Which of the following does not match ?
Muscular movement - ATP
Heart - pace maker
Monocyte - haemoglobin
Nerve impulse - acetylcholine
Defect in amino acid metabolism may results in :
albinism
porphyria
Wilson's disease
phenylketonuria
Largest number of chloroplast is found in :
palisade tissue
spongy tissue
transfusion tissue
bundle sheath cells
Growth rings are formed due to activity of :
extrastelar cambium
intrastelar cambium
interstelar cambium
both 'b' and 'c'
In the sporogonium of which plant, columella is present ?
Penicillium
Spirogyra
Rhizopus
Ulothrix
C.
Rhizopus
Rhizopus is a member of Class- Zygomycetes. The sporangium of Rhizopus is divided into two regions, i.e. outer fertile sporiferous zone and a central sterile columella. Columella (in plants) is an axis of sterile tissue which passes through the center of the spore-case of mosses.
Rarely among angiosperms the pollen grains influenced the endosperm. This is called as :
Metaxenia
Nemec phenomenon
Xenia
Mesogamy
Which of the following taxonomist described classification of plant kingdom in "Families of flowering plants" ?
Cronquist
Takhtajan
Benson
Hutchinson