Question # 1

Fresh water flatworms excrete

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Very dilute urine

Very concentrated urine

Slightly concentrated

Moderately concentrated urine

Between the seminiferous tubules are interstitial cells which secrete

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Cestrogen

Testosterone

Progesterone

Oxytocin

Pathway of passage of impulse during reflex action is called.

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Reflex

Reflex arc

Stimulus

Membrane potential

O blood has neither A or B antigen but it does have

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Anti - A antibodies

Anti - B antibodies

Anti - O antibodies

Both a & b

Which plants have the adaptation to remove the flooding of its cells in fresh water

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Xerophytes

Mesophytes

Hydrophytes

Chondrocytes

The electrical potencial of cell membrane of meuron when it is not transmission any signal is called ___________

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Resting membrane potencial

Action potencial

Propagation of impulse

Synapse

Which part of the air passage way possesses chartilage plates in its wall?

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Bronchiles

Distal religion of bronchi

Phroximal region of bronchi

Trachea

ABO system has four different phenotypes which are distinct from each other on the basis of specific antigens on the surface of

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Mitochondria

Gogli bodies

RBC

Centrioles

The means by which recombinant DNA is introduced into a host call is called

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Plasmid

Carrier

Vector

Lifter

Why is there no glucose present in the filterate in the distal tubule of a nephron?

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Its molecules are two large to pass across the base ment membrane

It is removed by osmosis from the tubule

It is positively absorp by the cells lining the descending loop of henie

He is actively absorb by hte proximal tubule cells

Turgor pressure is generated by high osmotic pressure is plants cell

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Cytoplasm

Vacuole

Chloroplast

Mitochondria

The position of gene one chromosome is called. its.

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Allele

Phenotype

Locus

Genotype

Rapid movement of leaves of mimosa on touching is a example of.

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Turgor movement

Tropic movement

Nastic movement

Growth movement

The plantigrade animals used to walk on their

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Digits

Tips of toes

soles

Belly

In ascidian fertilized egg, yellow cytoplasm gives rise to

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Larval epidermis

Muscle cells

Notochord

Gut

Mendel called the offspring of first parents as

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F₁

First filial generation

Both a & b

First generation

Testosterone is secreted by

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Sertoli cells

Interstitial cells

Prostrate gland

Germinal epithelium

A pair of kidneys consists of millons of functional units called

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Nephrons

Neurons

Dendrons

Flatirons

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