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The Living World · Question 17

AIPMT 2011 (Mains)MCQEasy📈 Topic in 0% papers+4−1
1

Which one of the following aspects is an exclusive characteristic of living things?

  1. Isolated metabolic reactions occur in vitro
  2. Increase in mass from inside only
  3. Perception of events happening in the environment and their memory.
  4. Increase in mass by accumulation of material both on surface as well as internally.

Answer

(3) Perception of events happening in the environment and their memory.

Solution

As per NCERT, growth, reproduction and metabolism are not defining (exclusive) properties of living organisms:

⇒ isolated metabolic reactions can be carried out in vitro (in a test tube) – these are not living;

⇒ non-living objects (mountains, sand mounds) also grow by accumulation of material on the surface.

∵ Only living organisms can sense their surroundings and respond to environmental stimuli (consciousness), and human beings also have memory and self-consciousness,

∴ perception of events in the environment and their memory is an exclusive characteristic of living things.

Answer: (3)

AIPMT 2011 (Mains)

Keep practising — The Living World

2

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

  1. Tiger – tigris, species
  2. Cuttlefish – Mollusca, class
  3. Humans – Primata, family
  4. Housefly – Musca, order
AIPMT 2011 (Prelims)
3

ICBN stands for

  1. International Code of Botanical Nomenclature
  2. International Congress of Biological Names
  3. Indian Code of Botanical Nomenclature
  4. Indian Congress of Biological Names
AIPMT 2007
4

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

  1. interaction with the environment and progressive evolution
  2. reproduction
  3. growth and movement
  4. responsiveness to touch
AIPMT 2007
5

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

  1. have more than 90 percent similar genes
  2. look similar and possess identical secondary metabolites
  3. have same number of chromosomes
  4. can reproduce freely with each other and form seeds
AIPMT 2007
6

Biological organization starts with:

  1. Cellular level
  2. Atomic level
  3. Organismic level
  4. Submicroscopic molecular level
AIPMT 2007
7

Species are considered as

  1. real basic units of classification
  2. the lowest units of classification
  3. artificial concept of human mind which cannot be defined in absolute terms
  4. real units of classification devised by taxonomists.
AIPMT 2003
8

Biosystematics aims at

  1. the classification of organisms based on broad morphological characters
  2. delimiting various taxa of organisms and establishing their relationships
  3. the classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies
  4. identification and arrangement of organisms on the basis of their cytological characteristics.
AIPMT 2003
9

Nicotiana sylvestris flowers only during long days and N. tabacum flowers only during short days. If raised in the laboratory under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offspring. What is the best reason for considering N. sylvestris and N. tabacum to be separate species?

  1. They cannot interbreed in nature
  2. They are reproductively distinct
  3. They are physiologically distinct
  4. They are morphologically distinct
AIPMT 2003
10

What is true for individuals of same species ?

  1. Live in same habitat
  2. Live in different habitat
  3. Interbreeding
  4. Live in same niche
AIPMT 2002
11

Which of the following is less general in characters as compared to genus?

  1. Species
  2. Division
  3. Class
  4. Family
AIPMT 2001

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All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)