Prep
Bee
Pakistan
Pakistan's #1 Free MCQ Practice Platform for Govt Job Exams
MCQs
Categories
Quiz
Past Papers
Quiz Mode
Login
Register
Preparing your study page...
Search MCQs
Search and filters
Search
Subject
Any subject
Agriculture
Biology
Chemical Engineering
Chemistry
Computer Science
Current Affairs
Economics
English
Everyday Science
General Knowledge
Intelligence
International Current Affairs
Islamic Studies
Judiciary And Law
Management Sciences
Mathematics
Mechanical Engineering
Medical Science
Pakistan Current Affairs
Pakistan Studies
Pedagogy
Physical Education
Physics
Psychology
Sociology
Software Engineering
Urdu
Difficulty
Any
Easy
Medium
Hard
Language
Any
English
Urdu
Bilingual
Sort
Latest
Oldest
Most attempted
Apply
MEDIUM
ENGLISH
Agriculture
The SO2 is returned to the atmosphere by:
A
Metabolism of producers
Option A
B
Metabolism of consumers
Option B
C
Both (a) & (b)
Option C
D
Combustion of fuel
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
According to Odum the light absorbed by the plant cover in terms of kcal/m2/day is:
A
150
Option A
B
1,500
Option B
C
300
Option C
D
3,000
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
The maximum amount of CO2 fixed by green plants by way of photosynthesis in a year is:
A
9 x 1013 kg
Option A
B
8 x 1012 kg
Option B
C
9 x 1011 kg
Option C
D
8 x 1010 kg
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
Hydrological cycle is under the control of:
A
Grasslands
Option A
B
Forests
Option B
C
Planktons
Option C
D
Epiphytes
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
The sulphate rocks are formed in ocean by leaching of:
A
FeS and Fe2S3
Option A
B
Organic sulphates and -SH
Option B
C
Soluble inorganic sulphates
Option C
D
All of these
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
Mark the incorrect statement with reference to carbon cycle:
A
Lime rocks contribute to CO2 of water
Option A
B
Atmospheric CO2 gets dissolved in water
Option B
C
CO2 is returned by combustion of fuel
Option C
D
75% of total carbon lies in geological component
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected because:
A
Herbivores will not receive solar energy
Option A
B
Rate of decomposition of other component will be very high
Option B
C
Mineral movement will be blocked
Option C
D
Energy flow will be blocked
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
Ecosystem receives nitrogen from outside through:
A
Biological nitrogen fixation
Option A
B
Electrification of nitrogen
Option B
C
Industries
Option C
D
All the above
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
Energy transfer from one trophic level to other in a food chain is:
A
1%
Option A
B
2%
Option B
C
10%
Option C
D
20%
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
Niche of a species in an ecosystem refers to its:
A
Place of occurrence
Option A
B
Competitive ability
Option B
C
Centre of origin
Option C
D
Function at its place of occurrence
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
One of the major difficulties in the biological control of insect pests is that:
A
The predator develops a preference to other diets and may itself become a pest
Option A
B
They do not always survive when transferred to a new environment
Option B
C
The method is less effective as compared to the use of insecticides
Option C
D
The practical difficulty in introducing the predator to specific area
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
The transfer of energy from one trophic level to another is governed by the 2nd law of thermodynamics. The average efficiency of energy transfer from herbivores to carnivores is:
A
25%
Option A
B
50%
Option B
C
10%
Option C
D
5%
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
Which one of the following pairs is a sedimentary type of biogeochemical cycle?
A
Oxygen and nitrogen
Option A
B
Phosphorus and Sulphur
Option B
C
Phosphorus and CO2
Option C
D
Phosphorus and nitrogen
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
Which one of the following elements is the critical limiting factors in the function of ecosphere because of its irretrievable loss in the ocear:
A
Fe
Option A
B
P
Option B
C
Mg
Option C
D
Ca
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
Biosphere is that:
A
By which life originated
Option A
B
Where individuals interact with each other
Option B
C
Which relates to spherical organisms
Option C
D
Organic compound by which the life diminishes
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
The number of kinds of food chains:
A
One
Option A
B
Two
Option B
C
Three
Option C
D
Four
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
The first fish that eats upon the planktonic forms is:
A
Primary consumer
Option A
B
Carnivore
Option B
C
Decomposer
Option C
D
Secondary consumer
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
An ecosystem is:
A
A functional unit of biotic and abiotic components which have an energy source
Option A
B
Either a part of land surface, a body of fresh water or the open oceans
Option B
C
A functional unit consisting of sunlight, air water and minerals
Option C
D
A system consisting of an energy source, producers and consumers
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
The study of interaction between living organisms and environment in a specific area is the study of:
A
Photobiology
Option A
B
Phytogeography
Option B
C
Ecosystem
Option C
D
Phytosociology
Option D
Show Answer
Open Detail
MEDIUM
ENGLISH
Agriculture
The whale is:
A
Primary producer
Option A
B
Secondary consumer
Option B
C
A decomposer
Option C
D
Herbivores
Option D
Show Answer
Open Detail
Previous page
1
5742
5743
5744
5745
5746
5754
Next page