1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Besides paddy fields, cyanobacteria are also found inside vegetative part of :
A
Cycus
B
Psilotum
C
Pinus
D
Equisetum
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A biologist studied the population of rats in a barn, He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is :
A
15
B
05
C
10
D
zero
3
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Cuscuta is an example of :
A
Ectoparasitism
B
Predation
C
Endoparasitism
D
Brood parasitism
4
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
The logistic population growth is expressed by the equation :
A
$$dt/dN = Nr\left( {{{K - N} \over K}} \right)$$
B
$$dN/dt = rN\left( {{{K - N} \over K}} \right)$$
C
$$dN/dt = rN\left( {{{N - K} \over N}} \right)$$
D
$$dN/dt = rN$$
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