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Organisms and Populations

CBSE · Class 12 · Biology

Flashcards for Organisms and Populations — CBSE Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.

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An illustration showcasing various examples of mutualistic relationships, such as lichens, mycorrhizae, fig and fig wasp, and sea anemone and clownfish.
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100 Flashcards
Card 1Introduction to ecology

What is ecology concerned with at the broadest level?

Answer

Ecology studies the relationships of living organisms with the abiotic environment and with other species. It is concerned with four levels of biological organisation: organisms, populations, communit

Card 2पारिस्थितिकी का परिचय

पारिस्थितिकी सबसे व्यापक स्तर पर किससे संबंधित है?

Answer

पारिस्थितिकी (Ecology) में जीवों के अजैविक पर्यावरण तथा अन्य जीव-जंतुओं के साथ सम्बन्धों का अध्ययन किया जाता है। यह जैविक संगठन के चार स्तरों से सम्बन्धित है: जीव, आबादी, समुदाय और जीवमण्डल।

Card 3Biological questions

What is the difference between a 'how-type' question and a 'why-type' question in biology?

Answer

A how-type question asks about the mechanism of a process, while a why-type question asks about its significance. For example, how a bird sings is about the voice box mechanism, while why it sings rel

Card 4जैविक प्रश्न

जीवविज्ञान में 'कैसे प्रकार' वाले प्रश्न और 'क्यों प्रकार' वाले प्रश्न में क्या अंतर है?

Answer

कैसे प्रकार का प्रश्न किसी प्रक्रिया के तंत्र के बारे में पूछता है, जबकि क्यों प्रकार का प्रश्न उसके महत्व के बारे में पूछता है। उदाहरण के लिए, एक पक्षी कैसे गाता है, यह स्वरयंत्र तंत्र के बारे में है

Card 5Population basics

What is a population in ecology?

Answer

A population is a group of individuals of the same species living in a defined geographical area, sharing or competing for similar resources, and potentially interbreeding. Even a group formed by asex

Card 6जनसंख्या की बुनियादी बातें

पारिस्थितिकी में जनसंख्या क्या है?

Answer

जनसंख्या (population) एक ही जाति के व्यक्तियों का एक समूह होता है जो एक निश्चित भौगोलिक क्षेत्र में एक साथ रहते हैं, समान संसाधनों को साझा करते हैं या उनके लिए प्रतिस्पर्धा करते हैं और संभवतः आपस में

Card 7Population ecology

Why is population ecology important?

Answer

Population ecology is important because it links ecology to population genetics and evolution. Natural selection operates at the population level, not at the level of a single individual.

Card 8जनसंख्या पारिस्थितिकी

जनसंख्या पारिस्थितिकी क्यों महत्वपूर्ण है?

Answer

जनसंख्या जीवविज्ञान महत्वपूर्ण है क्योंकि यह जीवविज्ञान को जनसंख्या आनुवंशिकी और विकास से जोड़ता है। प्राकृतिक चयन जनसंख्या स्तर पर संचालित होता है, न कि किसी एक व्यक्ति के स्तर पर।

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Frequently Asked Questions

What are the important topics in Organisms and Populations for CBSE Class 12 Biology?
Organisms and Populations covers several key topics that are frequently asked in CBSE Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Organisms and Populations — CBSE Class 12 Biology?
Understand the core concepts first, then work through the 50 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Organisms and Populations?
There are 100 flashcards for Organisms and Populations covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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