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NEET - Grade 12 - Biology - Principles of Inheritance and Variation - Introduction and Snapshot of Principles of inheritance and Variation - Study ref# 950

Introduction: Humans knew from as early as 8000-1000 B.C. that one of the causes of variation was hidden in sexual reproduction. They exploited the variations that were naturally present in the wild populations of plants and animals to... read more

NEET - Grade 12 - Biology - Organisms and Populations - Introduction and Snapshot of Organisms and Populations - Study ref# 974

Introduction: Our living world is fascinatingly diverse and amazingly complex. We can try to understand its complexity by investigating processes at various levels of biological organization- macromolecules, cells, tissues, organs, ind... read more

NEET - Grade 12 - Biology - Organisms and Populations - Introduction and Snapshot of Organisms and Populations - Study ref# 975

Following sections must be covered to understand the Organisms and Populations: 1. Organism and its Environment 2. Populations... read more

NEET - Grade 11 - Biology - The Living World - Importance and Snapshot of The Living World - Study ref# 737

Introduction: How wonderful is the living world! The wide range of living types is amazing. The extraordinary habitats in which we find living organisms, be it could mountains, deciduous forests, oceans , fresh water lakes, deserts or ... read more

NEET - Grade 12 - Biology - Organisms and Populations - Target Setup for Organisms and Populations - Study ref# 976

Student requires to achieve the following milestones to get better grip over Organisms and Populations. The milestones / targets are as follows: Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapt... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10376

Define Diapause. [R][CBSE SQP, 2018] Answer: Diapause is a stage of suspended development in zooplanktons species under unfavorable conditions. ... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10377

Mention how do bears escape from stressful time in winter? [R][Delhi set-I, Comptt.2013] Answer: Bears undergo hibernation to get rid of the stressful time in winter.... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10378

How do seed—bearing plants tide over dry and hot weather conditions? [U][Outside Delhi set-I, Comptt.2013] Answer: In higher plants, seeds and some other vegetative reproductive stru... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10379

How do snails escape from stressful time in summers? [U][Outside Delhi set-II, Comptt.2013] Answer: They undergo aestivation to avoid summer.... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10380

Why the plants that inhabits a desert are not found in a mangrove? Give reasons. [A][Delhi set-II, 2016] Answer: Desert plants are not to survive in saline/ aquatic conditions. Pla... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10381

Heat loss or heat gain depends upon the surface area of the organism’s body. Explain with the help of a suitable example. [U][Outside Delhi set-II, III, Comptt.2016] Answer: Small animal lik... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10382

Shark is eury-thermal while polar bear is stenothermal. What advantage does the former have advantage does the former have and what is the constraint the later has? [U][ Delhi set-I, Comptt.2015] Answer: Shark; t... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10383

How do mammals living in order regions and seals living in polar regions able to reduce the loss of their body heat? [U][Delhi set-III, Comptt.2015] Answer: Mammals from colder c... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10384

Many fresh water animals cannot survive in marine environment. Explain. [A][Delhi set-I, 2015] Answer: Fresh water animals are not able to maintain their osmotic concentratio... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10385

A moss plant is unable to complete its life cycle in a dry environment. State two reasons. [U][Outside Delhi set-II, 2015] Answer: Mosses cannot complete their life cycle in an environment because of the ... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10386

Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions? [R][ Delhi set-I,II, 2014, 2011] Answer: For survival during unfavorable conditions / fusion of gametes helps to pool the... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10387

Explain by taking three different examples how do certain organisms pull through the adverse conditions when unable to migrate under stressful period. [A][ Delhi set-I, II,III, Comptt.2016] Answer:... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10388

Why were the certain organism called regulators or conformers? Explain with the help of one example of each. [R][Outside Delhi set-I, II, Comptt.2016] Answer: Regulators maintain / regulate ... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10389

Different animals respond to changes in their surroundings in different ways. Taking one example each, explain “some animals undergo aestivation while some others hibernation”. How do fungi respond to adverse climatic conditions? ... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10390

Provide an instance where the population size of a species can be estimated indirectly, without actually counting them or seeing them. [A][ Delhi set-I,II,III, Comptt.2016] Answer:... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10391

State the type of interaction that exists between ticks and dogs. [R][Outside Delhi set-I, Comptt.2015] Answer: Ecto (Parasitism). [CBSE Marking... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10392

State Gause’s competitive exclusion principle. [R][Outside Delhi set-I, 2014] Answer: According to this principle, the two closely related species competing for the same... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10393

What is mutualism? Mention any two examples where the organisms involved are commercially exploited in agriculture. [R][Outside Delhi set-I, 2015] Answer: Interaction betwe... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10394

Pollinating species of wasps shows mutualism with specific fig plants. Mention the benefits the female wasps derive from the fig trees from such as interaction. [R][Outside Delhi Comptt.2011] Answer: The fema... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10395

In a pond there were 200 frogs. Calculate the birth rate of the population. [A][Delhi 2016] Answer: Birth rate=0.2 frogs/yr or 20%... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10396

Why are cattle and goats not seen browsing on Calotropis growing in the field? [R][Foreign 2011] Answer: Cattle and goats are not seen browsing on calotropis becau... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10397

Differentiate between commensalism and mutualism by taking von example each from plants only. [U][ Delhi set-I, II,III, 2014] Answer: Commensalism: In the interaction, one species is benefitted and the other species is... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10398

Describe the mutual relationship between fig tree and wasp and comment on the phenomenon that operates in their relationship. [U][Outside Delhi set-III, 2014] Answer: Wasp ... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10399

Why do clownfish and sea anemone pair up? What is this relationship called? [R][Outside Delhi set-III, 2012] Answer: Clown fish gets protection from its predators by moving... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10400

Koel is clever enough to lay eggs in a crow’s nest. Write the reason for the peculiar behavior. Name the type of interaction. [U][Outside Delhi set-II, Comptt.2015] Answer: So that the... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10401

Name and explain the type of interaction that exists in mycorrhizae and between cattle egret and cattle. [R][Outside Delhi set-I, 2016] Answer: Mycorrhiza is an association between fungi and the roots of higher plants. It is an ex... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10402

When do you describe the relationship between two organisms as mutualistic, competitive and parasitic? Give one example of each type. [A][Foreign 2017, set-I] A... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10403

Explain parasitism and co-evolution with the help of one example of each. [R][Outside Delhi set-III, 2016] Answer: Mode of interaction between two species in which one species (parasit... read more

NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10404

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NEET - Grade 12 - Biology - Organisms and Populations - Study ref# 10405

What is predation? Explain with the help of suitable examples why is it required in a community with rich biodiversity? [R][Outside Delhi set-II, Comptt.2015] Answer: Organism of high... read more