Protobionts having polysaccharide, protein and ${{\rm{H}}_2}{\rm{O}}$

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NEET • BIOLOGY • EVOLUTION

Evolution practice · Mixed difficulty

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Showing 211-240 of 348 questions

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211 Easy

211 of 348

Remembering +4 | -1

Select the correct statement for Homo erectus

View answer and explanation

Correct option: D

First man to use fire

Option D is correct because Homo erectus is known to be the first human ancestor to use fire.

212 Easy

212 of 348

Remembering +4 | -1

Coacervates are

View answer and explanation

Correct option: A

Protobionts having polysaccharide, protein and

{\mathrm{H}_2}\mathrm{O}

Option A is correct because coacervates are protobionts composed of polysaccharides, proteins, and water, representing a step towards the origin of life.

213 Easy

213 of 348

Analyzing +4 | -1

Which of the following phenomenon is difficult to explain in terms of natural selection?

View answer and explanation

Correct option: A

Male peacocks evolve tail and feathers that makes them more vulnerable to predators

Option A (Male peacocks evolve tail and feathers that makes them more vulnerable to predators) is correct because it seems counterintuitive to natural selection, which typically favors traits that increase survival and reproduction.

214 Hard

214 of 348

Understanding +4 | -1

Reproductive isolation in sympatric speciation develops without a

View answer and explanation

Correct option: A

geographic barrier

Option A (geographic barrier) is correct because sympatric speciation occurs within the same geographic area, without a physical barrier.

215 Easy

215 of 348

Remembering +4 | -1

Which of the set represents vestigial organs?

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Correct option: D

Vermiform appendix, ear muscles and coccyx

Option D (Vermiform appendix, ear muscles and coccyx) is correct because these structures are reduced or non-functional in humans, representing vestigial organs.

216 Hard

216 of 348

Understanding +4 | -1

Select the correct group/set of Australian Marsupials exhibiting adaptive radiation.

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Correct option: D

Numbat, Spotted cuscus, Flying phalanger

Option D (Numbat, Spotted cuscus, Flying phalanger) is correct because these are all Australian marsupials that have diversified into different ecological niches.

217 Medium

217 of 348

Analyzing +4 | -1

Reproductive isolation is to speciation as selection is to:

View answer and explanation

Correct option: A

Adaptive evolution

Option A (Adaptive evolution) is correct because reproductive isolation leads to the formation of new species, and selection drives adaptive changes within populations.

218 Easy

218 of 348

Understanding +4 | -1

Which of the following provides most evident proof of evolution?

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Correct option: A

Fossils

Option A (Fossils) is correct because fossils provide direct evidence of past life forms and their evolutionary changes over time.

219 Medium

219 of 348

Remembering +4 | -1

The force responsible for fixing in population of neutral characteristics is

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Correct option: A

Genetic drift

Option A is correct because genetic drift is the random process that can fix neutral characteristics in a population.

220 Medium

220 of 348

Understanding +4 | -1

Arrange the following events of modern concept of evolution sequentially: I. Genetic variations in population, II. Natural selection, III. Heredity IV. Isolation ,V. Speciation.  The correct option is

View answer and explanation

Correct option: C

I, IV, III, II, V

Option B (I, III, II, IV, V) is the correct sequence of events in the modern concept of evolution, starting with genetic variations and ending with speciation.

221 Easy

221 of 348

Analyzing +4 | -1

Assertion: Herbicide resistant varieties can be selected in lesser time scale.

Reason: It can be possible by anthropogenic action that is excessive use of herbicides.

View answer and explanation

Correct option: A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

Option A is correct. The assertion and reason are both true, and the excessive use of herbicides (anthropogenic action) directly leads to the selection of herbicide-resistant varieties in a shorter time frame.

222 Easy

222 of 348

Understanding +4 | -1

In the animals, the same structures developed along the different directions due to the adaptations to different needs. This is called

View answer and explanation

Correct option: B

Divergent evolution

Option B (Divergent evolution) is correct because divergent evolution describes the process where similar structures in related organisms evolve to have different functions due to adaptation to different environments.

223 Hard

223 of 348

Understanding +4 | -1

Statement-I: The first formed earth originally had reducing atmosphere.

Statement-II: Hydrogen was abundant and there was no free

{O}_2

View answer and explanation

Correct option: A

Both statement I & II are correct

Option A (Both statement I & II are correct) is correct because the early Earth's atmosphere was indeed reducing, with abundant hydrogen and little to no free oxygen.

224 Easy

224 of 348

Remembering +4 | -1

Connecting link between Annelida and Mollusca is

View answer and explanation

Correct option: C

Neopilina

Option C is correct because Neopilina is considered a connecting link between Annelida and Mollusca, exhibiting characteristics of both phyla.

225 Medium

225 of 348

Understanding +4 | -1

Resistant varieties evolved in much lesser time because of

View answer and explanation

Correct option: C

Anthropogenic (human) activities

Option C (Anthropogenic (human) activities) is correct because the rapid evolution of resistant varieties is primarily driven by human actions, such as the use of pesticides or antibiotics.

