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۔
اسپیروجیرا _____ رکھنے میں ماس-پروٹونیما سے مختلف ہے؟
- Pyrenoids
- Discoloid chloroplasts
- Rhizoidal branches
- None of these
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Explanation
Spirogyra has pyrenoids, which are structures in its chloroplasts that store starch and aid in photosynthesis.Moss protonema lacks pyrenoids; instead, it has a filamentous structure that helps in the early growth stage of moss.
کیلے کا پلانٹ ______ سے تیار ہوتا ہے؟
- Sucker
- Bud
- Seed
- None of these
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Explanation
Banana plants propagate through suckers.They are shoots growing from the underground rhizome.They do not produce viable seeds, as commercial banana varieties are mostly sterile.
اینٹومو فیلس پھول ______ ہیں؟
- Large colored and scented flower
- Very large in size
- Colorless flower
- None of these
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Explanation
Entomophilous flowers are pollinated by insects and attract them using bright colors and strong fragrances.Examples include sunflower, rose, and jasmine, which rely on insects like bees and butterflies for pollination.
- Well developed roots
- Well developed stomata
- Well developed aerenchyma
- None of these
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Explanation
Aerenchyma is a specialized tissue in aquatic plants that contains large air spaces to help in buoyancy and gas exchange.It is commonly found in plants like water hyacinth and lotus to facilitate survival in aquatic environments.
کون سا فلوروسینس کمپوزیٹی سے تعلق رکھتا ہے؟
- Capitulum
- Spadix
- Umbel
- None of these
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Explanation
Capitulum is the characteristic inflorescence of the family Compositae (Asteraceae), seen in sunflowers and daisies.It consists of a dense cluster of small florets arranged on a common receptacle.
پیاز کا پتی لیس تنے جس کو پھول برداشت کرنے کے لئے تیار کیا جاتا ہے اسے ______ کہا جاتا ہے؟
- Peduncle
- Scape
- Rachis
- None of these
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Explanation
Scape is a leafless flower-bearing stem that arises from the ground in plants like onions and lilies.It helps elevate the flower above the leaves for better pollination.
بغیر کسی بے ہودہ انڈے سے برانن کی تشکیل ______ کہلاتی ہے؟
- Amphimixis
- Parthenogenesis
- Parthenocarpy
- None of these
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Explanation
Parthenogenesis is the development of an embryo from an unfertilized egg.It commonly seen in some plants, insects, and reptiles.Parthenocarpy refers to the formation of fruit without fertilization, resulting in seedless fruits.
مندرجہ ذیل میں سے کون چھال پیدا نہیں کرتا ہے؟
- Prunus
- Guava
- Date palm
- None of these
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Explanation
Date palm (Phoenix dactylifera) does not produce true bark because it is a monocot and lacks secondary growth.Prunus, Guava, and Solanum are dicots that develop bark through secondary growth.
مندرجہ ذیل میں سے کون سا کیڑے دار پلانٹ ہے؟
- Ranunculus
- Hydrilla
- Drosera
- None of these
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Explanation
Drosera (Sundew) is an insectivorous plant that traps insects using its sticky glandular hairs.Hydrilla and Ranunculus are aquatic plants but not insectivorous.
مندرجہ ذیل میں سے کون کوٹیلڈنز کی بنیاد پر درجہ بندی کیا گیا ہے؟
- Bryophytes
- Angiosperm
- Gymnosperms
- None of these
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Explanation
Angiosperms are classified into monocots (one cotyledon) and dicots (two cotyledons) based on the number of seed leaves.Gymnosperms have naked seeds but are not classified by cotyledons like angiosperms.
