The Living World
Punjab Board · Class 11 · Biology
Flashcards for The Living World — Punjab Board Class 11 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.
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Explore the full setWhat is biodiversity and what does the known range of biodiversity on Earth represent?
Answer
Biodiversity refers to the number and types of organisms present on Earth. The number of species that are known and described ranges between 1.7 to 1.8 million. This represents all the different kinds…
Why is standardized naming of organisms necessary? What problem does it solve?
Answer
Standardized naming is necessary because organisms are known by different local names in different regions and countries. For example, the same plant might be called 'Aloo' in Hindi, 'Batata' in Marat…
What are the two main processes that come before classification in the study of organisms?
Answer
The two main processes are: (1) Identification - recognizing and determining what organism you are looking at by carefully observing its characteristics and comparing them with known descriptions. (2)…
Define binomial nomenclature and explain why it is called 'binomial'.
Answer
Binomial nomenclature is a system of naming organisms using two Latin words - the generic name (genus) and the specific epithet (species). It is called 'binomial' because 'bi' means two and 'nomial' r…
State the four universal rules for writing biological names in binomial nomenclature.
Answer
The four universal rules are: (1) Biological names are written in Latin and italicized, regardless of their origin. They are Latinized to maintain consistency. (2) The first word represents the genus …
What is the difference between 'identification' and 'classification' of organisms?
Answer
Identification is the process of recognizing and determining what an organism is - answering the question 'What organism is this?' It involves observing characteristics and comparing them with known d…
What are taxa? Give examples showing that taxa can represent different levels of organization.
Answer
Taxa (singular: taxon) are the convenient categories or groups into which organisms are classified based on shared characteristics. The scientific term for these categories at different levels is taxa…
How does the early classification system based on 'uses' of organisms differ from modern taxonomy?
Answer
Early classification systems grouped organisms based on their utility to humans - whether they provided food, clothing, shelter, or other practical benefits. This was human-centered and purely utilita…
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