SPSC LECTURER BOTANY PAST PAPERS 2000 TO TILL DATE
Lecturer Botany Past Papers Click here
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
سن 1967 میں "بلیک ہول" کی اصطلاح کس نے تیار کی؟
- John Archibald Wheeler
- Stephen Hawking
- Albert Einstein
- None of these
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Explanation
John Archibald Wheeler, an American physicist, popularized the term "Black Hole" in 1967.It describes a region of space where gravity is so strong that nothing, not even light, can escape.
- Out
- Away
- Off
- None of these
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Explanation
"Walked out" means leaving a place, especially in disappointment or protest.In this context, "walked out before it ended" correctly conveys leaving the movie early due to boredom.
لیموں کے جڑ نوڈولس میں ، لیگیموگلوبن اہم ہے کیونکہ یہ ____؟
- Acts as an oxygen scavenger
- Transports oxygen to the root nodule
- Acts as a catalyst in transamination
- None of these
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Explanation
Leg-haemoglobin binds to oxygen, preventing it from inhibiting nitrogenase, the enzyme responsible for nitrogen fixation.This helps maintain the low oxygen conditions required for nitrogen-fixing bacteria to function efficiently.
پودوں میں تبدیلی کے لئے کون سا طریقہ عام طور پر استعمال نہیں ہوتا ہے؟
- Natural selection
- Agrobacterium mediated transformation
- Gene gun method
- None of these
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Explanation
Natural selection is an evolutionary process, not a method for introducing foreign genes into plants.Agrobacterium-mediated transformation and the gene gun method are commonly used techniques for plant transformation.
کلوننگ پودوں کے لئے استعمال ہونے والی تکنیک مندرجہ ذیل میں سے کون سا ہے؟
- Hybridization
- Tissue culture
- Electrophoresis
- None of these
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Explanation
Tissue culture is a cloning technique where plant cells or tissues grow in a nutrient medium under sterile conditions.It allows rapid multiplication of genetically identical plants.
مندرجہ ذیل میں سے کون سا جوڑا ہے ، صحیح طور پر مماثل نہیں ہے؟
- Abscisic add-Stomatal closure
- IAA-Cell wall elongation
- Gibberellic acid-Leaf fall
- None of these
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Explanation
Gibberellic acid promotes stem elongation, seed germination, and flowering rather than leaf fall.Leaf fall (abscission) is mainly regulated by abscisic acid (ABA) and ethylene.
پودوں کا استعمال سستے اوسموٹیکم کے طور پر کون سا مادہ ہے؟
- Ascorbic acid
- Minerals
- Proline
- None of these
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Explanation
Proline acts as a cheap osmoticum.It helping plants maintain water balance under drought, salinity, and other stress conditions.It stabilizes proteins, protects membranes, and scavenges reactive oxygen species (ROS).
- The marble was rolled by Robin in a small plastic pipe.
- The marble was rolled through a small plastic pipe by Robin.
- A small plastic pipe was rolled through a marble by Robin.
- None of these
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Explanation
The marble was rolled through a small plastic pipe by Robin.
- This is the correct passive voice of the given sentence while maintaining proper word order.
- The subject "Robin" becomes the agent, and "the marble" becomes the object in passive form.
فوٹووراسپیریشن یہ ہے جو سائیکل میں ہوتا ہے؟
- Glycolate
- Kerbs
- Pyruvate
- None of these
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Explanation
Photorespiration occurs in the Glycolate pathway (C₂ cycle), where glycolate is formed when RuBisCO fixes oxygen instead of carbon dioxide.This process takes place in the chloroplasts, peroxisomes, and mitochondria of plants.
- Musician
- Singer
- Composer
- None of these
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Explanation
A book is created by an author.Just as a symphony is created by a composer.The composer writes and arranges musical pieces, similar to how an author writes a book.
