Species

Q. Species are considered as

1. Real basic units of classification
2. 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

Q.

What happens when the members of the same genus but different species interbreed?

1. The offspring is very short-lived

2. The offspring cannot produce more animals of its own kind but can breed with others of the same genus

3. The offspring is infertile

4. The offspring lacks the characteristics of both the species

Q. First book in which binomial nomenclature of plants was used and that was written by Linnaeus is:

1. Systema Naturae
2. Species Plantarum
3. Origin of species
4. Genera Plantarum

Q. Which among the following is the category with least number of organisms?

1. Tribe
2. Order
3. Species
4. Class

Q. Study the four statements (A - D) given below and select the two correct ones out of them :
A. Definition of biological species was given by Ernst Mayr.
B. Photoperiod does not affect reproduction in plants.
C. Binomial nomenclature system was given by R. H. Whittaker.
D. In unicellular organisms, reproduction is synonymous with growth.

1. A and B
2. B and C
3. C and D
4. A and D

Q. A species is a group of organisms characterised by all of the following except

1. They do not normally interbreed with other species in nature
2. They can be distinguished from other species
3. They are incapable of breeding with other species
4. They remain relatively constant

Q. Species is

1. Populations of one type
2. Group of individuals occurring in the same geographical area
3. Populations of individuals with similar phenotypic traits
4. Populations of interbreeding individuals

Q.

Which of the following statement(s) is/are false, regarding human classification?

I. Humans are highly evolved but still grouped into a common group with other Primates.

II. "Homo sapiens" is Latin for "wise person”.

III. Homo sapiens sapiens is the scientific name of modern humans.

IV. Human classification is purely based on morphology.

1. IV

2. I

3. II only

4. II & III

Q.

What happens when the members of the same genus but different species interbreed?

1. The offspring is very short-lived

2. The offspring is infertile

3. The offspring cannot produce more animals of its own kind but can breed with others of the same genus

4. The offspring lacks the characteristics of both the species

Q. What is true for individuals of same species ?

1. Live in the same niche
2. Live in the same habitat
3. Interbreeding
4. Live in different habitat

Q. A physical barrier separates a single species, causing two separate populations to form. Over time these two populations adapt to their environments. Eventually, these two populations are no longer able to successfully reproduce with each other. Such species are called

1. peripatric species
2. parapatric species
3. sympatric species
4. allopatric species

Q.

Which of the following statement(s) is/are false, regarding human classification?

I. Humans are highly evolved but still grouped into a common group with other Primates.

II. "Homo sapiens" is Latin for "wise person”.

III. Homo sapiens sapiens is the scientific name of modern humans.

IV. Human classification is purely based on morphology.

1. I

2. II only

3. II & III

4. IV

Q. Which among the following scenarios is an example of development of allopatric species?

1. A river separates members of a squirrel population that used to occupy the same geographical area
2. Houseflies from a certain region migrate and interbreed with a different housefly population in a neighbouring area
3. A disease ravages a large fox population, killing all members that did not have a genetic resistance to the disease
4. Certain members of a human population have more offspring than others

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

1. Have more than $90\%$ similar genes
2. Look similar and possess identical secondary metabolites
3. Have the same number of chromosomes
4. Can reproduce freely with each other and form seeds

Q. Lion and tiger belong to the same _______ but different _______.

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

Q. The term "niche" of a species refers to

1. range of temperatures it can tolerate
2. resources it utilises
3. its functional role in the ecological system
4. all of the above

Q. Criterion for interbreeding is not applicable for all species because

1. many organisms reproduce sexually
2. many organisms reproduce asexually
3. many organisms are specific for certain habitat
4. many organisms are situated in a restricted environment

Q. is a group of closely related organisms, that can interbreed and produce fertile offsprings.

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

Q. Assertion [A]: Phylogeny is the developmental history of a species.
Reason [R]: Species is a basic unit of taxonomy.

1. Both assertion and reason are true and the reason is the correct explanation of assertion
2. Both assertion and reason are true but reason is not the correct explanation of assertion
3. Assertion is true but reason is false
4. Assertion is false and reason is true