PPSC AGRICULTURE OFFICER PAST PAPER 16-02-2020
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
پودوں کے ظاہری خواص کی بنیاد پر فصلوں کا انتخاب کس طریقے سے کیا جاتا ہے؟
- Mass selection
- Pure line selection
- Hybridization
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- In plant breeding, selecting plants based on visible traits (phenotype) helps improve crop quality.
- Mass selection is the method where plants are chosen only on observable characteristics like height, yield, or disease resistance.
- This technique is simple, fast, and widely used in self-pollinated crops.
Last verified on 01-02-2026
کون سا فصل خود بخود پولینیشن کرنے والی ہے؟
- Maize
- Rice
- Wheat
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Crops can be self-pollinated (pollen fertilizes the same flower) or cross-pollinated (pollen comes from another plant).
- Wheat is a classic example of a self-pollinated crop.
- Self-pollination ensures genetic stability and uniformity in crop varieties.
Last verified on 01-02-2026
وہ پودے جن کے تنے اور پتے بہت زیادہ پانی رکھتے ہیں، انہیں کیا کہتے ہیں؟
- Succulent
- Xerophytes
- Hydrophytes
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Some plants store large amounts of water in their stems and leaves to survive in dry or arid conditions.
- These plants are called succulents.
- They have thick, fleshy tissues that retain water for long periods.
- Common examples include cactus, aloe vera, and agave.
Last verified on 01-02-2026
ہمیشہ سبز رہنے والے پودوں کی قِطعیات کب لگائی جاتی ہیں؟
- Spring
- Rainy season
- Autumn
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Evergreen cuttings are propagated from plants that retain leaves year-round.
- These cuttings root best when planted in autumn, as moderate temperatures and soil moisture favor growth.
- Proper planting time ensures higher survival and faster establishment.
Last verified on 01-02-2026
آم کے پھولوں کی جھاڑی (پینکل) کا آغاز کب ہوتا ہے؟
- Jan–Feb
- March–April
- May–June
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Panicle initiation is the stage when mango flower clusters start developing.
- In mango trees, this process usually begins in January–February in tropical regions.
- Timing may vary slightly depending on variety and climate.
Last verified on 01-02-2026
پودے کے کسی بھی آخری حصے کو ہٹانے کو کیا کہتے ہیں؟
- Heading back
- Pruning
- Training
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Plants can be shaped and managed by removing certain parts to improve growth and productivity.
- Heading back is the removal of any terminal part of a shoot or branch.
- It stimulates lateral growth, strengthens branches, and controls plant shape.
Last verified on 01-02-2026
کسی پودے کی کلیوں (گلاب یا پھول) اور کچھ آخری پتیوں کو کاٹنے کو کیا کہتے ہیں؟
- Pruning
- Topping
- Pinching
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Certain horticultural practices improve plant growth, shape, and fruiting.
- Topping is the removal of the inflorescence (flower cluster) along with some terminal leaves.
- It helps in controlling plant height, promoting lateral growth, and improving yield.
Last verified on 01-02-2026
وہ جاندار جو اپنی خوراک مردہ اور بوسیدہ نامیاتی مادوں سے حاصل کرتے ہیں؟
- Saprotrophs
- Parasites
- Predators
- Producers
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Some organisms feed on dead and decaying organic matter instead of living organisms.
- These organisms are called saprotrophs.
- They play an important role in decomposition and nutrient recycling in ecosystems.
- Examples include fungi, bacteria, and some protists.
Last verified on 01-02-2026
غیر حیاتیاتی عوامل کی وجہ سے پیدا ہونے والی بیماریاں کیا کہلاتی ہیں؟
- Infectious
- Parasitic
- Non-infectious
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Plant diseases can be caused by biotic (living) or abiotic (non-living) factors.
- Diseases caused by abiotic factors like drought, temperature extremes, nutrient deficiency, or chemical pollutants are non-infectious.
- Examples of abiotic diseases: chlorosis, scorching, nutrient deficiencies.
Last verified on 01-02-2026
کسی بیرونی محرک کی وجہ سے تنے کی غیر معمولی نشوونما کو کیا کہتے ہیں؟
- Nodulation
- Gall formation
- Tuberization
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Plants sometimes show abnormal growth due to external stimuli like insects, bacteria, or mechanical injury.
- This abnormal proliferation of stem tissue is called gall formation.
- Galls can occur on leaves, stems, or roots depending on the stimulus.
Last verified on 01-02-2026
