Solve your IGNOU Doubts
Solve your IGNOU Doubts
Question:

What is parasitic adaptation? Explain the adaptations that have taken place in Ascaris lumbricoides.

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Question:

Describe parental care in amphibians.

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Question:

Write the classification of class Mammalia.

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Question:

Inner cell mass

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Question:

Epiblast

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Question:

Fate maps

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Question:

Morphogenetic movements

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Question:

Blastoderm

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Question:

Describe the process of neurulation in frog.

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Question:

List at least three stages in gene expression that can be regulated to result in differentiated cell types? Explain any one of them with the help of an example.

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Question:

How is EMT used in the embryo and in the adult?

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Question:

What is the difference between juxtacrine and paracrine signalling?

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Question:

How would you define a ligand in cell-to cell signalling?

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Question:

Explain the role of fate maps and patterns of development.

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Question:

Briefly write the functions of the following hormones secreted in mammals.

a) Adrenocoricotropic hormone

b) Parathormone

c) Aldosterone

d) Testosterone

e) Progesterone

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Question:

Why are large cutaneous veins present in amphibians?

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Question:

What are precaval veins?

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Question:

What is the fate of lateral abdominal veins in teleosts and lung fishes?

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Question:

What are the veins in fishes that bring blood from the fins?

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Question:

What are the three sets of paired veins present in the early embryonic stage of vertebrates?

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