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NEET Exam  >  NEET Tests  >  Topic-wise MCQ Tests for NEET  >  Assertion & Reason Test: Biological Classification - NEET MCQ

Assertion & Reason Test: Biological Classification - NEET MCQ


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10 Questions MCQ Test Topic-wise MCQ Tests for NEET - Assertion & Reason Test: Biological Classification

Assertion & Reason Test: Biological Classification for NEET 2024 is part of Topic-wise MCQ Tests for NEET preparation. The Assertion & Reason Test: Biological Classification questions and answers have been prepared according to the NEET exam syllabus.The Assertion & Reason Test: Biological Classification MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Assertion & Reason Test: Biological Classification below.
Solutions of Assertion & Reason Test: Biological Classification questions in English are available as part of our Topic-wise MCQ Tests for NEET for NEET & Assertion & Reason Test: Biological Classification solutions in Hindi for Topic-wise MCQ Tests for NEET course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Assertion & Reason Test: Biological Classification | 10 questions in 20 minutes | Mock test for NEET preparation | Free important questions MCQ to study Topic-wise MCQ Tests for NEET for NEET Exam | Download free PDF with solutions
Assertion & Reason Test: Biological Classification - Question 1
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Mycoplasma are often called as PPLO (pleuropneumonia like organisms).

Reason : They are the simplest unicellular prokaryotes.

Detailed Solution for Assertion & Reason Test: Biological Classification - Question 1

et's analyze the assertion and reason:

Assertion (A): Mycoplasma are often called PPLO (pleuropneumonia-like organisms).

  • This is true. Mycoplasma, particularly Mycoplasma pneumoniae, were initially identified as the causative agents of pleuropneumonia in cattle, which is why they are referred to as PPLO.

Reason (R): They are the simplest unicellular prokaryotes.

  • This is also true. Mycoplasma are indeed the simplest forms of unicellular prokaryotes, lacking a cell wall and having a very small genome.

However, while both statements are true, the reason does not directly explain why Mycoplasma are called PPLO. The term PPLO is based on their role in causing pleuropneumonia, not their simplicity as prokaryotes.

Correct Answer: 2. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).

Assertion & Reason Test: Biological Classification - Question 2
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Viruses are considered organism.

Reason : Viruses are nucleoproteins that lack cell organelles.

Detailed Solution for Assertion & Reason Test: Biological Classification - Question 2
- Assertion (A) states that viruses are considered organisms, which is incorrect.
- Viruses do not meet the criteria to be classified as living organisms because they cannot reproduce independently and lack cellular structure.
- Reason (R) correctly notes that viruses are nucleoproteins without cell organelles, but this does not justify the assertion.
- Therefore, the correct answer is option 4: Assertion (A) is false but reason (R) is true.
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Assertion & Reason Test: Biological Classification - Question 3
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Some fungi are called as ‘imperfect fungi’.

Reason : Sexual reproduction is absent in some forms of fungi.

Detailed Solution for Assertion & Reason Test: Biological Classification - Question 3
The class deuteromycetes in fungi are known as “imperfect fungi” due to absence of sexual reproduction.
Assertion & Reason Test: Biological Classification - Question 4
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Euglenoids are  heterotrophic and autotrophic organisms.

Reason : Euglenoids have chlorophyll and can prepare their food in the presence or absence of sunlight.
Detailed Solution for Assertion & Reason Test: Biological Classification - Question 4

Euglenoids are both autotrophic and heterotrophic. They have chlorophyll and hence in the presence of sunlight they can prepare their food by the process of photosynthesis. In absence of sunlight, they behave like a predator and feed on other smaller microorganisms.

Assertion & Reason Test: Biological Classification - Question 5
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Assertion : Fungi are called cosmopolitan.

Reason : All fungi are non-edible.
Detailed Solution for Assertion & Reason Test: Biological Classification - Question 5
Fungi are found in most parts of the world and under varied ecological conditions. They are present in air, water, soil and on animals and plants around the world. That is why they are called cosmopolitan. Fungi are of two types – edible or non-edible ones. Few fungi like Mushroom are used as nutritious food. Some fungi produce toxins such as phallotoxins and amatoxins so, they cannot be consumed for example, Toadstools or poisonous fungus are those which produce toxins.
Assertion & Reason Test: Biological Classification - Question 6
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Whittaker's did not inculde unicellular green algae in prostista.

Reason : A distinction between unicellular and multicellular organisms is not possible in case of algae.
Detailed Solution for Assertion & Reason Test: Biological Classification - Question 6

A distinction between unicellular and multicellular organisms is not possible in case of algae. It is because of this unicellular green algae have not been included in kingdom Protista by Whittaker. Unicellular algae forms are placed in kingdom Protista but unicellular green algae are placed in Kingdom Plantae and not included in Protista due to their resemblance with other green algae.

Assertion & Reason Test: Biological Classification - Question 7
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Trichoderma, Colletotrichum are called ‘Imperfect fungi’.

Reason : Sexual reproduction is absent in these forms.
Detailed Solution for Assertion & Reason Test: Biological Classification - Question 7
Trichoderma, Colletotrichum are called as imperfect because sexual reproduction is absent in these forms.
Assertion & Reason Test: Biological Classification - Question 8
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Lichens are said to be dual organisms.

Reason : They show a symbiotic association between a fungus and an alga.
Detailed Solution for Assertion & Reason Test: Biological Classification - Question 8
Lichens are said to be dual organisms because they show a symbiotic association between a fungus and a alga.
Assertion & Reason Test: Biological Classification - Question 9
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Some bacteria can survive in extreme environmental conditions.

Reason : Archaebacteria are primitive prokaryotes.
Detailed Solution for Assertion & Reason Test: Biological Classification - Question 9
Some bacteria can survive in extreme environmental conditions like high temperature, high salt concentration, in absence of oxygen or in presence of oxygen in high acidic or alkaline pH. Such bacteria are called archaebacteria. Their cell wall consists of non-cellulosic poly-saccharide or protein and lacks peptidoglycan. This allows them to survive in extreme conditions .
Assertion & Reason Test: Biological Classification - Question 10
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Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Protozoans have physiological division of labour.

Reason : They have a well-developed cell , tissue and tissue organ system.
Detailed Solution for Assertion & Reason Test: Biological Classification - Question 10

Protozoa are microscopic unicellular eukaryotes hence they neither have a well-developed cell, tissue and tissue organ system nor physiological division of labour.

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