Question

X helps in the
preparation of curd.
Y is used to
manufacture
antibiotics.
Z helps in nitrogen
fixation.
Identify X, Y, and Z.
X
Lactobacillus, Y
Rhizobium, Z-
Penicillium
X-Rhizobium, Y
Lactobacillus,
Z - Penicillium
Х
Lactobacillus. Y
Penicillium, Z-
Rhizobium
X-Penicillium, Y
Rhizobium. Z
Lactobacillus​

Answer 1

Answer:

X - Lactobacillus

Y - Penicillium

Z - Rhizobium

Answer 2

X : Lactobacillus

Y : Penicillium

Z : Rhizobium

Reason for such choice of answers:

• Lactobacillus produces lactic acid which can coagulate the milk protein (casein) into calcium paracaseinate which is the main constituent of curd. Small amount of Lactobacillus species is added as inoculum into lukewarm milk and churned. The local acidic environment created by the bacteria results in production of curd.

• Penicillium notatum is the first fungal species discovered by scientist Alexander Fleming which could be used to produce an antibiotic (Penicillin) with the wide spectrum of activity.

• Rhizobium is a nitrogen fixing bacteria responsible for continuation of the nitrogen cycle in between the atmosphere and the soil.

$\star$ Hope It Helps.