What is true about assertion a and reason r?
Assertion a. The 'biological species' concept helps us to ask how species are formed.
Reason r. The concept of biological species focusses our attention on the question of how reproductive isolation comes about

Assertion: Biological concept of species is based on reproductive isolation. Reason: Biological concept of species is universal.

Assertion: Biological concept of species is based on reproductive isolation. Reason: Biological concept of species is universal.

Assertion: The biological concept of species is based on reproductive isolation. Reason: Tigon is the interspecific sterile hybrid produced in captive condition

Assertion: The biological concept of species is based on reproductive isolation. Reason: Tigon is the interspecific sterile hybrid produced in captive condition

ASSERTION TYPE QUESTIONS : These questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is correct explanation of Assertion B. If both Assertion and Reason are true but Reasou is not correct explanation of Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion : Cross pollination in true genetic sense within species is called xenogamy.Reason: When there is cross pollination, resultant hybrid is a combination of characters of two plants.

These questions consist of two statements each printed as Assertoin and Reason. While answering these questions, you are requied to choose any one of the following four responses. If both Assertion and Reason are true and Reason is correct explanation of Assertion If both Assertion and REason are true but Reason is not correct explanation of Assertion If Assertion is true but Reason is false If both Assertion and Reason are false Assertion: No two species within a given community can have exactly the same niche. Reason: The habitat of species together with the functions forms its niche.

These questions consist of two statements each, printed as Assertion and Reason. While answerng this questions are required to choose any one of the following four responses: If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Apis mellifera species of honey bees is commonly used for apiculture. Apis mellifera is very docle, high-yielding and less swarming.

Assertion (A): Speciation is the process of formation of a new species from a pre-existing one. Reason (R): Mutation plays a role in speciation

Assertion (A) : Self - sterility is observed in Nicotiana species. Reason (R) : Because the genes are located on chromosome.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: With few exception, tropics more species than temperature or polar areas. Reason: Species diversity decrease as we move away from the equator towards the poles.