STD 12 - 7. human health and disease — NEET STD 11 Science — Question

Which of the following option regarding given statements is correct ?
(i) In fishes single circulation present.
(ii) In fishes the heart pumps out deoxygenated blood which is oxygenated by the gills.
(iii) In amphibians and reptiles incomplete double circulation present.
(iv) In amphibians and reptiles, oxygenated blood and the deoxygenated blood get mixed up in the single ventricle which pumps out mixed blood.
(v) In birds and mammals two separate circulatory pathways are present in these organisms, hence, these animals have double circulation.
(vi) In heart of fish deoxygenated blood present.

The vital capacity of the lung signifies the volume of air

Statement I: Louis Pasteur demonstrated that life comes only from pre-existing life.
Statement II: Oparin of England and Haldane of Russia proposed that the first form of life could have come from pre existing non-living organic molecules.

Planaria possesses high capacity of

Blood leaving liver and moving to heart will have more concentration of

Body cavity surrounding alimentary canal but it is not lined by cellular layer in which of the following

Select the correct statements

The junction between the axon of one neuron and the dendrite of the next is called