FPSC LECTURER BOTANY PAST PAPER 10-08-2024
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
پلانٹ سیل نیوکلئس _____ کے ذریعہ دریافت کیا گیا تھا؟
Robert Hooke
Matthias Schleiden
Robert Brown
Theodor Schwann
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Explanation
Robert Brown discovered the nucleus in plant cells.
It was first described by Franz Bauer in 1804 and in more detail in 1831 by Scottish botanist Robert Brown.
Mangroves
Desert plants
Conifers
Cacti
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Explanation
Pneumatophores are specialized aerial roots foun d in mangrove species.
In some species, these roots are pencil-sized and peg whereas in some other species , they look like a knee.
These roots have numerous pores through which oxygen enters the underground tissues
Umbel
Spike
Raceme
Panicle
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Explanation
Inflorescence: raceme-like. Flower: calyx 2--3 mm; corolla 10 mm wide,
white, lobes deep; anthers 1.4--2.2 mm; style 3--5 mm. Fruit: 6--8 mm, black. Seed: 1.5--2.5 mm.
Adventitious roots
Nodes with buds
Stomata
Lenticels
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Explanation
The "eyes" on potato tubers are nodes where buds can develop into new shoots.
Rosaceae
Liliaceae
Solanaceae
Asteraceae
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Explanation
Plants in the Solanaceae family have an obligately superior ovary.
In the Solanaceae family, the ovary is oblique in position due to the tilting of posterior carpels to the right and anterior carpels to the left at an angle of 45 degrees.
The ovary is superior, bilocula r with many ovules on swollen axile placentation.
Drupe
Capsule
Berry
Achene
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Explanation
The Solanaceae family ( e.g., tomatoes, peppers ) typically produces berries.
Sieve tubes
Companion cells
Phloem parenchyma
Phloem fibers
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Explanation
Sieve tubes and companion cells are absent in the phloem of pteridophytes.
Angiosperms
Gymnosperms
Pteridophytes
Bryophytes
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Explanation
Pteridophytes are the first terrestrial plants to possess vascular tissue.
A pteridophyte is a vascular plant (with xylem and phloem) that reproduces by means of spores.
Because pteridophytes produce neithe r flowers nor seeds,
They are sometimes referred to as "cryptogams", meaning that their means of reproduction is hidden.
pH meter
Moisture meter
Conductivity meter
Thermometer
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Explanation
Soil salinity is measured using a conductivity meter , which assesses the electrical conductivity of the soil.
Integument
Endocarp
Exocarp
Pericarp
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Explanation
In gymnosperms, the ovule is covered by an integument, which is a protective layer.