SPSC BOTANY 25 YEARS PAST PAPERS
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
کسی کائی کی جڑ کی طرح اور پتی کی طرح ڈھانچے اور عروقی پودے کی جڑوں اور پتے _______ ہیں؟
- Vestigial structures
- Analogous structures
- Homologous structures
- None of these
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Explanation
Analogous structures perform similar functions but have different evolutionary origins.Mosses have root-like rhizoids and leaf-like structures that resemble vascular plant roots and leaves but differ in origin and structure.
مندرجہ ذیل میں سے کون سا دوہری حیاتیات ہے؟
- Algae
- Fungi
- Lichen
- None of these
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Explanation
Dual Organism – Lichen is a symbiotic association between a fungus and an alga (or cyanobacterium), functioning as a single organism.Mutualism – The fungus provides structure and absorbs nutrients.While the alga performs photosynthesis, producing food.
بیجوں کو ______ میں بہترین طور پر محفوظ کیا جاسکتا ہے؟
- Hot and dry conditions
- Cool and wet conditions
- Cool and dry conditions
- None of these
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Explanation
Low temperature slows down metabolic activities, preventing seed deterioration.Low moisture prevents fungal growth and enzymatic degradation, ensuring long-term viability.
کیسپیرین بینڈ کہاں پائے جاتے ہیں؟
- Phloem
- Epidermis
- Endodermis
- None of these
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Explanation
Casparian bands (Casparian strips) are waterproof cell wall structures found in the endodermis of roots.They regulate water and mineral uptake.It forcing substances to pass through the plasma membrane instead of moving freely between cells.
میں پروپ یا ستون کی جڑیں پائی جاتی ہیں؟ ______
- Almond
- Banyan
- Maize
- None of these
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Explanation
Prop roots are aerial roots that grow downward from the branches of Banyan trees to provide additional support.These roots help in mechanical support and nutrient absorption as the tree expands horizontally.
مییوسس کی اصطلاح ______ کے ذریعہ تیار کی گئی تھی؟
- Robert Brown
- Farmer
- Morgan
- None of these
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Explanation
The term meiosis was coined by J.B. Farmer and J.E.S. Moore in 1905.Meiosis is a type of cell division that reduces chromosome numbers by half.It producing gametes in animals and spores in plants.
ماحولیاتی عوامل کو ______ بھی کہا جاتا ہے؟
- Water factors
- Air factors
- Ecological factors
- None of these
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Explanation
Environmental factors, such as climate, soil, and living organisms, influence ecosystems and are termed ecological factors.These factors include abiotic (non-living) and biotic (living) components that affect the survival and growth of organisms.
ڈویژن میں فنگی اوومیکوٹا ______ کے نام سے جانا جاتا ہے؟
- Club fungi
- Egg fungi
- Sac fungi
- None of these
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Explanation
Oomycota are called egg fungi because they produce large, immobile eggs (oogonia) during reproduction.Unlike true fungi, they have cellulose in their cell walls instead of chitin.
ایک ایسا پودا جس میں سب ڈویژن سیلپسیڈا میں کوئی سچ نہیں ہے؟
- Sporophyte
- Gametes
- Leaves and roots
- None of these
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Explanation
Plants in Psilopsida (whisk ferns) lack true leaves and roots but have vascular tissue.They rely on rhizomes for water and nutrient absorption.
زیادہ تر جڑی بوٹیاں ______ میں پائی جاتی ہیں؟
- Liliaceae
- Brassicaceae
- Mimosaceae
- None of these
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Explanation
The Brassicaceae family, also known as the mustard family.It predominantly contains herbaceous plants.Examples include cabbage, mustard, and radish.
