Biology
General
Easy
Question
How might an evolutionary biologist explains why a species of birds has evolved a larger beak size?
- Large beak size occurred as a result of mutation in each member of the population
- The ancestors of this bird species encountered a tree with larger than the average sized seeds. They needed to develop larger beaks in order to eat the larger seeds and over time, they adapted to meet this need
- Some members of the ancestral population had larger beaks than others. If larger beak size was advantageous, they would be more likely to survive and reproduce. As such, large beaked birds increased in frequency relative to small beaked birds
- There is no way to explain such phenomenon in evolutionary terms
The correct answer is: Some members of the ancestral population had larger beaks than others. If larger beak size was advantageous, they would be more likely to survive and reproduce. As such, large beaked birds increased in frequency relative to small beaked birds
Some members of birds had large beak. As there was natural selection, the large beaked bird increased their frequency due to their advantages over other. That’s why their number is more than the other small beaked bird
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Which of the following is an atavistic character?
I. Body hairs
II. Enlarged canines
III. Presence of six fingers
IV. Presence of tail in some babies
The correct combination is
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I. Body hairs
II. Enlarged canines
III. Presence of six fingers
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The correct combination is
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True statements regarding the genetic drift are
I. It mostly occurs in smaller population
II. Certain alleles can be lost forever because of genetic drift
III. Founder effects and bottle neck effects are caused by genetic drift
IV. Mutations are primarly responsible for genetic drift
The correct combination showing true statement is
True statements regarding the genetic drift are
I. It mostly occurs in smaller population
II. Certain alleles can be lost forever because of genetic drift
III. Founder effects and bottle neck effects are caused by genetic drift
IV. Mutations are primarly responsible for genetic drift
The correct combination showing true statement is
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The animal called evolved into the first amphibians that lived on both land and water.
Complete the given statement by choosing an appropriate option
The animal called evolved into the first amphibians that lived on both land and water.
Complete the given statement by choosing an appropriate option
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Darwin’s finches are a good example of
Darwin’s finches are a good example of
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is also called as
is also called as
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Which era is called the age of angiosperms?
Which era is called the age of angiosperms?
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Which of the following features are connected with the modern theory of evolution?
I. Genetic and chromosomal mutation
II. Genetic recombination and natural selection
III. Reproductive isolation
The correct combination is
Which of the following features are connected with the modern theory of evolution?
I. Genetic and chromosomal mutation
II. Genetic recombination and natural selection
III. Reproductive isolation
The correct combination is
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Which of the following is not a concept of Lamarck?
Which of the following is not a concept of Lamarck?
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Which of the following was formed in S Miller’s experiment?
Which of the following was formed in S Miller’s experiment?
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Which of the following statements are incorrect?
I. Microbial experiment shows that when the pre-existing advantagoeus mutations are selected they will result in the observation of new phenotypes. Over few generations, this would results in speciation
II. Neanderthal fossils represents a human relative.
III. In 1938, a fish caught in South Africa happened to be a coelacanth (lobe fins) which was thought to be extinct. These animals evolved into the first living amphibian on both land and water
IV. Lichens can be used as water pollution indicators
V. Alfred Wallace, a naturalist, who worked in Malay Archepalago (present Indonesi(a) had also came to the similar conclusion on natural selection as reached by Darwinism
The correct option is
Which of the following statements are incorrect?
I. Microbial experiment shows that when the pre-existing advantagoeus mutations are selected they will result in the observation of new phenotypes. Over few generations, this would results in speciation
II. Neanderthal fossils represents a human relative.
III. In 1938, a fish caught in South Africa happened to be a coelacanth (lobe fins) which was thought to be extinct. These animals evolved into the first living amphibian on both land and water
IV. Lichens can be used as water pollution indicators
V. Alfred Wallace, a naturalist, who worked in Malay Archepalago (present Indonesi(a) had also came to the similar conclusion on natural selection as reached by Darwinism
The correct option is
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The study of the homologous structures in mature organisms provides the evidence for the evolutionary relationships among certain groups of organisms. Which field of the study includes this evidence of evolution?
The study of the homologous structures in mature organisms provides the evidence for the evolutionary relationships among certain groups of organisms. Which field of the study includes this evidence of evolution?
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Organic compounds first evolved in earth required for origin of life were
Organic compounds first evolved in earth required for origin of life were
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First seed plant appeared during which period?
First seed plant appeared during which period?
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Which one is linked to evolution?
Which one is linked to evolution?
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Anthropogenic actions that leads to evolution is the use of
Anthropogenic actions that leads to evolution is the use of
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