Class 12 Biology — Ecosystem Important Questions with Answers (Long answers)
Class 12 Biology board is reproduction, Mendel-to-DNA, evolution, human health, microbes, two biotechnology chapters, and ecology (organisms, ecosystem, biodiversity). This hub writes 150+ diagram-friendly items on the rationalized list. “Molecular basis of inheritance class 12” and “biotechnology principles MCQ” open hidden-answer practice. Twenty questions a screen; no date rumours.
Productivity, decomposition, food chain, ecological pyramids, and nutrient cycles (carbon, phosphorus) as kept. A 10% law is energy, not number always. GPP versus NPP is a definition pair. Write the cycle the question named. You are on Ecosystem (Long answers), page 1 of 1 — 1 questions in this filter. Long answers model a five-mark write-up: definition, reason, one diagram or equation idea, and a closing line. Do not copy the whole block in the exam; steal the order. This view is for the night before a unit test. Phone layout: chapter chips scroll sideways, answers stay inside a tap, and the next page is a numbered link so Google and students both get a short URL. Updated for 2026 classroom practice on the rationalized NCERT.
Class 12 Biology — Ecosystem पर एक unit-test उत्तर लिखें (परिचय, 4 बिंदु, निष्कर्ष)।
View the correct answer
Productivity, decomposition, food chain, ecological pyramids, and nutrient cycles (carbon, phosphorus) as kept. A 10% law is energy, not number always. GPP versus NPP is a definition pair. Write the cycle the question named.
चार बिंदु: (1) NCERT परिभाषा/सूत्र/घटना। (2) एक उदाहरण या आरेख-विचार। (3) एक तुलना या कारण। (4) एक साधारण संख्यात्मक या उद्धरण यदि पाठ माँगता है।
निष्कर्ष: उत्तर अध्याय-सत्य रखें — बोर्ड की डेटशीट यहाँ नहीं गढ़ी गई।
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Class 12 Biology में कितने प्रश्न हैं? 156 महत्वपूर्ण प्रश्न: 87 MCQ, 43 लघु, 26 दीर्घ। NCERT जीव विज्ञान के rationalized अध्याय।
उत्तर कहाँ हैं? हर प्रश्न के नीचे View the correct answer दबाएँ। पहले स्वयं लिखें, फिर मिलाएँ। MCQ में सही विकल्प और एक पंक्ति की व्याख्या है।
पेज क्यों बँटे हैं? एक स्क्रीन पर 20 प्रश्न। बाकी Page 2, 3 पर — फोन पर स्क्रॉल छोटा रहता है। यह पेज 1/1 है।
Ecosystem क्यों महत्वपूर्ण है? Productivity, decomposition, food chain, ecological pyramids, and nutrient cycles (carbon, phosphorus) as kept. A 10% law is energy, not number always. GPP versus NPP is a definition pair. Write the cycle the question na…
