Which one of the followings is not a refractive medium of the eye?
Lens
Vitreous humour
Aqueous humour
Pupil
D.
Pupil
Pupil is not considered as a refractive medium of the eye. The eye contains various refractive media within it which effectively bend and refract the incoming light, so that it is all focused upon a certain point on the retina. This refraction can only occur with the use of refractive media and in some cases refractive media which can change their respective refractive power (the lens).
TCA cycle enzymes are located in
cristae
outer membrane
mitochondrial matrix
mitochondrial intermembrane space
C4 pathway is advantageous over C3 pathway in plants as it
occurs in relatively low CO2 concentration
uses more amount of water
occurs in relatively low O2 concentration
is less efficient in energy utilisation
Vernalisation promotes flowering by
low temperature
high temperature
prolonged photoperiod
short photoperiod
The eukaryotic cells have all of the followings except
peptidoglycan in the cell wall
the 80 S ribosome
nuclear membrane
mitochondria
Which one of the followings is not a characteristic feature of mammals?
Diphyodont tooth
Ten pairs of cranial nerves
Seven cervical vertebrae
Left aortic arch in the circulatory system
Which one of the following statements is incorrect?
Insects have one pair of antenna
Millipeds possess two pairs of appendages in each segment of the body
Prawns have two pairs of antenna
Animals belonging to the phylum- Porifera have nematocys
Which of the followings does not occur in the interphase of eukaryotic cell division?
Increase of ATP synthesis
Increase of DNA synthesis
Increase of RNA synthesis
Reduction in cell size
Which one of the followings is the functional unit of hearing?
Utricle
Organ of Zuckerkandl
Organ of Corti
Vestibular apparatus
