I want the answers of these questions. Plz help
Q. The major problem associated with lake Victoria is
(a). Introduction of cichilids into the lake.
(b). Invasive species like water hyacinth
(c). Presence of toxic chemicals that killed all of the animal.
(d). Oill Spills
Q.A pollutant at low concentration stimulates the growth of aplant but is lethal at higher concentration .we propose a model dN/dt=r(c)N where r is the growth rate which is a function of a pollutant concentration C. r(C) CAN BE
a.linear function of c
b.a non linear function of c
c.a sinusoidal function of c
d.none of the above
Q.Trophic pyramid in an ecosystem is constructed by estimating the
a.food types of animals and plants
b.length of the chain
c.relative abundance of each functional feeding group
d.the total number of functional groups
Q. A study of data in 19 th century on availability of lynx and hare fur in Canada revealed that there was a cyclic variation with the same period.this is because
(a).each generation of lynx and hare learnt to avoid traps but did not pass this knowledge on to their succeeding generation
(b).newer trapper replaced old ones and they required time to learn
(c).there was a time gap between the availability of hare meat and lyn reproduction in response
(d).overall variation in sunspot activity
Q.COLOUR OF DISTILLERY INDUSTRY EFFLUENTS is due to the presence of
a.caramel
b.iron oxide
c.dextrose
d.lingo cellulose
Q.forest ground flora are dominated by
a.acanthaceae,araceae,gingers,ferns
b.rubaceae ,meliaciae,ferns ans pines
c.lauraceae,tiliaceae,firs and ferns
d.moraceae,bixaceae ,ferns and oaks
Q.charater displacement is best described as
a.change of behavior induced by scarcity
b.change in morphological features
c.change induced by influences of selfishness in genes
d.changes induced by influence of predators
Q.a drunkard unable to discern the directions would cover in N steps a distance that varies as
a.square root of N
b.cube root of N
c.square of N
d.N
