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Biology Past Questions and Answers

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Biology Questions

Question 4516:

Which of these is NOT a method of improving crop yield?

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A Spraying the crops with chemicals
B Mechanized farming
C Sowing pest resistant varieties of seeds
D Storing the crops in barns or silos
E Sowing of viable seeds

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Question 4517:

Simple sugars are also called ____________

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A Cellulose
B Disaccharides
C Monosaccharides
D Polysacchaiides
E Starch

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Question 4518:

Plants that are found in extreme dry conditions are called ____________

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A Epiphytes
B Hydrophytes
C Mesophytes
D Thallophytes
E Xerophytes

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Question 4519:

Which of the following is NOT a characteristic of digestive enzymes?

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A Changes in pH affect enzymes
B Enzymes react best at high temperature
C Enzymes react reversibly
D They are affected by intake of poisons
E They are protein in nature

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Question 4520:

Which of the following is released from car exhaust due to incomplete combustion of fuel?

SchoolNGR Classroom

A Carbon dioxide
B Carbon monoxide
C Nitrogen dioxide
D Oxygen
E Sulphur dioxide

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