Mycorrhiza is an example of
endoparasitism
decomposers
symbiotic relationship
ectoparasitism
C.
symbiotic relationship
Mycorrhiza is a resultof symbiosis between the roots of higher plants and fungi. In this association, plants provide space and prepared food material to fungi in exchange of this, fungi help in absorption of minerals and water to plants.
Barr-body in mammals represents
one of the two X-chromosomes in the cells
all heterochromatin of male and female cells
Y-chromosome of male
all heterochromatin of female cells
Chlorenchyma is known to develop in the
spore capsule of a moss
pollen tube of Pinus
cytoplasm of Chlorella
mycellium of a green mould such as Aspergillus
Which one of the following is wrong in relation to photorespiration?
It is a characteristic of C4 -plants
It is a characteristic of C3 -plants
It occurs in chloroplasts
It occurs in daytime only
Discontinuous variations are
essential features
acquired character
non-essential changes
heritable changes
Boron in green plants assists in
photosynthesis
sugar transport
activation of enzymes
acting as enzyme cofactor
In sugarcane plant, 14CO2 is fixed in a malic acid, in which the enzyme that fixes CO2 is
ribulose phosphate kinase
fructose phosphatase
ribulose biphosphate carboxylase
phosphoenol pyruvic acid carboxylase
Stomata of CAM plants
open during the night and close during the day
never open
are always open
open during the day and close at night
