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Biology

Biology
PH of human blood is

6.2
9
7.5 - 8.0
7.4

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Biology
Pellagra and Scurvy are caused by which pair of vitamin deficiency respectively ________

VitaminC and VitaminA
VitaminB-12 and VitaminC
Vitamin A and VitaminB-12
VitaminC and VitaminD

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Biology
A cell wall material present only in blue green algae and bacteria is

Muramic acid
Cellulose
Pectin
Glycogen

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Biology
Spiders belong to the phylum

Arthropoda
Mollusca
Annelida
Cnidaria

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Biology
Gregor Johann Mendel worked on

Wild pea
Garden pea
Pigeon pea
Edible pea

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Biology
Compared to land, the open oceans

Contain unlimited nitrogen
Are rich in silica and iron
Are nutrient-poor environments
Are nutrient-rich environments

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