2016 - JAMB Biology Past Questions and Answers - page 4
31
The adaptive importance of the nuptial flight from termite colonies is to
A
ensure cross-breeding between members of one colony and another
B
disperse the reproductives in order to establish new colonies
C
provide abundant food for birds and other animals during the early rains
D
expel the reproductives so as to provide enough food for other members
correct option: b
Users' Answers & Comments32
The sequence of the one-way gaseous exchange mechanism in a fish is
A
gills ⇢ operculum ⇢ mouth
B
mouth ⇢ gills ⇢ operculum
C
mouth ⇢ operculum ⇢ gills
D
operculum ⇢ mouth ⇢ gills
correct option: b
Users' Answers & Comments33
In the nitrogen cycle, the nitrates in the soil are converted to atmospheric nitrogen by
A
puterfying bacteria
B
nitrogen-fixing bacteria
C
nitrifying bacteria
D
denitrifying bacteria
correct option: d
Users' Answers & Comments34
The relationship between a termite and the protozoam in its intestine is described as
A
predation
B
saproplytism
C
symbiosis
D
parasitism
correct option: c
Users' Answers & Comments35
Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
A
liver of humans
B
reticuloendothelial cells of humans
C
Malphigian tubules of mosquito
D
brain of humans
correct option: a
Users' Answers & Comments36
Which of the following organs regulates the levels of water. salts, hydrogen ions, and urea in the mammals?
A
Kidney
B
Colon
C
Bladder
D
Liver
correct option: a
Users' Answers & Comments37
The rate of transpiration is NOT affected by
A
the weight of the stomata pores
B
humidity
C
temperature
D
the size of the stomata pores
correct option: a
Users' Answers & Comments38
The crossing of individuals of the same species with different genetic characters is
A
croos breeding
B
polygenic inheritance
C
non-disjunctin
D
inbreeding
correct option: a
Users' Answers & Comments39
The hereditary characters in plants and animals are located on the
A
gene
B
mucleus
C
chromosome
D
cell
correct option: c
Users' Answers & Comments40
The arrangement of ovules attached to the sides of a syncarpous ovary with a single chamber is referred to as
A
free-central placentation
B
axile placentation
C
parietal placentation
D
marginal placentation
correct option: c
Users' Answers & Comments