Which are true about the following state...

Which are true about the following statements about kangaroo rats
(a) They have dark colour, high rate of reproduction and excrete solide urine
(b) They do not drink water, breathe at slow rate, and have their body covered with thick hair
(c) The feed on dry seeds and do not require drinking water
(d) They excrete very concentrated urine and do not use water to regulate body temperature

c and a

a and b

c and d

b and c

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Which of the following statements is true about water hyacinth?

It gives useful products to be used in medicine

It is a marine plant

It takes oxygen from water which causes death of fishes

It is being cultivated in sea water for biogas

Human excretes 25-30gm urea per day

Glucose and amino acids are absorbed passively in renal tubules

Descending loop of Henle is impermeable to water

Kidneys reabsorbed `2//3 ^(rd)` part of glomerular filtrate.

All bony fishes are ammonotelic.

Aquatic mammals are ureotelic

Insects such as cockroach are ammonotelic.

Tadpole of frog is ureotelic