Question # 1

Study of aging is called

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Teratology

Gerontology

Cell biology

Paleontology

The parts of body use extensivly to cope with the environment become larger & stronger, while those that are not used deteriorate was argued by:

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Charls darwin

Alfred wallace

Carolus

Lamorck

Auxins promote growth of roots from

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Cutting

Calluses

Both a & b

Layering

The wall of trachea(windpipe) and bronchi of man is fernished with a series of incomplete:

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Cartilagenous plates

Chitinous rings

Cartilaginous rings

Muscular rings

The first restriction enzyme was isolated by

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Kary mulis

Hamilton O. smith

Sagar

Maxam gilbret

Programmed and organized death of cell is known as.

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Apoptosis

Cancer

Necrosis

Metastasis

The most concentrated external environment is termed as.

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Hypotonic

Hypertonic

Osmotic

Isotonic

Tube feet are locomotor organs of.

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Jelly fish

Cottle fish

Star fish

Silver fish

The chief nitrogenous waste in birds and reptiles is

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NH3

Urea

Uric Acid

Creatirine

Liver also has numerous crucial functions of.

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Osmoregulation

Homeostasis

Thermoregulation

Excretion

Different alleles of a gene that are both expressed in heterozygous condition are called.

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codominant

Over dominant

Complete dominant

Incomplete dominant

Bundle caps in sunflower stem, are formed by

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Sclerenchyma

Parenchyma

Mesenchyma

Collenchyma

Meiosis II is just like the

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Amitosis

Mitosis

Replacement

Regenerations

Which one of the following is endangered in Pakistan.

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Indian rhino

Indus Dolphin

tiger

Cheer pheasant

Oxygen carryiing capacity of blood does not depend upon:

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Particle pressure of CO₂

Particle pressure of O₂

Height from sea level

Quantity of blood

Young tissues retaining the potential to divide.

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Meristem

Xylem

Phloem

Cork

Nissl's granules are group of.

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Mesosomes

Lysosomes

Ribosomes

chromosomes

If population of predator increase then population of prey

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Increases

Decreases

May increase

Has no effect or decrease

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