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ماحولیات
6 سوالات: ایم ڈی کیٹ حیاتیات، جوابات اور وضاحت کے ساتھ۔
جوابی کنجی کے ساتھ قابلِ پرنٹ ورک شیٹ
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Primary succession begins on:
- 1 Bare rock with no soil
- 2 An abandoned field
- 3 A forest after a fire
- 4 Fertile farm soil
جواب دیکھیں
درست جواب: Bare rock with no soil
Primary succession starts where no soil exists, for example on bare rock, and pioneer species such as lichens come first.
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Which process returns nitrogen from the soil to the atmosphere?
- 1 Denitrification
- 2 Nitrogen fixation
- 3 Nitrification
- 4 Ammonification
جواب دیکھیں
درست جواب: Denitrification
Denitrifying bacteria convert nitrates into nitrogen gas.
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A relationship in which both organisms benefit is called:
- 1 Predation
- 2 Parasitism
- 3 Mutualism
- 4 Competition
جواب دیکھیں
درست جواب: Mutualism
In mutualism, both partners gain, as with a legume and its root nodule bacteria.
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Which biome has permanently frozen soil called permafrost?
- 1 Tundra
- 2 Desert
- 3 Savanna
- 4 Tropical rainforest
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A population with unlimited resources grows with a:
- 1 Sigmoid curve
- 2 Flat line
- 3 Falling curve
- 4 J-shaped (exponential) curve
جواب دیکھیں
درست جواب: J-shaped (exponential) curve
Without limits, a population grows exponentially, giving a J-shaped curve.
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Which group of chemicals is mainly responsible for damaging the ozone layer?
- 1 Chlorofluorocarbons (CFCs)
- 2 Carbon dioxide
- 3 Nitrogen
- 4 Methane
جواب دیکھیں
درست جواب: Chlorofluorocarbons (CFCs)
CFCs release chlorine atoms in the stratosphere, and these break down ozone.