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NEET Exam  >  NEET Test  >  Biology Class 11  >  Test: Kingdom Monera - 1 - NEET MCQ

Kingdom Monera - 1 - NEET Biology Class 11 Free MCQ Test with solutions


MCQ Practice Test & Solutions: Test: Kingdom Monera - 1 (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 - 1". 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

Sign up on EduRev for free to attempt this test and track your preparation progress.

Test: Kingdom Monera - 1 - Question 1
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Cyanobacteria do not possess which feature?

Detailed Solution: Question 1

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.

Test: Kingdom Monera - 1 - Question 2
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Which of the following is the only group of organisms capable of using inorganic compounds as source of energy:

Detailed Solution: Question 2

Some of the bacteria are autotrophic, i.e., they synthesise their own food from inorganic substrates. They may be photosynthetic autotrophic or chemosynthetic autotrophic.

Topic in NCERT: Biological classification

Line in NCERT: "some of the bacteria are autotrophic, i.e., they synthesise their own food from inorganic substrates."

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Test: Kingdom Monera - 1 - Question 3
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Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms.

(i) Methanogens are archaebacteria which produce methane in marshy areas.

(ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen.

(iii) Chemosynthetic autotrophic bacteria synthesise cellulose from glucose.

(iv) Mycoplasma lack a cell wall and can survive without oxygen.

Detailed Solution: Question 3

Chemosynthetic autotrophic bacteria oxidise various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for their ATP production. They play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur.

Topic in NCERT: Eubacteria

Line in NCERT: "methanogens are present in the gut of several ruminant animals such as cows and buffaloes and they are responsible for the production of methane (biogas) from the dung of these animals." "some of these organisms can fix atmospheric nitrogen in specialised cells called heterocysts, e.g., nostoc and anabaena." "mycoplasma lack a cell wall and can survive without oxygen."

Test: Kingdom Monera - 1 - Question 4
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Identify distinctive features for kingdom Monera.

(a) It includes prokaryotic cells with nucleus and membrane bound cell organelles.
(b) Some of the Monerans are autotrophic and some of them are heterotrophic forms.
(c) Monera have been divided into two domains, archaeabacteria and eubacteria.
(d) Bacteria and diatoms  are the sole members of the Kingdom Monera.

Detailed Solution: Question 4

Let's examine the features:

(a) Incorrect. Kingdom Monera includes prokaryotic cells, which do not have a nucleus or membrane-bound organelles.

(b) Correct. Monerans (bacteria) can be autotrophic (e.g., cyanobacteria) or heterotrophic (e.g., most bacteria).

(c) Correct. Monera has been divided into two domains: Archaeabacteria and Eubacteria.

(d) Incorrect. only Bacteria are the sole members of the Kingdom Monera

Test: Kingdom Monera - 1 - Question 5
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Assertion: Mycoplasma is pathogenic both to animaLs and plants 
Reason: These organisms lack cell wall and can survive without oxygen 

Detailed Solution: Question 5

(B) - Mycoplasma is pathogenic to both animals and plants.
- These organisms lack cell walls and can survive without oxygen.
 

BOTH statements are true but reason is not the correct explaination of assertion 

Topic in NCERT: Kingdom monera

Line in NCERT: "the mycoplasma are organisms that completely lack a cell wall. they are the smallest living cells known and can survive without oxygen. many mycoplasma are pathogenic in animals and plants."

Test: Kingdom Monera - 1 - Question 6
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What is the primary function of heterocysts in certain cyanobacteria species?

Detailed Solution: Question 6

Heterocysts in cyanobacteria, such as Nostoc and Anabaena, serve the crucial function of nitrogen fixation. These specialized cells enable the conversion of atmospheric nitrogen into a form that can be utilized by the organism. This process is essential for the cyanobacteria to thrive in environments with limited nitrogen availability, contributing to the recycling of nutrients and supporting the overall ecosystem.

Topic in NCERT: Eubacteria

Line in NCERT: "some of these organisms can fix atmospheric nitrogen in specialised cells called heterocysts, e.g., nostoc and anabaena."

Test: Kingdom Monera - 1 - Question 7
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Assertion(A): Archaebacteria are special bacteria.
Reason(R): They live in harsh habitats.

Detailed Solution: Question 7

 Both (A) and (R) are true and (R) is the correct explanation of (A).
- Archaebacteria are unique bacteria that live in extreme environments like hot springs, acidic environments, and salt flats.
- Their ability to survive in such harsh habitats showcases their special nature.
- The reason given, that they live in harsh habitats, indeed explains why Archaebacteria are considered special.
- Therefore, option A is the correct choice.A)

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 - 1 - Question 8
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According to the three-domain system, how many domains do organisms from the Kingdom Monera belong to?

Detailed Solution: Question 8

The three-domain system has also been proposed that divides the Kingdom Monera into two domains, leaving the remaining eukaryotic kingdoms in the third domain and thereby a six kingdom classification

Topic in NCERT: Kingdom monera

Line in NCERT: "the three-domain system has also been proposed that divides the kingdom monera into two domains."

Test: Kingdom Monera - 1 - Question 9
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What is the primary role of heterotrophic bacteria in nature?

Detailed Solution: Question 9

Heterotrophic bacteria are most abundant in nature. The majority are important decomposers. Many of them have a significant impact on human affairs. They are helpful in making curd from milk, production of antibiotics, fixing nitrogen in legume  roots, etc. Some are pathogens causing damage to human beings, crops, farm animals and pets. Cholera, typhoid, tetanus, citrus canker are well known diseases caused by different bacteria.

Topic in NCERT: Kingdom monera

Line in NCERT: "heterotrophic bacteria are most abundant in nature. the majority are important decomposers."

Test: Kingdom Monera - 1 - Question 10
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Nitrogen fixation in legume roots is performed by:

Detailed Solution: Question 10

Nitrogen fixation in the roots of legumes is carried out by heterotrophic bacteria, such as Rhizobium. These bacteria live in the root nodules of leguminous plants and convert atmospheric nitrogen into forms that the plants can use for growth. Autotrophic bacteria, viruses, and protozoa do not perform this function in legume roots.

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About this NEET Practice Test

This test contains 10 MCQs on Kingdom Monera - 1 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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If you found this Kingdom Monera - 1 MCQ Test helpful, you can further enhance your NEET preparation with in-depth courses on EduRev, for all the subjects and topics available in Biology Class 11 course. The course offers:
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