A tendency to change with charge in environment

Disturbances in regulatory controls

Does not exchange material with environment

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NEET • BIOLOGY • LIVING WORLD

Living world practice · Mixed difficulty

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Showing 1-30 of 152 questions

1 Hard

1 of 152

Remembering +4 | -1

The taxon which includes related species is

View answer and explanation

Correct option: D

Genus

Option D (Genus) is correct because a genus is a group of related species.

2 Hard

2 of 152

Understanding +4 | -1

Amongst all the kingdoms, the only taxon that
exists in nature as a biologically cohesive unit is
the _____

View answer and explanation

Correct option: B

Species

Option B is correct because species is the only taxonomic rank that represents a naturally interbreeding population, making it a biologically cohesive unit.

3 Medium

3 of 152

Understanding +4 | -1

All living organisms are linked to one another because:

View answer and explanation

Correct option: B

They share common genetic material but to varying degrees

Option B is correct because all living organisms share a common ancestor and thus share genetic material, although the degree of similarity varies.

4 Hard

4 of 152

Remembering +4 | -1

Chromatophores are found in ______

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Correct option: A

Squids

Option A (Squids) is correct because chromatophores are pigment-containing cells found in squids, allowing them to change color.

5 Hard

5 of 152

Remembering +4 | -1

Each category of taxonomic hierarchy refers to as a unit of ______.

View answer and explanation

Correct option: D

Classification

Option D (Classification) is correct because each category in the taxonomic hierarchy represents a level of classification.

6 Easy

6 of 152

Understanding +4 | -1

Which of the following statements regarding universal rules of nomenclature is wrong?

View answer and explanation

Correct option: D

Biological names are generally in Greek and written in italics

Option D (Biological names are generally in Greek and written in italics) is wrong because biological names are generally derived from Latin, although they may have Greek origins, and are written in italics.

7 Hard

7 of 152

Understanding +4 | -1

Which of the following shows the correct example of taxonomic category - Genus?

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Correct option: A

Potato, tomato and brinjal belong to Solanum

Option A (Potato, tomato and brinjal belong to Solanum) is correct because Solanum is the genus to which potato, tomato, and brinjal belong.

8 Medium

8 of 152

Understanding +4 | -1

A living organism can be easily distinguished from non-living on the basis of

View answer and explanation

Correct option: A

Responsiveness to touch stimuli

Option A (Responsiveness to touch stimuli) is the correct answer because it is a fundamental characteristic that distinguishes living organisms from non-living things.

9 Medium

9 of 152

Remembering +4 | -1

Homeostasis is

View answer and explanation

Correct option: B

Tendency to resist internal changes

Option B (Tendency to resist internal changes) is correct because homeostasis is the process by which organisms maintain a stable internal environment despite external changes.

10 Easy

10 of 152

Remembering +4 | -1

An attribute found in plants but not animals is

View answer and explanation

Correct option: C

Autotrophy

Option C (Autotrophy) is correct because plants are capable of producing their own food through photosynthesis (autotrophy), while animals are heterotrophic and must obtain nutrients from other sources.

11 Easy

11 of 152

Understanding +4 | -1

Category among following is

View answer and explanation

Correct option: A

Species

Option A (Species) is correct because 'Species' is a fundamental taxonomic rank, while the others are higher-level groupings.

12 Hard

12 of 152

Understanding +4 | -1

Which of the following statement is not true?

View answer and explanation

Correct option: B

When the external temperature is warm, the superficial
blood vessels constrict to prevent loss of body heat

Option B is correct because superficial blood vessels dilate, not constrict, in warm temperatures to release body heat through radiation.

13 Easy

13 of 152

Remembering +4 | -1

Scientific name are printed (with english) and derived from

View answer and explanation

Correct option: B

Italics and Latin

Option B (Italics and Latin) is correct because scientific names are printed in italics and derived from Latin.

14 Easy

14 of 152

Remembering +4 | -1

In hierarchial classification, class occupied a place between

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Correct option: C

Phylum and order

Option C is correct because in the hierarchical classification system, class is positioned between phylum and order.

15 Easy

15 of 152

Remembering +4 | -1

True regeneration is found in

View answer and explanation

Correct option: C

Planaria

Option C (Planaria) is correct because Planaria exhibits true regeneration, where a severed piece can develop into a complete organism.

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16 Medium

16 of 152

Understanding +4 | -1

Families are characterised on the basis of both .....A..... and .....B..... features of plant species :

View answer and explanation

Correct option: B

A-Vegetative, B-Reproductive

Option B is correct because families are characterized based on both vegetative and reproductive features of plant species.

17 Medium

17 of 152

Analyzing +4 | -1

Assertion (A): Families are characterized on the basis of both vegetative and reproductive features of species.

