Anil Ahlawat Solutions for Chapter: Microorganisms, Exercise 1: EXERCISES

Read the given passage and select the correct option for $X$ and $Y$.
Microorganisms are used for the large scale production of alcohol, wine and acetic acid. $X$ is used for commercial production of alcohol and wine. The process of conversion of sugar into alcohol is known as $Y$.

Match column I with column II and select the correct option from the codes given below. (There can be more than one match for column I.)

Identify the given microorganism and select the incorrect statement regarding it.

Refer to the given passage.
The mosquito $P$ is a carrier of virus that spreads a disease $Q$. Another mosquito $R$ is a carrier of protozoan $S$ that spreads a disease called $T$.
Select the option which correctly identifies $P, Q, R, S$ and $T$.

Refer to the given figures $P, Q, R$ and $S$.

          P                      Q                     R                    S      

Which of the following statements are correct regarding them?
(i) $P$ is the mould from which penicillin is made.
(ii) $R$ is considered as connecting link between plants and animals.
(iii) $Q$ and $S$ are parasites which live in the bodies of other organisms including human beings.
(iv) $R$ and $S$ bear chlorophyll and prepare food is presence of sunlight.
(v) $S$ is colonial form of algae.

Refer to the given outline of ${\mathrm{N}}_2$ cycle.

Identify $X$ and $Y$ and select the correct statement regarding this.

Refer to the given experimental set up as shown in the given figure and select the correct option regarding it.

Refer to the given figures of bacteria ($X, Y$ and $Z$) and read the statements (i, ii and iii) regarding them. Based on the given information, identify the bacteria and select the correct option.

(i) Bacteria $X$ causes cholera.
(ii) Bacteria $Y$ causes a disease which disrupts proper exchange of gases.
(iii) Bacteria $Z$ converts lactose sugar of milk into lactic acid.