Which of the following factors affect population?
A. competition and natality rate B. heat and space C. food and mortality rate D. Space and competition E. Water and light Correct Answer: Option E – Water and light
When a plant shows reddish leaves; the soil is deficient in?
A. calcium B. iron C. nitrogen D. phosphorus E. sulphur Correct Answer: Option D – phosphorus
Which practice does NOT promote the health of the community?
A. burning of refuse in incinerators B. disposal of human sewage using water closets C. legislating in favour of sexual indulgence D. provision of portable pipe-borne water E. sitting of industries downstream away from habitations Correct Answer: Option C –...
Which of the following is NOT a family planning method?
A. abstinence B. contraceptive device C. masturbation D. sterilization E. use of condoms Correct Answer: Option C – masturbation
The excretory organ of earthworms is known as?
A. contractile vacuole B. flame cell C. malphigian tubule D. nephridium E. kidney Correct Answer: Option D – nephridiumProducts
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