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Read the given statements and select the...

Read the given statements and select the option that correctly fill the blanks in any two of them.
(a) Entamoeba histolytica causes ____(i)___ and Entamoeba gingivalis causes ____(ii)_____
(b) ____(i) ___ bacteria can fix atmospheric nitrogen into nitrates.
(c) ___(i)____ and ___(ii)___ are common bacteria that cause denitrification.

A

(a)-(i) Amoebiasis (ii)Food poisoning
(c )-(i) Rhizobium , (ii)Thiobacillus

B

(b)-(i) Rhizobium, (c )-(i) Thiobacillus , (ii) Pseudomonas

C

(a)-(i) Amoebiasis , (ii) Pyorrhoea
(b)-(i) Thiobacillus

D

(a)-(i)Pyorrhoea , (ii) Amoebiasis
(c ) - (i) Nitrosomonas , (ii) Pseudomonas

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to fill in the blanks in the statements provided. Let's analyze each statement step by step. ### Step 1: Analyze the first statement - **Statement (a)**: "Entamoeba histolytica causes ____(i)____ and Entamoeba gingivalis causes ____(ii)____." - **Entamoeba histolytica** is known to cause **amoebic dysentery** (also known as amoebiasis), which leads to severe diarrhea. - **Entamoeba gingivalis** is associated with **gum disease** or **periodontal disease**. ### Step 2: Analyze the second statement - **Statement (b)**: "____(i)____ bacteria can fix atmospheric nitrogen into nitrates." - The bacteria that are well-known for fixing atmospheric nitrogen into nitrates are **Rhizobium**. These bacteria form symbiotic relationships with leguminous plants. ### Step 3: Analyze the third statement - **Statement (c)**: "____(i)____ and ____(ii)____ are common bacteria that cause denitrification." - The two bacteria commonly associated with the process of denitrification are **Thiobacillus** and **Pseudomonas**. These bacteria convert nitrates into nitrogen gas, thus playing a crucial role in the nitrogen cycle. ### Final Answers Now, we can fill in the blanks: - (i) for Entamoeba histolytica: **amoebic dysentery** - (ii) for Entamoeba gingivalis: **gum disease** - (i) for nitrogen-fixing bacteria: **Rhizobium** - (i) and (ii) for denitrification bacteria: **Thiobacillus** and **Pseudomonas** ### Summary of the filled statements: (a) Entamoeba histolytica causes **amoebic dysentery** and Entamoeba gingivalis causes **gum disease**. (b) **Rhizobium** bacteria can fix atmospheric nitrogen into nitrates. (c) **Thiobacillus** and **Pseudomonas** are common bacteria that cause denitrification.
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