Question # 1

In chordates the healing of fracture and repair of a skin wound are some other examples of

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Reformation

Regeneration

Rejuvenation

Renaissance

Acetabularia is a

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Epiphyte

Alga

fungus

Angiosperm

The functions of oxytocin islare to ___________

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Cause the uterus to contract

Induce labor

Stimulate the release of milk from the mother's mammary glands when her baby is nursing

All of the above

The pigment free area that appears at the time of fertilization is called.

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embryo

Gray crescent

Yolk

White cytoplasm

In which developmental stage, germ layers are formed.

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Cleavage

Blastula

Gastrula

Organogenesis

The removal of apex release that lateral buds from the apical dominance. It is called

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Inhibitory effect

Compensatory effect

Apical dominance

Reproduction

in plants regeneration is the basis of plant

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Fishes

Amphibian

Reptiles

Birds

Which prosess is characterized by movement and rearrangement of cells in the embryo

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Blastulation

None of these

Neurulation

Gastrulation

Which light enhance cell division and retards cell enlargment.

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Red

Green

Blue

Violet

During elongation, the cell volume increase upto.

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50 fold

100 fold

150 fold

200 fold

The addrenaline cortex produces ______________

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Adrenaline

Calcitonin

Epinephrine

Aldosterone

Cambium is formed in stage.

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One

Two

Three

Four

During gastrulation the blastoderm splits into two layers, an upper layer of cells is called.

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Hypoblast

Area pellucida

Epiblast

Area Opaca

From Hensen's node,dorsal mesoderm is formed and is organized into

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Segments

Fragments

Somitcs

Remains

Hatching period of chick is.

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15 days

18 days

21 days

28 days

Branch of biology which deals with the study of abnormal development and their cause is called.

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Embryology

Teratology

Gerontology

Microcephaly

_______ regulates the kidney's retention of water.

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Prolactin

Oxytocin

Thyroxin

Vasopressin (ADN)

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