Question 1 of 20 153 total questions
The process which ensures that the chromosome number for each species of organism remains constant from generation to generation is called
A fission
B fusion
C meiosis
D mitosis
E oogenesis
Which of the following sequences best illustrates a food chain in an aquatic habitat ?
A algae → fungi → toad → snake
B diatoms → tadpole → fish → kingfisher
C grass → grasshopper → toad → whale
D phytoplankton → fish → snake → kingfisher
E zooplankton → tadpoles → fish → kingfisher
The streaming movement of cytoplasm observed in a freshly cut leaf of a water plant is termed
A amoeboids
B centrifugal motion
C ciliary motion
D cyclosis
E osmosis
During blood transfusion, agglutination could be prevented if a patient having blood group O is given blood
Which of the following terms is not associated with fingerprint and classification?
A Whorl
B Contour
C Arch
D Loop
Which of the following represents Mendel’s second law of inheritance? The factors for two pairs of contrasting
A dependent on each other
B on homologous chromosomes
C allelomorphic
D inherited independently of each other
The concept of use and disuse of parts was postulated by
A Darwin
B Larmarck
C Miller
D Wallace
Character which falls to express itself in the first filial generation but emerges in the second is
A heterozygote
B homozygote
C dominant
D recessive
Which of the following resources is non-renewable?
A Forest
B Wildlife
C Mineral deposits
D Water
Which of the following is not a means of conserving natural resources?
A Establishment of national parks
B Selective logging
C Building of dams
D Bush burning
The major reason why foods should be properly covered is that
A micro-organisms in air would contaminate the food
B hot foods cool off easily when properly covered
C the taste of the food is maintained when covered
D all water easily evaporates from uncovered food
Trypanosomiasis is associated with
A cockcroach
B mosquito
C housefly
D tsetse fly
Which of the following best describes the adaptation of the earthworm to its habitat?
A Living in burrow during the day to prevent desiccation
B Burrowing into soft soil to store food
C Possession of segmented body to reduce movement
D Possession of a few bristles for defence
Parasitism can best be defined as an association between two organisms in which
A both organisms benefit
B one organism gains and the other neither gains nor loses
C both organisms suffer some disadvantages
D one organism gains and the other loses
In commensalism
A one of the organisms gains and the other loses
B both organisms benefit from the association
C one of the organisms gains while the other neither gains nor loses
D one of the organisms produces extra cellular Digestive juices.
Which of the following is not released during decay of living matter?
A Ammonia
B Oxygen
C Carbon dioxide
D Heat energy
Which of the following organisms will not bring about decomposition?
A Earthworm
B Bactenum
C Mould
D Spirogyra
Which of the following groups consists of heterotrophs?
A Mucor, chlamydomonas and Euglena
B Spirogyra, Mucor and Mushroom
C Man, Mucor and Mushroom
D Man, Maize and Cowpea
Which of the following organisms is a producer?
A Spirogyra
B Mucor
C Rhizopus
D Yeast
The abiotic factor which determines the depth to which light penetrates in a pond is
A current
B turbidity
C wind
D salinity
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