Zoology
The small sized honey bee, employed for commercial bee keeping in Pakistan is:
A.
Apis mellifera
B.
Apis indiea
C.
Apis dorsata
D.
Apis florae
Sleeping sickness is caused by:
A.
Trypanosoma cruzi
B.
Glossina palpalis
C.
Trypanosoma gambiense
D.
Sandfly
Cutaneous Leishmaniasis is caused by:
A.
Leishmania donovani
B.
Leishmania brasiliensis
C.
Leishmania tropica
D.
Trypanosoma gambiense
The presence of Ozone (O2) in atmosphere of earth:
A.
Is advantageous since it supplies O2 for people travelling in jet planes
B.
Helps in checking the penetration of UV-rays to earth
C.
Hinders higher rate of photosynthesis
D.
Helps in increasing the global temperature
If BOD of river is high, it means that the river:
A.
Is not polluted
B.
Is very polluted
C.
Gets least amount of light
D.
Does not have green plants
Mark the correct match:
A.
Biogas - Ethane
B.
Non-degradable pollutant D.D.T
C.
Degradable pollutant - CO
D.
Most active air pollutant - CO2
The bacteria which attack the dead animals are:
A.
The end of food chain and are decomposers
B.
1st link of food chain and are known as primary producers
C.
2nd link of food chain and are herbivores
D.
3rd link of food chain and are tertiary consumers
What is the best arrangement of an energy system consisting of hawks, snakes, mice and grasses?
A.
Grasses - Hawks - Mice - Snakes
B.
Grasses - Mice - Snakes - Hawks
C.
Mice - Snakes - Hawks - Grasses
D.
Snakes - Hawks - Mice - Grasses
Synecology is:
A.
The ecological study of groups of plants or animals
B.
The ecological study of two distinct species living in separate but similar environmental conditions
C.
The study of ecology of bottom dwelling forms
D.
The ecological role of sunlight
Whale and certain sharks grow into largest creatures of the earth. This is possible due to:
A.
Support provided by the water
B.
Genetic abnormality
C.
Availability of plenty of large preys
D.
Sluggish mode of life
Palaecology is the study of:
A.
Fossil organisms
B.
Ecological niche
C.
Environmental condition and life that existed in past
D.
The study of living and non-living components of forest
Discontinuous variation are:
A.
Mutations
B.
Acquired characters
C.
Natural selection
D.
Isolation
To be a successful event for evolution a mutation must occur in:
A.
Germplasm DNA
B.
Somatoplasm DNA
C.
mRNA
D.
tRNA
Lamarck's theory of organic evolution is popularly stated as:
A.
Inheritance of mutual characters
B.
Inheritance of acquired characters
C.
Inheritance of vestigial characters
D.
Inheritance of ancestral characters
Mark the true statement:
A.
Dinosaurs andmammals evolved simultaneously
B.
Dinosaurs evolved earlier than mammals
C.
Mammals evolved earlier than dinosaurs
D.
Mammals evolved from dinosaurs
Darwin defined organic evolution as:
A.
Adaptation through natural selection
B.
Adaptation through generation
C.
Gradual changes in time
D.
Descent with modification
Mark the correctly matching set:
A.
Use and disuse theory - Darwin
B.
Theory of pangenesis - Lamarck
C.
Recapiyulation theory - Haeckel
D.
Orthogenesis theory - Wagner
According to one of the most widely accepted theories, the earth's atmosphere before any life had originated on this palnet, consisted of a mixture of:
A.
H2O, H2, NH3, CH4
B.
H2, CO, NH3, CH4
C.
O2, NH3, CH4, water vapours
D.
O,CH4, O2, Water vapours
Which of the following is the common Indian Pearl Oyster?
A.
Pinctada indica
B.
Pinctada vulgaris
C.
Ostera indica
D.
Ostrea vulgaris
Physiological evidence in favour of evolution is demonstrated by:
A.
similarity in construction of body Structures
B.
Closely related forms being placed in the same group of animals
C.
Haeckel's biogenetic law, including biochemicak recapitulation
D.
Indentity in functioning of hormones and chemico-physiological nature of blood
In mammalian embryo the placenta is formed by:
A.
Amnion
B.
Chorion
C.
Allantois
D.
Allanto-chorion
When egg is laid in hen, the embryo is in:
A.
Zygote stage
B.
Blastula stage
C.
Complete gastrula stage
D.
Incomplete gastrula stage
Neoteny is the:
A.
Retention of larval characters beyond the larval period
B.
Retention of larval characters before the adulthood
C.
Retention of notochord as such
D.
Sexual phase in the Asciadian larva
In retrogressive metamorphosis:
A.
Highly advanced larva changes into less developed larva
B.
Highly advanced larva changes into highly advanced adult
C.
Less developed larva changes into highly developed larva
D.
Highly advanced larva changes into less developed adult
Which is the retrogressive change in the metamorphosis of frog?
A.
Formation of tail
B.
Shedding of jaws
C.
Regeneration of injured limbs
D.
Widening of mouth