Question # 1

Clear cytoplasm produces.

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Muscle cells

Gut

Larval epidermis

Notochord

The mesodermal cells do not invaginate but migrate medially and caudally from both sides and create a midline thickening called.

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Hensen's node

Primitive streak

Hypoblast

epiblast

Hypoblast is mainly presumptive

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Endoderm

Mesoderm

Ectoderm

Blastoderm

Hatching period of chick is.

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15 days

18 days

21 days

28 days

A plant has a growth pattern called.

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Open growth

Meristem

Growing point

Apical

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

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embryo

Gray crescent

Yolk

White cytoplasm

Environmental factors causing abnormal development are grouped together as.

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Toxins

Carcinogens

Teratogens

Mutagens

Which one of the following condition is resulted from excess GH in adults?

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Cushing's disease

Acromegaly

Hyperthyroidism

Diabetes mellitus

in plants regeneration is the basis of plant

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Fishes

Amphibian

Reptiles

Birds

In the zone of elongation, the volume of the cells increase upto.

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100 times

150 times

200 times

250 times

Unspecialized cells, neoblast are always present in body of.

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Salamander

Planaria

Lizard

Newt

The addrenaline cortex produces ______________

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Adrenaline

Calcitonin

Epinephrine

Aldosterone

Deficiency of vasopressin or ADH by the pituitary gland leads to a disorder in which the patients kidney have lessoned ability to absorb water is:

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Diabetes mellitus

Diabetes insipidus

Goiter

Exophthalmic goiter

Young tissues retaining the potential to divide.

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Meristem

Xylem

Phloem

Cork

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

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Segments

Fragments

Somitcs

Remains

Which light enhance cell division and retards cell enlargment.

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Red

Green

Blue

Violet

Secondary growth leads to an increase in the diameter if the.

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Leaf

Root

Stem

Stem and root

In incubating eggs artificially the incubators are usually regulated at temperature between

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20 - 22^oC

27 - 29^oC

30 - 32^oC

36 - 38^oC

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