Which one of the following statements in...

Which one of the following statements in regard to the excretion by the human kidneys is correct?

Ascending limb of Loop of Henle is impermeable to electrolytes

Descending limb of Loop of Henle is impermeable to water

Distal convoluted tubule is incapable of reabsorbind `HCO_(3)^(-)` ,

Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules

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Which one of the following statements regarding CO gas is correct ?

It is produced by the complete combustion of fossil fuels.

It combines with haemoglobin to form carbamino-haemoglobin.

It impairs oxygen transport resulting in giddiness, headache, asphyxia and even death.

All of these

Head is oval is shape

There are 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)

Heart is differentiated into funnel shaped chambers with setae on either side

Each eye consists of about 1000 hexagonal ommatidia