Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.
-
Question 241: The increasing order of the particle size in following soil type is
Options:
A) clay → sand → silt →gravel
B) silt → sand → clay → gravel
C) clay → silt → sand → gravel
D) silt → clay → sand → gravel
Show Answer
The correct answer is C .
-
Question 242: Which of the ways of controlling bilharzia can result in pollution?
Options:
A) clearing water weeds on which the snail feed
B) Treating infected people with drugs
C) Preventing contamination of water by infected urine and faeces
D) Applying chemical to kill the snails
Show Answer
The correct answer is D .
-
Question 243: A tissue can best be defined as
Options:
A) an aggregate of similar cells
B) an aggregate of cells performing a similar function
C) an aggregate of similar cells performing the same function
D) a mixture of different cells types performing the same function
Show Answer
The correct answer is C .
-
Question 244: An example of a caryopsis is
Options:
A) Guava
B) Maize grain
C) Coconut
D) Tomato
Show Answer
The correct answer is B .
-
Question 245: Exo-erythrocytic phase of the life cycle of malaria parasite occurs in the
Options:
A) liver of humans
B) reticuloendothelial cells of humans
C) Malphigian tubules of mosquito
D) brain of humans
Show Answer
The correct answer is A .
-
Question 246:
Sources of air pollutants are
Options:
A) industrial chimneys, burning fossil oils and river dams
B) sulphurdioxide, acid rain and pesticides
C) sulphur dioxide, vehicle exhausts, and aerosols
D) sewage,smoke and old vehicles
Show Answer
The correct answer is C .
-
Question 247: A characteristic that can possibly be shared by both living and non living organisms is
Options:
A) locomotion
B) irritability
C) increase in biomass
D) increase in size
Show Answer
The correct answer is C .
-
Question 248: Blood platelets are important because they are
Options:
A) amoeboid and nucleated
B) produce antitoxins
C) produce antibodies
D) digest harmful bacteria
E) release thrombin for blood clothing
Show Answer
The correct answer is E .
-
Question 249: The annulus of fern sporangium helps in
Options:
A) spore dispersal
B) conduction of mineral salt
C) trapping of light energy
D) water retention
Show Answer
The correct answer is A .
-
Question 250:
What type of vertebrate assists in breathing alongside with the ribs?
Options:
A) Sacral
B) Caudal
C) Thoracic
D) Lumber
Show Answer
The correct answer is C .