The rate of decomposition of dead organisms is faster in the tropical rainforest than in other biomes because
- A. of consistent cool temperature
- B. of availability of moisture
- C. of the relatively constant day light.
- D. there are more plants
Which of the following hormones is wrongly paired with its secretory organ?
- A. oestrogen and ovary
- B. Oxytocin and hypothalamus
- C. adrenalin and kidney
- D. insulin and pancreas
A Rhesus negative woman may experience stillbirth of the second child that is Rhesus positive because
- A. the foetus is deprived of nourishment
- B. they have poor circulatory system
- C. the blood of the foetus might clump
- D. the woman is susceptible to diseases during pregnancy
Which of the following factors is the main problem facing xerophytes?
- A. Conservation of excess water
- B. competition for sunlight
- C. lack of adequate water
- D. formation of poor roots
Which of the following instruments is not used in measuring abiotic factors in a habitat?
- A. microscope
- B. Wind vane
- C. thermometer
- D. hygrometer
A vestigial structure in humans is
- A. earlobe
- B. gallbladder
- C. tailbone
- D. villus
What is the probability that a pregnancy would result in a male child?
- A. \(\frac{3}{4}\)
- B. \(\frac{1}{2}\)
- C. 1
- D. \(\frac{1}{4}\)
The mouthparts of a grasshopper are adapted for
- A. sucking
- B. chewing
- C. grinding
- D. absorption
A group of organisms belonging to different species that coexist in the same habitat and interact is referred to as
- A. community
- B. biosphere
- C. niche
- D. population
The diagram below is an illustration of a mango leaf drawn by a student in a Biology test. The student failed the test. Study it and answer the question.
which features of the diagram would have earned the student more marks if shown
- A. colour and size
- B. spelling of label and length of midrib
- C. habitat and agricultural qualities of leaf
- D. title and margin
The diagram above is an illustration of a mango leaf drawn by a student in a Biology test. The student failed the test. Study it and answer the question.
The likely reason why the student failed the test was that the
- A. labels were wrong and the guidelines were not touching the structures
- B. net venation shown were few, rough, not properly drawn and wrongly placed
- C. leaf venation should have been parallel and the midrib should be thicker
- D. leaf was too tapered at the apex, the leaf stalk was too short and the shape of leaf was wrong.
The structure that its action could result in choking when talking and eating at the same time is
- A. oesophagus
- B. epiglottis
- C. oesophagus
- D. liver
Growth in animals differs from that in plants because growth in
- A. plants is indefinite
- B. plants is intercalary
- C. animals is apical
- D. plants is from within
The diagrams above are illustrations of forms in which a particular group of organisms exist. Study them and answer the question.
in which of the illustrated forms does the organism that causes cholera exist?
- A. III
- B. II
- C. IV
- D. V
The diagrams above are illustrations of forms in which a particular group of organisms exist. Study them and answer the question.
Which group of organisms is illustrated?
- A. protozoa
- B. viruses
- C. fungi
- D. bacteria
The food substance that would produce the highest amount of energy is
- A. protein
- B. amino acid
- C. fat
- D. glucose
Which of the following activities is against the conservation of natural resources?
- A. Contour ploughing
- B. establishment of game reserves
- C. deforestation
- D. afforestation
Organisms that feed on dead, decaying tissues of other organisms are known as
- A. saprophytes
- B. autotrophs
- C. parasites
- D. heterotrophs
The ability of organisms to maintain a constant internal environment is known as
- A. diuresis
- B. plasmolysis
- C. endosmosis
- D. homeostasis
The type of nutrition in which organisms take solid organic materials into their body is
- A. parasitic
- B. holozoic
- C. saprophytic
- D. symbiotic
Which of the following structures in the ear is responsible for transmitting sound vibrations to the auditory nerve?
- A. Eardrum
- B. Ossicles
- C. Cochlea
- D. Auditory canal