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NEET Exam  >  NEET Test  >  Biology Class 11  >  Test: Kingdom Monera - 2 - NEET MCQ

Kingdom Monera - 2 - NEET Biology Class 11 Free MCQ Test with solutions


MCQ Practice Test & Solutions: Test: Kingdom Monera - 2 (10 Questions)

You can prepare effectively for NEET Biology Class 11 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Kingdom Monera - 2". These 10 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Kingdom Monera - 2 - Question 1
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Halophiles, methanogens and thermoacidophiles are

Detailed Solution: Question 1

Methanogens , Halophiles , Thermoacidophils , all belong to ARCHAEBACTERIA. They are primitive organisms which means they were the first to inhabit earth . They are often called LIVING FOSSILS. Methanogens are found in Rumen of cattles , Halophiles are found in salt lakes , Thermoacidophils are found in hot sulphur springs and Archaebacteria are found in some of the harsh climatic conditions where no other life form could survive.

Topic in NCERT: Archaebacteria

Line in NCERT: "These bacteria are special since they live in some of the most harsh habitats such as extreme salty areas (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens)."

Test: Kingdom Monera - 2 - Question 2
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Causes of water bloom is :-

Detailed Solution: Question 2

These are a result of blue-green algae, which are actually bacteria (cyanobacteria). Some algal blooms are the result of an excess of nutrients (particularly phosphorus and nitrogen) in waters and higher concentrations of these nutrients in water cause increased growth of algae and green plants.
Topic in NCERT: Eubacteria
Line in NCERT: They often form blooms in polluted water bodies

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Test: Kingdom Monera - 2 - Question 3
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Cyanobacteria is the new name of :-

Detailed Solution: Question 3

Cyanobacteria is the modern name of Myxophyceae. It is also called blue-green algae. It is a prokaryotic photosynthetic organism.

Topic in NCERT: Eubacteria

Line in NCERT: "The cyanobacteria (also referred to as blue-green algae) have chlorophyll a similar to green plants and are photosynthetic autotrophs."

Test: Kingdom Monera - 2 - Question 4
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Bacteria reproduce by ___________

Detailed Solution: Question 4

Bacteria reproduce mainly by fission. Sometimes, under unfavourable conditions, they produce spores. They also reproduce by a sort of sexual reproduction by adopting a primitive type of DNA transfer from one bacterium to the other

Topic in NCERT: KINGDOM MONERA

Line in NCERT: "Bacteria reproduce mainly by fission. They also reproduce by a sort of sexual reproduction by adopting a primitive type of DNA transfer from one bacterium to the other."

Test: Kingdom Monera - 2 - Question 5
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Photosynthetic autotrophic prokaryotic organism is:-

Detailed Solution: Question 5

cyanobacteria (also referred to as blue-green algae) have chlorophyll a similar to green plants and are photosynthetic autotrophs.The cyanobacteria are unicellular, colonial or filamentous, freshwater/marine or terrestrial algae. The colonies are generally surrounded by gelatinous sheath. They often form blooms in polluted water bodies. Some of these organisms can fix atmospheric nitrogen in specialised cells called heterocysts, e.g., Nostoc and Anabaena.

Topic in NCERT: Eubacteria

Line in NCERT: "The cyanobacteria (also referred to as blue-green algae) have chlorophyll a similar to green plants and are photosynthetic autotrophs."

Test: Kingdom Monera - 2 - Question 6
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Which of the following are wall less prokaryote?

Detailed Solution: Question 6

Mycoplasma is a prokaryote having no cell wall so they are also called "bacteria with their coats off".They are resistant to penicillin because penicillin acts as a cell wall and they are wall less.

Topic in NCERT: KINGDOM MONERA

Line in NCERT: "The Mycoplasma are organisms that completely lack a cell wall."

Test: Kingdom Monera - 2 - Question 7
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Most common method of reproduction in prokaryotes is:-

Detailed Solution: Question 7

Fission or Binary fission ("division in half") is a kind of asexual reproduction. It is the most common form of reproduction in prokaryotes such as bacteria. It occurs in some single-celled Eukaryotes like the Amoeba and the Paramoecium. In binary fission, DNA replication and segregation occur simultaneously.

Topic in NCERT: KINGDOM MONERA

Line in NCERT: "Bacteria reproduce mainly by fission (Figure 2.3)."

Test: Kingdom Monera - 2 - Question 8
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identify the correct statement 

STATEMENT I :  Halophiles are eubacteria living  in salty areas

STATEMENT II  :Methanogens are abudant in guts of ruminants .

STATEMENT III : Thermoacidophiles are bacteria living in hot springs 

Detailed Solution: Question 8

- Correct Answer: B: BOTH II AND III
- Explanation:

STATEMENT I : Halophiles are eubacteria living  in salty areas - HALOPHILES are archaebacteria not eubacteria 
- Statement II: Methanogens are indeed abundant in the guts of ruminants. These are a group of archaea that produce methane as a byproduct of metabolism in the digestive systems of ruminant animals like cows.
- Statement III: Thermoacidophiles are bacteria that thrive in hot, acidic environments like hot springs, demonstrating their ability to survive in extreme conditions.

Topic in NCERT: Archaebacteria

Line in NCERT: "These bacteria are special since they live in some of the most harsh habitats such as extreme salty areas (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens)."

Test: Kingdom Monera - 2 - Question 9
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What do chemosynthetic autotrophic bacteria oxidize for their ATP production?

Detailed Solution: Question 9

Chemosynthetic autotrophic bacteria oxidize inorganic substances for their ATP production.

Topic in NCERT: Eubacteria

Line in NCERT: "Chemosynthetic autotrophic bacteria oxidise various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for their ATP production."

Test: Kingdom Monera - 2 - Question 10
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Assertion (A): Cyanobacteria can fix atmospheric nitrogen through specialized cells known as heterocysts.

Reason (R): Heterocysts are found in all types of cyanobacteria, including those that do not participate in nitrogen fixation.

Detailed Solution: Question 10

Corrected Solution: - The Assertion is true because cyanobacteria, such as Nostoc and Anabaena, are known to have specialized cells called heterocysts that enable them to fix atmospheric nitrogen.

- The Reason is false because heterocysts are not found in all cyanobacteria. Only certain species possess heterocysts specifically for nitrogen fixation, while others may not have this capability.

- Therefore, the Assertion is true, but the Reason is false, as it inaccurately generalizes the presence of heterocysts in all cyanobacteria.

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About this NEET Practice Test

This test contains 10 MCQs on Kingdom Monera - 2 with detailed solutions for each question. It is part of the Biology Class 11 course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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