Question 1 of 20 103 total questions
Which of the following diseases can be contracted in areas with fast flowing rivers?
A Schistosomiasis
B Elephantiasis
C Syphilis
D Onchoceriasis
One of the characteristics of plants in the savanna is the
A possession of thin, smoth barks
B possession of large tap root
C production of seedlings on mother plant
D possession of thick, flaky bark
Which of these groups of animals is likely to be found in fresh water?
A Blood worm, pond skater and scorpion
B Blood worm, pond skater and dragonfly larva
C pond skater, scropion and dragonfly larva
D Pond skater, blood worm and ant-lion
Which of the following has the greatest influence on the distribution of animals in marine and fresh water habitats?
A pH
B Salinity
C Water current
D Turbidity
Which of the following relationship involves only one organism?
A Saprophytism
B commensalism
C Parasitism
D Symbiosis
IF an organism obtains its food by means of haustoria, it is said to be
A holophytic
B heterophytic
C saprophytism
D parasitic
The most important substance necessary for the maintenance of life are carbon , oxygen
A hydrogen, soil and enzymes
B hydrogen, salt and water
C nitrogen, salt and soil
D nitrogen, salt and water
The turbidity of a pond can be measured using the
A anaemometer
B secchi disc
C theodolite
D hydrometer
A red-coloured flower when crossed with a white-coloured one produced pink flowers. This is an example of?
A complete dominance
B blending inheritance
C interaction of genes
D back crossing
If a dark-skinned woman (Bb) marries an albino man (bb) and they have four children, how many of the children will be dark-skinned?
What part of the central nervous system is concerned with answering an examination question
A Cerebrum
B Cerebellum
C Medulla oblongata
D Spinal cord
The main function of the choroid is
A protection of the eye ball
B transmission of light
C supply of nutrient to tissue of the eye
D converging light
The radicle of a bean seedling grows most rapidly in the region
A of the root tip
B just above the root tip
C just around the root tip
D just below the root tip
In a mammal, the placenta performs functions similar to those to the
A lungs kidneys and digestive system
B lungs, heart and nervous system
C liver, intestines and reproductive system
D intestine, heart and digestive system
Which of these plants groups are normally propagated by asexual means?
A Banana, yam, pineapple and cassava
B Yam, cassava, rubber and banana
C Yam, cassava, orange and banana
D Banana, cashew, coffee and pineapple
In vegetation propagation, which of the following requires part of another plant to develop?
A Scion
B Bulb
C Rhizome
D Sucker
Airspace are characteristic of seeds of fruits dispersed by
A birds
B water
C wind
D explosive mechanism
A dry dehiscent fruit which breaks up into one-seeded part is a
A schizocarp
B capsule
C follicle
D legume
Taxism differs from tropism because
A the whole organism is affected
B it is a directional movement
C it is a response to multi directional stimuli
D part of the organism is affected
Parenchyma cells are serves as supporting tissue when they
A contain chloroplast
B have crystals
C become flaccid
D become turgid
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