Reason (R): Members of family can show morphological similarities, but unexceptionally none of the genera of same family can interbreed with each other.

View answer and explanation

Correct option: C

(A) is true but (R) is false

Option C ((A) is true but (R) is false) is correct because families are indeed characterized by both vegetative and reproductive features, but members of the same family can sometimes interbreed, though it's uncommon.

18 Easy

18 of 152

Remembering +4 | -1

A group of organisms with similar trait of any rank is

View answer and explanation

Correct option: A

Taxon

Option A (Taxon) is correct because a taxon is a group of organisms with similar traits at any rank.

19 Medium

19 of 152

Remembering +4 | -1

…A… is a collection of pressed, dried and preserved plants …B… labelled arranged systematically for further reference A and B in the above statement refers to

View answer and explanation

Correct option: B

A-herbarium; B-mounted on a paper sheet

Option B (A-herbarium; B-mounted on a paper sheet) is correct because herbaria are collections of dried plants mounted on paper sheets.

20 Medium

20 of 152

Analyzing +4 | -1

How many of the following will show the growth or increase in mass? Mountain, boulders, sand mound, dead organism, plants.

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Correct option: B

Four

Option B is correct because plants show intrinsic growth, and dead organisms increase in mass due to external accumulation, while mountains, boulders, and sand mounds increase in mass by accretion, which is not considered growth.

21 Medium

21 of 152

Remembering +4 | -1

The species confined to a particular region and not found elsewhere is termed as:

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Correct option: D

Endemic

Option D (Endemic) is correct because endemic species are confined to a particular region and not found elsewhere.

22 Medium

22 of 152

Remembering +4 | -1

Species is considered as

View answer and explanation

Correct option: C

Smallest taxon of faxonomy/classification

Option C (Smallest taxon of faxonomy/classification) is correct because species is the basic unit of classification and represents the smallest taxon.

23 Medium

23 of 152

Remembering +4 | -1

The sum total of all the chemical reactions occurring in the body is known as

View answer and explanation

Correct option: A

Metabolism

Option A (Metabolism) is correct because metabolism encompasses all chemical reactions, both anabolic (building up) and catabolic (breaking down), that occur within a living organism.

24 Easy

24 of 152

Understanding +4 | -1

Which is first step in taxonomy?

View answer and explanation

Correct option: B

Identification of the organism

Option B (Identification of the organism) is correct because before describing, naming, or classifying, an organism must first be correctly identified.

25 Medium

25 of 152

Understanding +4 | -1

Two animals belong to the same Kingdom but
different classes. They may belong to the
same ______

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Correct option: B

Phylum

Option B (Phylum) is correct because organisms in the same kingdom but different classes must share a higher taxonomic rank, such as phylum.

26 Hard

26 of 152

Understanding +4 | -1

Which of the following statements are correct about herbarium?

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Correct option: D

All of the above

Option D (All of the above) is correct because all the statements accurately describe the characteristics and functions of a herbarium.

27 Easy

27 of 152

Understanding +4 | -1

Species is considered as

View answer and explanation

Correct option: C

Real basic unit of classification

Option C (Real basic unit of classification) is correct because species are considered the fundamental unit in biological classification, representing a group of organisms capable of interbreeding.

28 Easy

28 of 152

Analyzing +4 | -1

Identify the mismatched
(A) Keys

\to

Analytical in nature,
(B) Monographs

\to

Artificial environments to animals,
(C) Zoos

\to

Natural habitats,
(D) Herbarium

\to

Quick referral systems

View answer and explanation

Correct option: A

B,C

Option B (Monographs

\to

Artificial environments to animals, Zoos

\to

Natural habitats) is correct because Monographs provide information on one taxon, and Zoos are artificial environments for animals.

29 Hard

29 of 152

Understanding +4 | -1

Which of the following is the correct sequence of the various steps of Herbarium formation?
(1) Drying
(2) Poisoning
(3) Collection
(4) Labelling
(5) Mounting
(6) Deposition
(7) Stitching

View answer and explanation

Correct option: A

3, 1, 2, 5, 7, 4, 6

Option A (3, 1, 2, 5, 7, 4, 6) is correct because it represents the standard order of steps in herbarium formation: Collection, Drying, Poisoning, Mounting, Stitching, Labelling, and Deposition.

30 Easy

30 of 152

Understanding +4 | -1

Choose the incorrect statement

View answer and explanation

Correct option: B

Reproduction is a defining character of living beings

Option B (Reproduction is a defining character of living beings) is correct because reproduction is not a defining characteristic as some organisms are sterile.

Revision notes and key takeaways

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Key Takeaways

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