Which of the following diagrams is correct with regard to the proximal $(P)$ and distal $(D)$ tubule of the Nephron?

Why do we pass more urine in wet and cold seasons?

Which one of the following options gives the correct categorization of six animals according to the type of nitrogenous waste they excrete?

Option	Ammonotelic	Ureotelic	Uricotelic
$a$	Pigeon,human	Aquatic amphibia,lizards	Cockroach,frog
$b$	Frog,lizards	Aquatic amphibia,humans	Cockroach,pigeon
$c$	Aquatic amphibia	Frog,human	Pigeon,lizards,cockroach
$d$	Aquatic amphibia	Cockroach,humans	Frog,pigeon,lizards

Which one of the following body functions is not performed by kidneys?

An adult human excretes,on average,... liters of urine per day. On an average,... of urea is excreted out per day.

Match the following:
$A$. Loop of Henle: $1$. Carries blood into the kidney
$B$. Renal artery: $2$. Area where a considerable amount of reabsorption takes place
$C$. Proximal convoluted tubule: $3$. Main area of secretion
$D$. Glomerulus: $4$. Filtration of blood
$E$. Distal convoluted tubule: $5$. Plays a role in concentration of urine
The correct pairing sequence is: