Consider the following statements regarding Toby Kiers and the 2026 Tyler Prize for Environmental Achievement: 1. Toby Kiers is an American evolutionary biologist. 2. Her research focuses on mycorrhizal fungal networks. 3. These networks exchange nutrients such as phosphorus and nitrogen with plant roots. 4. According to the source, these networks draw down approximately 13 billion tons of carbon annually. 5. Her landmark 2011 study described fungi as behaving like 'shrewd traders' in a biological marketplace. Which of the statements given above are correct?

Correct Answerसही उत्तर

D. 1, 2, 3, 4 and 5D. 1, 2, 3, 4 और 5

Explanationव्याख्या

All five statements are correct according to the source.
Toby Kiers is identified as an American evolutionary biologist who received the 2026 Tyler Prize for Environmental Achievement.
The award is frequently referred to as the 'Nobel Prize for the Environment'.
Kiers was recognised for research into mycorrhizal networks, vast underground fungal webs that interact with plant roots.
The source states that these networks exchange nutrients such as phosphorus and nitrogen with plant roots.
Their importance extends beyond nutrient exchange because the material describes them as critical climate regulators.
According to the source, these networks draw down approximately 13 billion tons of carbon each year, which it characterises as roughly one-third of global fossil-fuel emissions.
Another important element of Kiers' work is the biological marketplace concept.
In a landmark study published in 2011, she demonstrated that fungi behave like 'shrewd traders'.
According to the source's explanation, fungi move resources from areas of abundance toward areas of scarcity in order to maximise the carbon they receive from plants in return.
This creates an exam-relevant link between ecology, resource exchange and environmental regulation.
Students should memorise the complete sequence: Toby Kiers → evolutionary biologist → Tyler Prize 2026 → mycorrhizal networks → underground fungal webs → phosphorus and nitrogen → plant roots → carbon regulation → 13 billion tons annually → 2011 biological marketplace study.
A question might alter the nutrients from phosphorus and nitrogen to some unrelated pair, change the carbon figure or move the study to a different year.
According to the source, 2011 and approximately 13 billion tons are the relevant figures.
Statement 1 correctly identifies Kiers; statements 2 and 3 describe her research; statement 4 reproduces the carbon figure; and statement 5 correctly reflects the 2011 study.
Therefore all five statements are correct and option D is the answer.

सभी पाँच statements source के अनुसार सही हैं। Toby Kiers को American evolutionary biologist के रूप में identify किया गया है और उन्हें 2026 Tyler Prize for Environmental Achievement मिला। Award को frequently 'Nobel Prize for the Environment' कहा जाता है। Kiers को mycorrhizal networks पर research के लिए recognise किया गया। ये vast underground fungal webs होते हैं जो plant roots के साथ interact करते हैं। Source के अनुसार ये networks phosphorus और nitrogen जैसे nutrients plant roots के साथ exchange करते हैं। इनकी importance केवल nutrient exchange तक limited नहीं है। Material इन्हें critical climate regulators भी बताता है। Source के अनुसार ये networks annually approximately 13 billion tons carbon draw down करते हैं, जिसे roughly global fossil-fuel emissions का one-third बताया गया है। Kiers के research का दूसरा important concept 'biological marketplace' है। Landmark 2011 study में उन्होंने demonstrate किया कि fungi 'shrewd traders' की तरह behave करते हैं। Source के explanation के अनुसार fungi resources को abundance वाले areas से scarcity वाले areas में move करते हैं ताकि plants से return में प्राप्त carbon maximise किया जा सके। Revision chain: Toby Kiers → evolutionary biologist → Tyler Prize 2026 → mycorrhizal networks → underground fungal webs → phosphorus + nitrogen → plant roots → carbon regulation → approx. 13 billion tons annually → biological marketplace → 2011 study। Exam में nutrients, carbon figure या study year बदलकर statement गलत बनाया जा सकता है। Source के अनुसार relevant year 2011 और carbon figure approximately 13 billion tons है। इसलिए statements 1 से 5 सभी correct हैं और option D सही answer है।

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