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
A class of 40 set out to determine the population of lizards in a bound field measuring 200 metres by 100 metres using the capture-recapture method.
In their first outing, the students captured a total of 360 lizards all of which were marked with indelible ink and then released back into the field.
After a one week interval the students went back into the field and caught a total of 250 lizards out of which 150 bore the indelible ink mark.
What is the estimated population of lizards in the field?
- A. 100
- B. 300
- C. 400
- D. 560
- E. 600
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
In genetics, test cross is used to
- A. confirm the number of offspring in F1
- B. confirm the number of gametes present in parents
- C. test for heterozygosity
- D. test for X and Y chromosomes
- E. test for the phenotypic ratio