It is stiff rod of special cells surrounded by connecive tissue present in the mid -dorsal region and appears in the embryos of all chordates

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Which of the following nephrons play important role in production of concentrated urine?

A. Crotical B. Medullary C. Juxtramedullary D. None of these...

Malphighian tubules absorb waste materials and salts from__________?

A. Blood B. Lymph C. Gut D. Hemolymph...

The normal pH of human blood is____________?

A. 6.4 B. 7.0 C. 7.4 D. 7.5...

The simplest amino acid is_________?

A. alanine B. glycine C. valine D. phenylalanine...

There are…types of respiration takes place in frog. 1 3 2 N.o.t

3...