CBSE Class 11 Biology HOTs The Living World

Ques. Which one of the following aspects is an exclusive characteristic of living things?
(a) Isolated metabolic reactions occur in vitro
(b) Increase in mass from inside only
(c) Perception of events happening in the environment and their memory.
(d) Increase in mass by accumulation of material both on surface as well as internally.

Answer: C

Ques. The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for
(a) interaction with the environment and progressive evolution
(b) reproduction
(c) growth and movement
(d) responsiveness to touch. 

Answer: D

Ques. Biological organisation starts with
(a) cellular level
(b) organismic level
(c) atomic level
(d) submicroscopic molecular level. 

Answer: D

Ques. Select the correctly written scientific name of Mango which was first described by Carolus Linnaeus.
(a) Mangifera Indica
(b) Mangifera indica Car. Linn.
(c) Mangifera indica Linn.
(d) Mangifera indica 

Answer: C

Ques. Which of the following is against the rules of ICBN?
(a) Hand written scientific names should be underlined.
(b) Every species should have a generic name and a specific epithet.
(c) Scientific names are in Latin and should be italicized.
(d) Generic and specific names should be written starting with small letters.

Answer: D

Ques. Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?
(a) The names are written in Latin and are italicised.
(b) When written by hand the names are to be underlined.
(c) Biological names can be written in any language.
(d) The first word in a biological name represents the genus name and the second is a specific epithet.

Answer: C

Ques. ICBN stands for
(a) International Code of Botanical Nomenclature
(b) International Congress of Biological Names
(c) Indian Code of Botanical Nomenclature
(d) Indian Congress of Biological Names.

Answer: A

Ques. Biosystematics aims at
(a) the classification of organisms based on broad morphological characters
(b) delimiting various taxa of organisms and establishing their relationships
(c) the classification of organisms based on their evolutionary history and establishing their phylogeny on the totality of various parameters from all fields of studies
(d) identification and arrangement of organisms on the basis of their cytological characteristics.

Answer: C

Ques. The book ‘Genera Plantarum’ was written by
(a) Engler and Prantl
(b) Bentham and Hooker
(c) Bessey
(d) Hutchinson.

Answer: B

Ques. Linnaeus is credited with
(a) binomial nomenclature
(b) theory of biogenesis
(c) discovery of microscope
(d) discovery of blood circulation. 

Answer: A

Ques. Linnaeus evolved a system of nomenclature called
(a) mononomial     
(b) vernacular
(c) binomial           
(d) polynomial.

Answer: C

Ques. The term “New Systematics” was introduced by
(a) Bentham and Hooker
(b) Linnaeus
(c) Julian Huxley
(d) A.P. de Candolle. 

Answer: C

Ques. Match column I with column II for housefly classification and select the correct option using the codes given below.
Column I         Column II
A. Family        (i) Diptera
B. Order         (ii) Arthropoda
C. Class         (iii) Muscidae
D. Phylum      (iv) Insecta
(a) A-(iii), B-(i), C-(iv), D-(ii)
(b) A-(iii), B-(ii), C-(iv), D-(i)
(c) A-(iv), B-(iii), C-(ii), D-(i)
(d) A-(iv), B-(ii), C-(i), D-(iii) 

Answer: A

Ques. The common characteristics between tomato and potato will be maximum at the level of their
(a) family         
(b) order
(c) division       
(d) genus.

Answer: A

Ques. Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature and correctly described?
(a) Musca domestica - the common house lizard, a reptile
(b) Plasmodium falciparum - a protozoan pathogen causing the most serious type of malaria.
(c) Felis tigris - the Indian tiger, well protected in Gir forests.
(d) E.coli - full name Entamoeba coli, a commonly occurring bacterium in human intestine.

Answer: B

Question.Give an example of genus with a single species .

Answer : Genus- Homo

Question.Classify whole moong dal and broken moong dal into living nonliving in terms of growth and respiration? 

Answer . Whole moong dal is living because it has seed in dormant stage.On getting conditions for germination ,it germinates and develops into plant. It also respires .Broken moong dal is non living because internal growth is absent in it.Respiration is also absent.

Question.Latin names of plants and animals are difficult to pronounce and remember.Why do we then use them?

Answer : Plants and animals are named differently in different parts of the world.In order to avoid confusion it is universally accepted to name plants and animals in latin.