BIOLOGY TRIAL QUESTIONS 3
{For wassce Bece Novdec Nabptex whatsapp 0547316472}
{For wassce Bece Novdec Nabptex whatsapp 0547316472}
1(a) Defme the term osmosis. [3 marks]
(b) State two ways each in which osmosis is of importance to:
(i) plants;
(ii) animals. [4marks]
(c) A normal terrestrial plant was watered daily with a hypertonic solution for about seven (7) days.
It was discovered that the plant was not doing well. Explain why. [5 marks]
(d) (i)Explain briefly how marine organisms overcome the problem of high salinity in their environment?
(ii) List four examples of organisms found in the benthic zone of a marine habitat. [ 4 marks]
(b) State two ways each in which osmosis is of importance to:
(i) plants;
(ii) animals. [4marks]
(c) A normal terrestrial plant was watered daily with a hypertonic solution for about seven (7) days.
It was discovered that the plant was not doing well. Explain why. [5 marks]
(d) (i)Explain briefly how marine organisms overcome the problem of high salinity in their environment?
(ii) List four examples of organisms found in the benthic zone of a marine habitat. [ 4 marks]
2(a) Explain the following terms:
(i) test cross;
(ii) allele;
(iii) albinism;
(iv) Sex linkage [8 marks]
(b) A man with normal vision married a woman who is a carrier of colour blindness.
With the aid of genetic diagrams determine the likely status of their offspring. [6 marks]
(c) Outline hamarck's theory of evolution.
(i) test cross;
(ii) allele;
(iii) albinism;
(iv) Sex linkage [8 marks]
(b) A man with normal vision married a woman who is a carrier of colour blindness.
With the aid of genetic diagrams determine the likely status of their offspring. [6 marks]
(c) Outline hamarck's theory of evolution.
3(a)(i) What is sexual reproduction? [3 marks]
(ii) Name four organs in mammals that produce sex hormones [4 marks]
(iii) Name one sex hormone produced by each of the organs named in 2(a)(i) [4 marks]
(b) In a tabular form outline three differences between reproductions in lizards and birds.
[3 marks]
( c) (i) How are identical twins forms in humans? [3 marks]
(ii) State three characteristics features of identical twins.[3 marks]
(ii) Name four organs in mammals that produce sex hormones [4 marks]
(iii) Name one sex hormone produced by each of the organs named in 2(a)(i) [4 marks]
(b) In a tabular form outline three differences between reproductions in lizards and birds.
[3 marks]
( c) (i) How are identical twins forms in humans? [3 marks]
(ii) State three characteristics features of identical twins.[3 marks]
4(a) Write the chemical equation for each of the following processes:
(i) aerobic respiration;
(ii) anaerobic respiration in plants;
(iii)anaerobic respiration in animals.[6 marks]
(b)State four functions which the liver of a patient suffering from cancer of the liver will not be able to perform, (4 marks]
(c)Make a diagram 8 - 10 ern long of a flame cell and label fully.[6 marks]
(d)Name one of appropriate hormone each responsible for the following conditions in plants
(i) ripening of fruits;
(ii) breaking dormancy in seeds;
(iii) weed control;
(iv)leaf fall [4 marks]
(i) aerobic respiration;
(ii) anaerobic respiration in plants;
(iii)anaerobic respiration in animals.[6 marks]
(b)State four functions which the liver of a patient suffering from cancer of the liver will not be able to perform, (4 marks]
(c)Make a diagram 8 - 10 ern long of a flame cell and label fully.[6 marks]
(d)Name one of appropriate hormone each responsible for the following conditions in plants
(i) ripening of fruits;
(ii) breaking dormancy in seeds;
(iii) weed control;
(iv)leaf fall [4 marks]
{For wassce Bece Novdec Nabptex whatsapp 0547316472}