ZOOLOGY LECTURER PAST PAPER 09-08-2024 BY FPSC
FPSC Lecturer Zoology Past Paper Click here
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
Spermatocytes
Gametes
Somatic cells
Oocytes
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Explanation
Mitosis is a type of cell division that results in two daughter cells, each with the same number o f chromosomes as the parent cell, producing somatic cells (body cells).
It is responsible for:
growth repair a sexual reproduction in organisms.
بچھو اور مکڑیاں کس طبقے سے تعلق رکھتی ہیں؟
Insecta
Crustacea
Arachnida
Myriapoda
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Explanation
Scorpions and spiders both belong to the class Arachnida .
This class includes arachnids, which are characterized by having eight legs and lacking antennae.
Abstain
Avoid
Forgo
Exert
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Explanation
WIELD چلانا , بروئے کار لانا
Exert زور لگانا
Mutualism
Commensalism
Parasitism
Symbiosis
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Explanation
Parasitism is a type of relationship where one organism ( the parasite) lives on or inside another organism (the host)
And benefits at the expense of the host, who is harmed by the interaction.
50%
75%
90%
99.9%
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Explanation
It is estimated that about 99.9% of all species that have ever existed on Earth are now extinct.
This figure underscores the vast extent of extinction events throughout:
Earth's history reflects the dynamic often unstable nature of life on the planet.
The remaining 0.1% of species are the ones that are still extant today.
Convergent evolution
Parallel evolution
Adaptive radiation
Co-evolution
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Explanation
Adaptive radiation is the process by which a single ancestral species rapidly diversify into a wide variety of f orms to adapt to different environments or ecological niches.
This typically occurs when a species colonizes a new habitat or experiences a significant environmental change.
Convergent
Divergent
Parallel
Adaptive
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Explanation
Divergent evolution occurs when two species that share a common ancestor evolve different trait s or characteristics over time due to adapting to different environments or ecological niches.
This process leads to increased differences between the species.
Exoskeleton
Notochord
Open circulatory system
Segmented body
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Explanation
The notochord is a flexible, rod-shaped structure that is present during the embryonic stage of all chordates
It provides support and defines the primitive axis of the body.
This characteristic is a key feature that distinguishes chordates from non-chordates.
Phylum
Order
Family
Genus
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Explanation
In the taxonomic hierarchy, the rank that comes directly below the class is the order.
The full hierarchy from broader to more specific categories is:
Domain Kingdom Phylum Class Order Family Genus Species.
Genotype
Phenotype
Allele
Karyotype
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Explanation
The phenotype refers to the observable physical characteristics or traits of an organism, such as:
height eye color skin texture.