Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose. Inhaled air is moistened, warmed, and cleansed by the tissue that lines the nasal cavity.

1. The credit for developing the cholera vaccine in 1885 goes to Spanish-French bacteriologist and hygienist Jaime Ferrán.

2. He tested a live attenuated bacterial vaccine during a cholera epidemic in Valencia.

3. Jaime Ferrán's vaccine successfully protected people from cholera and began to be used in vaccination programs around the world.

1. Rickets is a bone disease caused by vitamin D deficiency.

2. Due to rickets, the absorption of calcium and phosphorus in the bones decreases.

3. The solution to protect exclusively breastfed babies from this disease is Vitamin D supplements.

1. Coral comes under the Cnidarian phylum of the animal kingdom.

2. Coral, also known as Coral and Mirajan, is a type of tiny sea creatures that live in groups numbering millions.

3. Coral, also known as Coral and Mirajan, is a type of tiny sea creature that lives in groups numbering millions.

1. Sponge belongs to Porifera phylum of the animal kingdom.

2. These are primitive multicellular animals. The study of sponges is known as para zoology.

3. Sponges are mostly irregular in shape and have radial symmetry.

4. The body of a sponge has two layers-

- Epidermis: This is the outer layer that helps move water in and out.

- Mesohyl: This is the middle layer which contains the cells of the sponge.