NEET BIOLOGY EVOLUTION
Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The classical example of adaptive radiation during formation of new species is ..... [CPMT 2004]
Marsupials of Australia
All the above
Question 1 Explanation:
The classical example of adaptive radiation during formation of new species is marsupials of Australia, Darwin's finches and giant Tortoise.
Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Basic principles of embryonic development were proposed by:
Question 2 Explanation:
The basic principles of embryonic development were pronounced by Von Baer and he was the first president of the Russian Entomological Society, making him a distinguished Baltic German scientist. He was a naturalist, biologist, geologist, meteorologist, geographer, and a founding father of embryology.
Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The evolutionary scientist who stated that organisms evolved based on acquired characteristics from their environment.
The evolutionary scientist who stated that all living things have a common ancestor.
The evolutionary scientist who proposed the concept speciation.
The evolutionary scientist who explained why humans could have blue skin.
Question 3 Explanation:
Unlike Darwin, Lamarck believed that living things evolved in a continuously upward direction, from dead matter, through simple to more complex forms, toward human "perfection." Species didn't die out in extinctions, Lamarck claimed. Instead, they changed into other species.
Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following sequences shows the correct hierarchy of classification, going from broadest to most specific?
Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
Kingdom, Domain, Phylum, Order, Class, Family, Genus, Species
Domain, Phylum, Kingdom, Genus, Species, Family, Order, Class
Genus, Species, Kingdom, Phylum, Order, Class, Family, Domain
Question 4 Explanation:
The answer is B) Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.
Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Natural selection acts directly on ....., not ..... However phenotypes depend on genotypes, so natural selection may affect allele frequencies in gene pool
Question 5 Explanation:
The interactions between individuals and their environment is what determines whether their genetic information will be passed on or not. This is why natural selection acts on phenotypes instead of genotypes. A phenotype is an organism's physical traits, while a genotype is an organism's genetic makeup.
Question 6 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A mistake or change in the DNA is called a.....
Question 6 Explanation:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
Question 7 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which was not present freely in the early atmosphere of earth? ..... [AFMC 2008]
Question 7 Explanation:
Encyclopædia Britannica, Inc. Earth's original atmosphere was rich in methane, ammonia, water vapour, and the noble gas neon, but it lacked free oxygen.
Question 8 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Archaeopteryx is known as missing/connecting link because it is a fossil and has characters between ..... [CPMT 1991]
Fishes and amphibians
Birds and reptiles
Reptiles and mammals
Chordates and non chordates
Question 8 Explanation:
Archaeopteryx was first described as the 'missing link' between reptiles and birds in 1861 and then as a missing link between dinosaurs and birds.
Question 9 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If a trait that was inherited from the parents increases an organism's ability to survive and then reproduce, what is this trait?
an organisms fitness
Question 9 Explanation:
Adaptation. A trait that improves an organism's ability to survive and reproduce in an environment. Fitness. The ability of an organism to survive and reproduce.
Question 10 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
According to the concept of punctuated equilibrium,
natural selection is unimportant as a mechanism of evolution
given enough time, most existing species will gradually give rise to new species
a new species accumulates mos of its unique features as it comes into existence
evolution of new species features long periods during which changes are occurring, interspersed with short periods of equilibrium, or stasis
Question 10 Explanation:
Punctuated Equilibrium is a theory about how the evolutionary process works, based on patterns of first appearances and subsequent histories of species in the fossil record. When species-level homeostasis is working, species persist unchanged; when species-level homeostasis breaks down, speciation results.
Question 11 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This domain is characterized by ancient bacteria that can live in extreme environments, such as volcanoes.
Question 11 Explanation:
The Archaea are prokaryotes that inhabit extreme environments, such as inside of volcanoes, while Bacteria are more common organisms, such as E. coli.
Question 12 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Genetic mutations can be.....
beneficial, harmful, or neutral
Question 12 Explanation:
Mutation. A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
Question 13 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The phenomenon "Ontogeny repeats Phylogeny" is explained by:
Natural selection theory.
Question 13 Explanation:
The phenomenon ontogeny repeats phylogeny is explained by. a. Recapitulation theory. Hint: The theory of recapitulation is also called biogenetic law, and it is also called embryonic parallelism where it was expressed by a scientist Ernst Haeckel by a phrase called, “Ontogeny is replaced by the phylogeny”.
Question 14 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Evolution is .....
the process by which species change over time
responsible for similarities we see across all species
responsible for the great variety of things on Earth
all of the above
Question 14 Explanation:
Evolution refers to the cumulative changes in a population or species through time. "Survival of the fittest" is a popular term that refers to the process of natural selection, a mechanism that drives evolutionary change.
Question 15 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
One characteristic feature of tundra is that only the surface thaws in the summer and refreezes in the winter, leaving a layer of permanently frozen subsoil. This characteristic is known as
Question 16 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a well tested explanation that makes sense of a great variety of scientific facts and observations?
Question 16 Explanation:
A theory is a well-tested explanation that makes sense of a great variety of scientific observations.
Question 17 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How do adaptations help animals?
to hide from predators
to hunt for food
to survive in their habitats
All of these are correct
Question 17 Explanation:
Adaptation can protect animals from predators or from harsh weather. Many birds can hide in the tall grass and weeds and insects can change their colour to blend into the surroundings. This makes it difficult for predators to seek them out for food.
Question 18 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Over a period of years, the average rainfall in an area decreases, causing environmental changes. Which of the following populations would be most likely to survive these environmental changes?
a population with the greatest amount of genetic variation
a population with the last amount of genetic variation
a population that has been altered through artificial selection
a population with the smallest population size
Question 19 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The first organisms to colonise land were:
Question 19 Explanation:
Prokaryotes were probably the first organisms to colonize land, and this occurred as early as 2.6 billion years ago [1-3].
Question 20 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Small groups of persons leave the population and find new settlement with changed characteristics. It is called:
Question 20 Explanation:
The founder effect is a special case of genetic drift, occurring when a small group in a population splinters off from the original population and forms a new one.
There are 20 questions to complete.