What is pentadactyl limb?

During evolution in which of the following groups, pentadactyl limbs appeared first?

Which is not an odd digitate pentadactylous ?

Explain the following terms. Pentadactyl

Which of the following has paddle like limbs?

Which one of the animals of amphibia has no tongue and limbs?

A U tube is supported with its limbs vertical and is partly filled with water. If the inner diameter of the limbs are 1cm,and 0.01 cm , respectively, what will be the difference in height of water in the two limbs? S.T. or water 70 xx 10^(-3) Nm^(-1) . Angle of contact , theta = 0^(@) .

A U-tube is supported with its limbs vertical and is partly filled with water. If the internal diameters of the limbs are 1xx10^(-2)mand1xx10^(-4)m respectively. What will be the difference in heights of water in the two limbs? (Surface tension of water is 0.07 N/m.)

In mitotic metaphase the limbs of the chromosomes occur

A vertical uniform U tube open at both ends contains mercury. Water is poured in one limb until the level of mercury is depressed 2cm in that limb. What is the length of water column when this happens.