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.

All the given statements about bryophytes are true.

1.  They are called amphibians of the plant kingdom.

2. The presence of a special tissue is found in these for the flow of

3. Moss (Funaria) and Marchantia are examples of bryophytes.

1. Nyctalopia (night blindness) is caused by deficiency of Vitamin A.

2. Foods rich in Vitamin A are carrots, spinach, sweet potatoes, lettuce, etc.

3. Vitamin A deficiency can cause damage to rod cells, which reduces the ability to see in low light.

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.