They are considered to be the most primitive and are surely the first of the vertebrates?
A. Frogs
B. Reptiles
C. Amphibinas
D. Jawless fishes
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Which of the following filtrate contains excessive amount of amino acids, glucose, and salts?
A. Glomerular filtrate
B. Filtrate passing through ascending limb
C. Filtrate passing through distal conveluted tubule
D. Filtrate passing through collecting tubules
Scolidon or dog fish belong to the group of fishes called__________?
A. Cartilaginous fishes
B. Bony fishes
C. Running fishes
D. Jawless fishes
Malphighian tubules absorb waste materials and salts from__________?
A. Blood
B. Lymph
C. Gut
D. Hemolymph
Nephrostome in earthworm opens in____________?
A. External space
B. Internal Body cavity
C. In gut
D. In Bladder
Which of the following openings have cilia?
A. Nephrostome
B. Nephridiopore
C. Both of these
D. None of these
The nephridia of earthworm open into the coelom by_________?
A. Nephrostome
B. Nephridiopore
C. Flame cell
D. Anus
Which of the following animal excrete nitrogenous waste mainly as uric acid?
A. Hydra
B. Planaria.
C. Humans
D. Birds.
Thick, waxy & leathery cuticle around leaves is present in___________?
A. Hydrophytes
B. Mesophytes
C. Xerophytes
D. Halophytes
Bats & humming birds belong to___________?
A. Endotherms
B. Ectotherms
C. Heterotherms
D. Homeotherms