Question 1 of 20 153 total questions
Which of the following is not promoted by high wind speed?
A Rill erosion
B Weathering of parent rock
C Breeding of plant
D Opening of stomata
Which of the following solutions is suitable for removing chlorophyll in a green leaf?
A Million’s reagent
B Methylated spirit
C Benedict solution
D Fehling’s solution
A-person who fails to detect the bitter taste of a substance swallowed, is more likely to have
A dead taste buds on the tongue
B avoided the substance from contacting the back of his/her tongue
C fewer taste buds on the tongue
D swallowed the substance without any water
The mineral needed for the formation of haemoglobin is
A magnesium
B iron
C phosphorus
D calcium
Loam is the best type of soil for crop production because
A it has a high percentage of clay which prevents leaching
B it has high humus content
C it is porous and has good water retention capacity
D gravels which obstruct implements are absent from it
Which of the following is not a micronutrient?
A Manganese
B Copper
C Potassium
D Zinc
Magnesium is needed by plants for
A protein synthesis
B formation of cell membrane
C activation of enzymes
D formation of chlorophyll
Turgidity in the cell of plant does not easily lead to bursting of the cell because the
A cell membrane can resist the turgidity
B large vacuole contained in the cell, can continuously take in water
C cellulose cell wall can resist the turgidity
D cytoplasm is jelly-like
Which of the following organisms is a chemo-autotroph?
A Virus
B Bacteria
C Paramecium
D Euglena
Which of the following is an evidence of photosynthesis?
A Absorption of light
B Formation of starch
C Availability of carbon dioxide
D Splitting of water molecules
In which of the following processes is light energy converted to ATP?
A Osmosis
B Transpiration
C Chemosynthesis
D Photosynthesis
Which of the groups of structures listed below contains chloroplast?
A I, II and III
B II, III and VII
C III, VIII and IX
D III, VIII and Xl
The pallisade cells are the structures labelled
Manufactured food is transported from the leaves through the structure
Carbon dioxide enters the leaf through the structure labelled
The spinneret found in the caterpillar of butterfly is used for
A protection against predators
B feeding on vegetation
C movement on twigs
D production of silk thread
Which of the following is an agent of pollination of grasses?
A Insects
B Water
C Wind
D Mammals
Which of the following vertebrates incubate their eggs?
A Mammals
B Birds
C Amphibians
D Reptiles
In mammals, fertilization usually occurs in the
A cervix
B vagina
C uterus
D oviduct
Which of the following statements about the maize grain is not correct?
A undergoes hypogeal germination
B is a fruit
C is non-endospermous
D has pericarp fused with the testa
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