Defect in amino acid metabolism may results in :
albinism
porphyria
Wilson's disease
phenylketonuria
D.
phenylketonuria
Defect in amino acid metabolism is known as phenylketonuria. Children suffering with this disease are unable to breakdown Phenyl Pyruvic acid into Hydroxy phenyl pyruvic acid. Therefore, accumulation of phenyl pyruvic acid results in mental disorder.
Rarely among angiosperms the pollen grains influenced the endosperm. This is called as :
Metaxenia
Nemec phenomenon
Xenia
Mesogamy
Largest number of chloroplast is found in :
palisade tissue
spongy tissue
transfusion tissue
bundle sheath cells
Which of the following does not match ?
Muscular movement - ATP
Heart - pace maker
Monocyte - haemoglobin
Nerve impulse - acetylcholine
Which of the following taxonomist described classification of plant kingdom in "Families of flowering plants" ?
Cronquist
Takhtajan
Benson
Hutchinson
Growth rings are formed due to activity of :
extrastelar cambium
intrastelar cambium
interstelar cambium
both 'b' and 'c'