In DNA, which is absent
Adenine
Thymine
Guanine
Uracil
D.
Uracil
Adenine, Guanine, Cytosine and thymidine are the bases of DNA, while Adenine, Guanine, Cytosine and uracil are the component of RNA.
Sigmoid notch is formed by
cavity formed by humerus
cavity formed by radius-ulna
cavity formed by tibia-fibula
cavity formed by femur
Class Crustacea differs from lnsecta in having
two pairs of antennae
jointed foot
chitinous cuticle
none of the above
If dorsal nerve of spinal cord is broken down then its effect is
no impulse is transmitted
impulse is transmitted but slowly
impulse is transmitted fast
no effect on impulse
Which of the following character is present essentialy in chordates
Ventral spinal chord
Dorsal heart
Pharyngeal gill slits
Blood flow in forward direction in ventral blood vessels