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226 Easy

226 of 348

Understanding +4 | -1

According to the Darwin’s theory of evolution, differences between the species occurs due to

View answer and explanation

Correct option: C

Natural selection

Option C (Natural selection) is correct because Darwin's theory emphasizes that differences between species arise primarily through natural selection.

227 Easy

227 of 348

Remembering +4 | -1

Origin of life as a result of chemical evolution has been properly explained by or the most logical biochemical theory of origin of life has been given by

View answer and explanation

Correct option: C

A I Oparin

Option C (A I Oparin) is correct because A.I. Oparin is known for his pioneering work on the origin of life, proposing the theory of chemical evolution and the formation of coacervates.

228 Medium

228 of 348

Understanding +4 | -1

Darwin proposed that new species evolve from ancestral forms by the

View answer and explanation

Correct option: A

Gradual accumulation of adaptations to changing environment

Option A (Gradual accumulation of adaptations to changing environment) is correct because Darwin's theory of natural selection emphasizes the slow accumulation of beneficial adaptations.

229 Hard

229 of 348

Understanding +4 | -1

[A]: Mesozoic era is known as the 'Age of Reptiles'.
[R]: It was the era of origin, differentiation and final extinction of dinosaurs which thrived in sea, in air and on land.

View answer and explanation

Correct option: A

Both A and R are true and R is the correct explanation of A

Option A is correct because the Mesozoic era is indeed known as the \'Age of Reptiles,\' and the reason provided accurately describes the dominance and diversification of dinosaurs during that time.

230 Hard

230 of 348

Understanding +4 | -1

Biomagnification of DDT

View answer and explanation

Correct option: A

Disturbs calcium metabolism in birds

Option A (Disturbs calcium metabolism in birds) is correct because DDT accumulation interferes with calcium deposition, leading to thin eggshells.

231 Medium

231 of 348

Analyzing +4 | -1

Which of the following is incorrect statement w.r.t evolutionary history of vertebrates?

View answer and explanation

Correct option: C

Snakes are evolved with turtles in Jurassic period

Option C is correct because snakes evolved much later than the Jurassic period and are not directly related to the evolution of turtles.

232 Medium

232 of 348

Remembering +4 | -1

The extinct hominid who lived in near-east and central Asia between 1,00,000 – 40,000 years back and used hides to protect their body, were

View answer and explanation

Correct option: D

Neanderthal man

Option D (Neanderthal man) is correct because Neanderthals lived in the Near East and Central Asia during the specified period and used hides for protection.

233 Medium

233 of 348

Remembering +4 | -1

Life appeared ________ years after the formation of earth

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Correct option: C

500 million

Option C (500 million) is correct because life appeared approximately 500 million years after the formation of the earth.

234 Medium

234 of 348

Remembering +4 | -1

Which of the following animal had extinct recently?

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Correct option: C

Mammoth

Option C (Mammoth) is correct because mammoths went extinct relatively recently compared to the other options.

235 Medium

235 of 348

Understanding +4 | -1

Coacervates do not full the requirement for probable precursors of life. One of the most appropriate reasons for this is

View answer and explanation

Correct option: A

They do not have lipid outer membrane

Option A (They do not have lipid outer membrane) is correct because a lipid membrane is crucial for compartmentalization and maintaining a stable internal environment, essential for protocells.

236 Easy

236 of 348

Remembering +4 | -1

Darwin’s finches represents

View answer and explanation

Correct option: B

Geographical isolation

Option B is correct because Darwin's finches are a classic example of adaptive radiation driven by geographical isolation.

237 Easy

237 of 348

Understanding +4 | -1

How Australopithecus skull differs from the skull of modern man?

View answer and explanation

Correct option: D

All of the above

Option D (All of the above) is correct because the Australopithecus skull differs from the modern human skull in age, shape, and size.

238 Hard

238 of 348

Understanding +4 | -1

Assertion (A): Resistant organisms/cells are appearing in a time scale of months or year and not centuries.

Reason (R): Rate of evolution due to anthropogenic action is more faster than nature.

choose the correct answer from the options given below:

View answer and explanation

Correct option: D

Both (A) and (R) are correct and (R) is the correct explanation of (A)

Option D (Both (A) and (R) are correct and (R) is the correct explanation of (A)) is correct because the rapid appearance of resistant organisms is due to the faster rate of evolution caused by human actions.

239 Hard

239 of 348

Application +4 | -1

According to Hardy-Weinberg's law, if the frequency of non-tasters of PTC paper in a population, is

16 \%

, then find out the frequency of dominant allele. Also calculate the percentage of heterozygous individuals in the population.

View answer and explanation

Correct option: D

Frequency of dominant allele 0.6, % of heterozygous individuals

48 \%

Option D (Frequency of dominant allele 0.6, % of heterozygous individuals

48 \%

) is correct because it is calculated using the Hardy-Weinberg equation, where q² is 0.16, q is 0.4, p is 0.6, and 2pq is 0.48.

240 Hard

240 of 348

Remembering +4 | -1

Pasteur and Koch are related to

View answer and explanation

Correct option: C

Germ theory of disease

Option C (Germ theory of disease) is correct because Pasteur and Koch are famous for their contributions to the germ theory of disease.

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Review EVOLUTION in your textbook or class notes, then use this set to check your understanding.

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