Consider the following statements about Gram staining.
I. All bacteria whether Gram positive (+) or Gram negative (-) will stain bluish-purple when stained with crystal voilet.
II. Gram negative bacteria appears pink on staining with safranin.
III. Iodine in Gram staining acts as a mordant.
IV. Alcohol treatment is required after Crystal Voilet lodine (CVI) complex.
Choose the correct option.

Gram negative bacteria do not take stain- Give reason.

How Gram positive and Gram negative bacteria react on Gram staining process?

Colour revealed by Gram positive bacteria after Gram staining is ……………

Bacteria which retain purple colour after staining with Gram stain is

Bacteria which retain purple colour after staining with Gram stain is

Bacteria which retain purple colour after staining with Gram stain is

The stain used to distinguish Gram positive bacteria from Gram negative ones is

In Gram staining of bacteria, basic dye and mordant used are I. crystal violet II. iodine III. ethanol IV. ethanol-acetone solution

Read the following statement regarding bacteria. I. Bacteria exchange their genetic matter through conjugation which involve cell to cell contact. II. Transduction in 'Salmonella is reported by Tatum and Lederberg in 1952. III. Citrus canker disease is caused by bacteria Xanthomonas citri. IV. Hans Christian gram's staining method is based on cell wall composition of bacteria. Choose the correct option with true statements

State whether the following statements are true or false. When treated with crystal violet and subsequently with iodine some bacteria remain colorless and these are called gram '+ve' bacteria. A. True B. False