Top 25+ The Living World - Biology Questions and Answers For NEET 2024 Exam Preparation

Q1. Which one of the following animals is correctly matched with its particular taxonomic category?

1. Humans - primata, family
2. Tiger - Tigris, species
3. Cuttlefish - mollusca, class
4. Housefly - Musca, order

Answer: (b)

Binomial nomenclature system of naming organisms using a two­part Latinized (or scientific) name that was devised by the Swedish botanist Linnaeus (Carl Linne); it is also known as the Linnaean system.

The first part is the generic name, the second is the specific name. Zoological name of tiger is Panthera tigris. So, tigris is species name of Tiger.

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Q2. The basic unit of classification is –

1. Species
2. Genus
3. Order
4. All of these

Answer: (a)

The basic unit of classifications is species.

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Q3. Growth cannot be taken as a defining property of living organisms because

1. Non-living things also grow from inside.
2. All living organism do not show growth.
3. Non-living things also grow.
4. Some living organism does not exhibit the process of reproduction.

Answer: (c)

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Q4. The term phylum was given by

1. Theophrastus
2. Cuvier
3. Haeckel
4. Linnaeus.

Answer: (c)

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Q5. Which biological name is wrongly written?

1. Triticum aestivum
2. Apis indica
3. Felis domesticus
4. Mangifera Indica

Answer: (d)

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Q6. Practical significance of taxonomy is –

1. To understand diversity
2. Classification
3. To understand evolution
4. Identification of organisms

Answer: (d)

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Q7. The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for

1. growth and movement
2. interaction with the environment and progressive evolution
3. reproduction
4. responsiveness to touch.

Answer: (d)

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Q8. Study of fossils is

1. Saurology
2. Palaeontology
3. Herpetology
4. Organic evolution

Answer: (b)

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Q9. 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

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

Answer: (b)

Herbarium is a storehouse of collected plant specimens that are dried, pressed and preserved on paper sheets.

Herbarium sheet is 41 × 39 $cm^{2} (16 1/2 × 11 1/2 inches^{2}).$

It serves two primary functions–

1. Accurate identification
2. Alpha taxonomic research. (based on gross morphology)

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Q10. The order generally ends with :

1. Aceae
2. Ales
3. Eae
4. None of these

Answer: (b)

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Q11. The common characteristics between tomato and potato will be maximum at the level of their

1. Family
2. Genus
3. Order
4. Division

Answer: (a)

Families are characterised on the basis of both vegetative and reproductive features of plant species. Tomato (Lycopersicon esculentum) and potato (Solanum tuberosum) belong to the same family Solanaceae.

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Q12. Which of the following statement is incorrect?

1. Interactions among the molecular components of the organelles result into the properties of cell organelles.
2. All plants, animals, fungi and microbes exhibit metabolism.
3. Properties of cellular organelles are present in the molecular constituents of the organelles.
4. Celluar organization of the body is the defining feature of life forms.

Answer: (c)

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Q13. Which type of organisation is found in only living beings ?

1. Molecular
2. Atomic
3. Mixture
4. Sub-cellular

Answer: (d)

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Q14. Select the incorrect statement from the following.

1. Taxonomic keys are tools that helps in identification based on characterstics.
2. Each statement in key is called lead.
3. ICZN stands for International Code of Zoological Nomenclature.
4. Ernst Mayr used the system a Nature as the title of his publication.

Answer: (d)

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Q15. The name of a plant written on herbarium sheet is its

1. Local name
2. English name
3. Botanical name
4. All of these

Answer: (d)

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Q16. Two plants can be conclusively said to belong to the same species if they

1. can reproduce freely with each other and form seeds.
2. have same number of chromosomes.
3. have more than 90 per cent similar genes.
4. look similar and possess identical secondary metabolites.

Answer: (a)

Two plants can be conclusively said to belong to the same species if they can reproduce freely with each other and form seeds. The formed seed must be viable. Two animals can be regarded as species when they can interbreed each other and form fertile progeny.

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Q17. Which of the following is most important for speciation ?

1. Reproductive isolation
2. Seasonal isolation
3. Behavioural isolation
4. Temporal isolation

Answer: (a)

The most important process for formation of new species is reproductive isolation as this prevents interbreeding in between members of a population, thus giving rise to new species.

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Q18. The term "New Systematics" was introduced by

1. Julian Huxley
2. Bentham and Hooker
3. Linnaeus
4. A.P. de Candolle.

Answer: (a)

The term "New Systematics" was given by Julian Huxley (1940). This classification takes into account the cytological, morphological, genetical, anatomical, palynological and physiological characters.

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Q19. Which one of the following has least similar characters?

1. Class
2. Family
3. Genus
4. Species

Answer: (a)

The number of similar characters of categories decreases from lowest rank to highest rank in a taxonomic hierarchy. Out of the given categories i.e., family, class, genus and species, the class being the highest category possesses the least similar characters.

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Q20. Which of the following is an automatically created name?

1. Synonym
2. Autonym
3. Homonym
4. Tautonym

Answer: (b)

Autonyms are automatically created names as regulated by the International code of Nomenclature for algae, fungi, and plants.

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Q21. Amongst the given taxonomic aids, how many are associated with preservation of specimens?

Monograph, Flora, Key, Museums, Botanical Gardens, Catalogue, Herbarium, Manual

1. Three
2. One
3. Two
4. Four

Answer: (c)

Herbarium and Botanical Gardens only have preserved specimens. Rest all taxonomic aids have living organisms or their listed descriptions.

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Q22. Growth development and functioning of living body is due to -

1. Homeostasis
2. Order
3. Metabolism
4. Adaptation

Answer: (c)

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Q23. Mark the correct statement

1. Plants grow only up to a certain age.
2. Only living organisms grow.
3. The growth in living organisms is from inside.
4. All of these

Answer: (c)

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Q24. Which of the following statements regarding growth is incorrect?

1. Growth exhibited by non-living objects is by accumulation of material on the surface.
2. In plants, growth by cell division is seen only up to a certain stage.
3. A multicellular organism grows by cell division.
4. Growth in in vitro culture of unicellular organisms can be observed by counting the number of cells.

Answer: (b)

In plants, growth by cell division occurs continuously throughout their life span. This continuous growth in plant is axial (i.e., takes place on two axes) and unique.

Plant growth consists of primary and secondary growth, on the basis of time when it occurs.

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Q25. The sum total of all the chemical reactions occurring in our body is known as

1. growth
2. metabolism
3. regeneration
4. reproduction

Answer: (b)

Catabolism – breakdown of substances eg., Respiration

Anabolism – Formation of substances. eg., Photosynthesis.

Catabolism + Anabolism = Metabolism.

These are defining features of all life forms. Simultaneous Catabolism and Anabolism called as Amphibolism.

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