Question # 1

Buoyancy in the water is maintained by a specialized structure in bony fish called

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Fins

Swim bladder

Tail

Both a & c

The urine leaves the body during urination from bladder through a tube called.

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Pelvis

Urethra

Ureter

Medulla

Which organ is the central station of Metabolism.

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Liver

Kidney

Spleen

Skin

Cardiac muscles are muscles of the

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Liver

Stomach

Kidney

Heart

Cambium is formed in stage.

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One

Two

Three

Four

Bipedal locomotion freed the front appendages which become adapted for

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Prey capture

Flight

Both a & b

None of these

The receptor cells of Planaria are sensitive to.

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Light and pressure

Light pressure and touch

Touch , pressure and chemicals

Light, pressure, touch and chemicals

Which of the following statements conserning the role of Ca⁺² inthe contraction of skeletal muscle is correct?

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The mitochondria act as a store of Ca⁺²for the contractile process

Ca⁺²entry across the plasma membrane is important in sustaining the contraction of skeletal muscle

A rise in inter cellular Ca⁺²allows actin to interact with myosin

The tension of a skeletal muscle fiber is partly regulated by G proteins muscle

Second meiotic division in oocytes, until fertilization proceeds as far as.

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Prophase

Metaphase

Telophase

Anaphase

Acetabularia is a

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Epiphyte

Alga

fungus

Angiosperm

Liver acts as store house of.

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Bile

Albumin

R.B.Cs

Iron

Temperature around 4^oC stimulates the production of.

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Florigen

Vernalin

Ethene

Auxins

Among vertebrates uric acid is the chief nitrogenous waste in birds and

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Fishes

amphibians

Reptiles

Mammals

The addrenaline cortex produces ______________

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Adrenaline

Calcitonin

Epinephrine

Aldosterone

Frogs and toads also walk and hop on land due to strong

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Forelimbs

Hindlimbs

Trunk

Head

A dichromate can perceive two primary colours but is unable to perceive the one whose opsins are missing due to

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Metamorphosis

Transmutation

Alteration

Mutation

Luteinizing hormone induces

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Flowering

Ovulation

Vernalisation

Menopause

Which one is absent in animal cells.

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spindle

Centriole

Chromatids

Phragmoplast

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