Question 1 of 20 5,032 total questions
The special name of the part labelled II is
A gametangium
B hypha
C suspensor
D zygospore
The structure labelled I is formed as a result of the fusion of
A two pairs of nuclei
B several pairs of nuclei
C a pair of nuclei
D two pairs of nucleoli
In snails, the hard calcareous shells are secreted by the
A radula
B ctenidium
C pneumostome
D mantle
The natural tendency of organisms as they evolve is to
A decrease in size
B increase in number
C develop specialize structure
D feed indiscriminately
The procaryotic cell type is characterized by a
A complex cytoplasm in which different regions are poorly defined
B localization of different regions of the cell into tissues
C collection of organelles and macromolecular complexes
D simple cytoplasm with well defined regions
The nucleus is considered the central organelle of a cell because it
A contains the genetic material
B contains the nuclear sap
C is bounded by the nuclear membrane
D is located at the center of the cell
Which of the following behavioural patterns describes adaptive colouration?
A Counter shadding
B Hibernation
C Aestivation
D Aggregation
E Migration
Bees communicate with one another to obtain information about the direction of food source through
A complicated set of dances
B smell
C contract notes
D observation
E sounds
Which of the following characteristics distinguishes the soldier termite from other members of the caste?
A Wingless, strong mandibles and large head
B Small head, small thorax and large abdomen
C Small head, Wingless, and small thorax
D Small head, winged and small thorax
E Small mandibles, small head and wingless.
In an inter-species competition, the less successful species usually
A reproduce faster
B become more active
C become domant
D occupy more space
E become eliminated
In which of the following is the knowledge of genetics not applicable?
A Development of high-yielding varieties
B Preservation of seeds
C Development of early maturing varieties
D Development of early maturing seed
In man haemophilia is recessive and sex linked, The
Which of the following is not a morphological variation
A Shape of nose
B Colour of skin
C Colour of eyes
D Ear lobe
E Tongue rolling
In which of the underlisted blood groupings is agglutination likely to occur during transfusion?
One of the use of variation is in
A determining the size and weight of an individual
B determining paternity
C conservation of wildlife
D controlling of disease vector
E sex determination
Which of the following farm practices can cause loss of soil fertility?
A Mulching
B Compost application
C Use of fertilizers
D Terracing
E intensive cropping
In palm-wine, yeast acts as a
A carrier
B culturing agent
C preservative
D catalyst
E sweetening agent
The farming practice by which an exhausted farm land is left for a number of years before cultivation is
A crop rotation
B continuous cropping
C monocropping
D bush fallowing
E mixed cropping
Crops grown mainly to feed animals are called
A forage crops
B here crops
C wood crops
D oil crops
E spices
Which of the following factors may not cause over-crowding?
A Limited space
B Scarcity of food
C Reduced birth rate
D Lose immigration conditions
E Increased birth rate
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