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Biology

Biology
Which one of following is known as pace maker of endocrine gland

Insulin
Calcitonin
Adrenalin
Thyroxin

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Biology
The thyroid hormone that regulates carbohydrate metabolism is

Estrogen
Parathormone
Thyroxin
Parathyroid

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Biology
Muscular wall of the heart is externally covered by

Myocardium
Epithelium
Epicardium
Endothelium

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Biology
Which describes the correct pairing of DNA bases?

Adenine - cytosine
Guanine - thymine
Guanine - cytosine
Thymine - cytosine

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Biology
Study of typical behaviour of organisms in their natural habitatis is called

Euthenics
Eugenics
Ethnology
Ehology

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Biology
Which of these is unique to flowering plants?

Haploid gametophytes
Double fertilization
An embryo surrounded by nutritive tissue
Pollen production

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