EVOLUTION
SOURCES OF VARIATION IN A POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There is an increase in the population of nocturnal pollinators
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There is a decrease in the strength of solar radiation.
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There is an increase in herbivores that forage at night.
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There is a decrease in water for root absorption.
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Detailed explanation-1: -The researchers demonstrated that the pale moths are safer from predators when there is less pollution, while darker moths have a better chance of survival when the air is more polluted.
Detailed explanation-2: -These adaptations are: ∙Leaves are modified into spines to minimize the loss of water through transpiration. ∙The stem has a thick cuticle and huge water holding capacity. The thick cuticle helps in reducing transpiration.
Detailed explanation-3: -Desert plants are adapted to their arid environment in many ways. Small leaves on desert plants help reduce moisture loss during photosynthesis. Small leaves mean less evaporative surface per leaf. In addition, a small leaf in the sun doesn’t reach as high a temperature as a large leaf.
Detailed explanation-4: -Desert plants have developed three main adaptive strategies: succulence, drought tolerance and drought avoidance. Each of these is a different but effective suite of adaptations for prospering under conditions that would kill plants from other regions.