Question 1 of 20 351 total questions
The result of placing a plant cell in a hypertonic solution for a long time is ________of the cell.
A crenation
B flaccidity
C haemolysis
D turgidity
E vasodilation
Bacteria which derive energy for food synthesis by oxidizing certain inorganic compounds are said to be
A chemosynthetic
B heterotrophic
C parasitic
D photosynthetic
E saprophylic
An example of a disease linked to the sex-chromosome is
A colour blindness
B gonorrhea
C night blindness
D syphilis
E tuberculosis
Which excretory product is NOT found in mammals?
A ammonia
B carbon dioxide
C mineral salts
D urea
E water
An inflorescence is a
A group of flowers borne on the same stalk
B group of flowers born on different stalks
C flower pollinated by wind
D many flowers on the same plant
E plants which have both male and female reproductive organs
Which process will NOT release carbon dioxide into the atmosphere?
A Burning
B exhalation
C photosynthesis
D putrefaction
E respiration
Which part of Euglena performs a similar function to that of the oral groove in paramecium?
A contractile vacuole
B ectoplasm
C endoplasm
D gullet
E nucleus
Use the data to answer this question
The remains impressions of animals and plants preserved in rocks are referred to as
A crusts
B fossils
C honeycomb
D plaques
E residues
Thick succulent stems and leaves are an adaptation for conservation of water
A prevention of heat stroke
B protection
C reproduction
D sun tanning
Which process best explains the raising upward and outward of the ribs during breathing?
A aerobic respiration
B anaerobic respiration
C exhalation
D inhalation
E internal respiration
The pro-condition for transfusion of blood to an accident victim is
A assess the level of blood lost
B boil the blood before transfusion
C cross-match the victims and donor blood groups
D mix the blood to be donated with sulphur
E remove the remaining blood from the accident victim before transfusing the blood
Which is NOT an example of bacteria?
A bacilli
B cocci
C diplococci
D spirilli
E sporangia
Which organism is a primary producer?
A Cassava
B cricket
C grasshopper
D hawk
E lizard
The incomplete breakdown of glucose into alcohol, carbon dioxide and energy is referred to as
A decay
B digestion
C fermentation
D oxidation
E respiration
Which reagent is used to test for the presence of starch in a food substance?
A anhydrous copper (II) sulphate
B Fehling’s solution
C iodine solution
D iron(III) oxide
E Million’s reagent
Iron is mainly required by plants for_________formation.
A Chlorophyll
B glucose
C protein
D nuclear
E nucleproteins
A group of interacting populations in a particular habitat can be described as
A biome
B biosphere
C community
D ecosystem
E environment
Which division is NOT part of the atmosphere?
A hydrosphere
B mesosphere
C stratosphere
D thermosphere
E troposphere
What is NOT characteristic of fresh water habitats?
A high osmotic concentration
B low oxygen concentration
C they are flooded during the rainy season
D temperature changes daily
E they have limited size-and depth
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