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Biology

Biology
Which of the following is a fresh water sponge ?

Spongilla
Euspongia
Sycon
Pleurobrachia

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Biology
Placenta is the structure formed

by foetus only
by the union of foetal and uterine tissue
by fusion of germ layers
None of these

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Biology
In 1910, who proved the idea of W.S.Sutton that genes are located on chromosomes?

De Duve
T.H.Morgan
Palade
Waldeyer

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Biology
Consider the following plant1. Guava2. Mint3. Sweet potatoThe roots of which of these plants bear adventitious buds that developed into new individuals under favourable conditions

2 only
1, 2 and 3
3 only
1 and 2

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Biology
________ is a thyroid hormone which controls the balance of calcium in the body.

All of these
Calmodulin
Calcitonin
Thyroxine

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Biology
Muscular wall of the heart is externally covered by

Epithelium
Endothelium
Epicardium
Myocardium

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