IGCSE O Level Biology Practice Test 91

Pollution: Pesticides and DDT Quiz PDF: Questions and Answers - 91

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The Quiz: In terms of tolerance range for oxygen (O₂), Tubifex worms and fish are; "Pollution: Pesticides & DDT" App Download (Android & iOS) Free with answers alike, differ, approximately same and opposite to learn e-learning courses. Practice effects of human activity on ecosystem questions and answers, Google eBook to download free sample for colleges that offer online degrees.

Pollution: Pesticides & DDT Questions and Answers PDF Download: Quiz 91

MCQ 451: In terms of tolerance range for oxygen (O₂), Tubifex worms and fish are

differ
alike
approximately same
opposite

MCQ 452: Disadvantages of pesticides includes

healthier crops
higher yield of crops
non-biodegradable pesticides
availability of more food

MCQ 453: Viruses are not considered cells because they

cannot divide
do not have a nucleus
do not have a protoplasm
are non-living things

MCQ 454: Ovary and ovules form the

fruit
non-endospermic seeds
provide food to growing cotyledons
shell of hard fruits

MCQ 455: In order to attract insects for pollination,

petals are brightly colored
petals are protected by calyx
epicalyx is essential
petals have large surface area

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