LECTURER BOTANY PAST PAPERS AND SYLLABUS
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
سب سے بڑا انجیوسپرم پھول ______ ہے؟
- Rafflesia arnoldii
- Eucalyptus macrocarpa
- Sporophyta gigantea
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Rafflesia arnoldii produces the world's largest individual flower, reaching up to 3 feet in diameter.It is a parasitic plant found in Southeast Asia.This is known for its strong odor resembling rotting flesh.
میوٹیشن کا نظریہ کس نے دیا تھا؟
- Albert Einstein
- Hugo de Vries
- Flemming
- Haldane
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The Mutation theory was proposed by Hugo de Vries.
Hugo Marie de Vries was a botanist from the Netherlands.
مٹی کا کٹاؤ زیادہ ہوتا ہے جب ____؟
- No rains occur
- Rainfall is evenly distributed
- The rainfall is received in heavy downpours
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Heavy downpours cause rapid surface runoff, leading to greater soil erosion.Raindrop impact loosens soil particles, making them more susceptible to being washed away.
اونٹوں کے بارے میں مندرجہ ذیل تمام حقائق انہیں گرم صحراؤں میں طویل عرصے تک خشک سالی کے مطابق ڈھال دیتے ہیں، سوائے اس کے کہ؟
- Camels can drink as much as 1/3 of their body weight in ten minutes, which other mammals cannot
- The camel’s thick coat insulates its body against high temperatures thereby reducing water loss
- Camels can survive a loss of up to 40% of their body water, for most mammals this limit is 20 percent
- Camels do not sweat until the external temperature exceeds 41°C, which is much higher than for most mammals
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Camels can drink as much as 1/3 of their body weight in ten minutes, which other mammals cannot.
This statement is not directly related to drought adaptation, as rapid water intake does not help in conserving water.
گلیکولیسس کا مطلب ہے ______ کو تقسیم کرنا؟
- Sucrose
- Sugar
- Glucose
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Glycolysis is the breakdown of glucose (C₆H₁₂O₆) into pyruvate to release energy.It occurs in the cytoplasm of cells.It is the first step of cellular respiration.
- n produces nothing
- n produces 2n
- 2n produces 2n
- n produces n
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
In haploid organisms or gametes, "n" represents a single set of chromosomes that remains the same during mitotic division.A haploid cell (n) produces another haploid cell (n) through mitosis.
بیجوں کے عروقی پودوں میں _____ شامل ہیں؟
- Cycadophyta
- Lycophyta
- Anthophyta
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Lycophyta includes club mosses, which are seedless vascular plants.They reproduce via spores instead of seeds.
ایک کروموسوم صرف ایک طرف بازو والا یہ _____ ہے؟
- Acrocentric
- Telocentric
- Metacentric
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Telocentric chromosomes have their centromere at the very end, leaving only one arm.They are not present in humans but can be found in some species like mice.
نامیاتی معاملہ ______ میں مکمل طور پر غیر حاضر ہے؟
- Mold
- Cast
- Impression
- All of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Mold, Cast, and Impression fossils preserve the shape or structure of organisms but lack organic matter.They form when an organism's remains decay, leaving behind a cavity (mold) or are filled with minerals (cast).
کروموسوم ______ پر مییوسس سیل ڈویژن میں نصف تک کم ہوجاتے ہیں؟
- Anaphase I
- Telophase I
- Metaphase
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
During Anaphase I of meiosis, homologous chromosomes separate, reducing the chromosome number by half.This ensures that each gamete receives only one chromosome from each homologous pair.
