1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
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
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Besides paddy fields, cyanobacteria are also found inside vegetative part of :
A
Cycus
B
Psilotum
C
Pinus
D
Equisetum
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is :
A
Commensalism
B
Commensalism
C
Ectoparasitism
D
Symbiosis
4
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
Change Language
Cuscuta is an example of :
A
Ectoparasitism
B
Predation
C
Endoparasitism
D
Brood parasitism
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