CIE Biology Paper-4: Specimen Questions 64 - 65 of 120

Question number: 64

Essay Question▾

Describe in Detail

Write five differences between eutrophication and bio magnification processes.

Explanation

Table shows difference between eutrophication and Bio magnification

Table shows difference between eutrophication and Bio magnification process occur in ecosystem

Eutrophication

Bio magnification

It is the enrichment of nutrient in water resources

It is the entry of increase in concentration of no biodegradable compounds in the food chain

It is present only in aquatic ecosystem

It is present in all type of ecosystem

It leads to organic loading

It does not result in organic loading

It leads to death of many plants and animals

It leads to toxicity in higher or top consumers

Bloom production occur

Bloom production occur not occur

Question number: 65

Essay Question▾

Describe in Detail

What is the difference between monogenic inheritance and polygenic inheritance?

Explanation

Table shows difference between monogenic inheritance and polygenic inheritance

Table shows difference between monogenic inheritance and polygenic inheritance

Monogenic inheritance

Polygenic inheritance

Produce discontinuous variations

Produce continuous variations

A single dominant allele express the complete trait

A single dominant allele express the one unit of trait

It controls qualitative traits

It controls quantitative traits

A character is represented in an individual by a pair of alleles

A character is represented by 3 to many pairs of alleles

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