NEET UG Plant Physiology: Plant Growth and Development – Chapter Test
NEET UG Plant Physiology: Plant Growth and Development – Chapter Test is an online chapter test in the NEET UG pattern, covering Plant Physiology. Attempt it on SeatBeat with a timer like the real exam, then see a detailed solution for every question and your score and weak-topic analysis.
Topics in this test
| Topic | Questions |
|---|---|
| Plant Physiology | 20 |
Difficulty: 9 medium · 11 hard
Plant Growth and Development MCQ questions with answers
The first 3 of 20 questions. Unlock the series for the rest, each with a solution.
Q1. Which one of the following sets consists of biennial plants in which flowering is promoted by vernalisation (exposure to low temperature)?
निम्नलिखित में से कौन-सा समूह ऐसे द्विवर्षी पौधों का है जिनमें पुष्पन वसंतीकरण (निम्न तापमान के संपर्क) द्वारा प्रोत्साहित होता है?
- A. Sugar beet, cabbage, carrot / चुकंदर, पत्तागोभी, गाजर
- B. Soybean, cotton, sunflower / सोयाबीन, कपास, सूरजमुखी
- C. Tomato, cucumber, chilli / टमाटर, खीरा, मिर्च
- D. Rice, maize, sorghum / धान, मक्का, ज्वार
Solution
Sugar beet, cabbage and carrot are classic biennials whose flowering is promoted by a cold treatment (vernalisation); the other groups are not vernalisation-requiring biennials of this kind.
चुकंदर, पत्तागोभी और गाजर क्लासिक द्विवर्षी पौधे हैं जिनका पुष्पन शीत उपचार (वसंतीकरण) द्वारा प्रोत्साहित होता है; अन्य समूह इस प्रकार के वसंतीकरण-आवश्यक द्विवर्षी नहीं हैं।
Q2. The historic observations that the coleoptile tip perceives unilateral light while bending occurs lower down, described in "The Power of Movement in Plants" (1880), were carried out by Charles Darwin and Francis Darwin using the coleoptiles of which plant?
"द पावर ऑफ़ मूवमेंट इन प्लांट्स" (1880) में वर्णित ये ऐतिहासिक प्रेक्षण कि कोलियोप्टाइल का शीर्ष एकपक्षीय प्रकाश का बोध करता है जबकि झुकाव नीचे की ओर होता है, चार्ल्स डार्विन और फ्रांसिस डार्विन द्वारा किस पौधे के कोलियोप्टाइल का उपयोग करके किए गए थे?
- A. Zea mays (maize) / Zea mays (मक्का)
- B. Phalaris canariensis (canary grass) / Phalaris canariensis (कैनरी घास)
- C. Hordeum vulgare (barley) / Hordeum vulgare (जौ)
- D. Avena sativa (oat) / Avena sativa (जई)
Solution
The Darwins worked with coleoptiles of canary grass, Phalaris canariensis, showing the tip is the light-perceiving region. The other grasses were used in later experiments but not in this classic study.
डार्विन बंधुओं ने कैनरी घास, Phalaris canariensis के कोलियोप्टाइल पर कार्य किया, यह दर्शाते हुए कि शीर्ष ही प्रकाश का बोध करने वाला क्षेत्र है। अन्य घासों का उपयोग बाद के प्रयोगों में किया गया, किंतु इस क्लासिक अध्ययन में नहीं।
Q3. Which one of the following is NOT an effect of ethylene?
निम्नलिखित में से कौन-सा एथिलीन का प्रभाव नहीं है?
- A. Promotion of fruit ripening / फल पकने का संवर्धन
- B. Closure of stomata under water stress / जल प्रतिबल की स्थिति में रंध्रों का बंद होना
- C. Senescence and abscission of leaves and flowers / पत्तियों और पुष्पों का जीर्णन और विलगन
- D. Breaking of seed and bud dormancy / बीज और कलिका प्रसुप्ति का टूटना
Solution
Fruit ripening, senescence/abscission of leaves and flowers, and breaking of seed and bud dormancy are ethylene effects; stomatal closure under water stress is brought about by abscisic acid, not ethylene.
फल पकना, पत्तियों और पुष्पों का जीर्णन/विलगन, तथा बीज और कलिका प्रसुप्ति का टूटना एथिलीन के प्रभाव हैं; जल प्रतिबल की स्थिति में रंध्रों का बंद होना एब्सिसिक अम्ल द्वारा होता है, एथिलीन द्वारा नहीं।
Frequently asked questions
How many questions are in the NEET UG Plant Physiology: Plant Growth and Development – Chapter Test?
20 questions for 20 marks, to be answered in 20 minutes.
Is there negative marking in the NEET UG Plant Physiology: Plant Growth and Development – Chapter Test?
Yes — 0.25 marks are deducted for each wrong answer, as in the real exam pattern.
Which topics does the NEET UG Plant Physiology: Plant Growth and Development – Chapter Test cover?
Plant Physiology (20 questions).
Is the NEET UG Plant Physiology: Plant Growth and Development – Chapter Test free?
It is part of the NEET UG 2027 Mock Test Series (134 tests, ₹299). You can first try Biology in Human Welfare – Topic Test for free.
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