The hormone that increases the blood calcium level and decreases its excretion by kidney is 

A) Both are true

C) calcium phosphate & calcium carbonate

Correct option is D) Matrix

D) Presence of liver above it

A) Right kidney – slightly lower than left kidney

Answer is (D) (iv) only

Answer is (D) i, ii and iv

B) i – Ghrelin; ii – Leptin

Correct option is  B) False

Yes, various organs other than the kidney participate in excretion. They are as follows:  i. Skin:  Skin acts as an accessory excretory organ. The skin of many organisms is thin and permeable. It...