NEET UG – Biology Base(Organisms & Populations)

Transition zone between two vegetational types is

The number of primary producers within a specified area would be minimum in

Which are the dense forests?

Which one of the following animals can live from birth to death without even drinking water?

Plants adapted to grow in shade are

The coexistence of two similar species in same ecosystem is possible until and unless they share the same

In which one of the following habitats does the diurnal temperature of soil surface vary most?

Whale is a warm-blooded animal, which lives in cold sea. Which part of its body helps in heat conservation?

Amazon rain forests are called

Which one of the following ecosystem has the highest primary productivity?

Which among the following biomes is characterized by great diversity of flora and fauna and high levels of precipitation?

Blubber occurs in

Competition for food, light and space is most severe in ………

All the living organisms and non-living factors of the Earth constitute

Athletes are often trained at high altitude because

Who is considered as father of ecology in India?

Which of the following is an example of a man-made ecosystem?

Terrestrial ecosystem having the highest primary productivity is

The term niche of a species refers to

In an aqueous environment microscopic animals and plants are collectively known as

The plants that grow on saline soils with high concentration of NaCl₂, MgSO₄ and MgCl₂ are called as

Which of the following are found in extreme saline conditions?

In general, which ecosystem has the greatest species biodiversity?

During extreme aridity, desert rat(Kangaroo rat)

Tropical rain forests are found in

The highest level of organization among the following is

Another term for ecosystem is

The sun loving plants are referred to as

Largest ecosystem of the world are

In India the tropical evergreen type of vegetation is found mostly in

The region consisting of long and severe winters and growing season consisting of few months of summers constitutes

Two different species can not live for long duration in the same niche or habitat. This law is

Plants such as Prosopis, Acacia and Capparis represent examples of tropical:

Deserts, grasslands, forests and tundra are the examples of

Which of the following is called as dynamic living entity?

The species though insignificant in number; determine the existence of many other species in a given ecosystem. Such species is known as

Functional aspect of a species with reference to its place of occurrence is

Boundary of territory in animals is marked by

Synecology refers to the ecological study of

Most of the desert plants bloom during night time because

Small plants which live for one or two season are called as

Savannahs are

Autumn colouration of leaves appear only in

Who proposed that ecosystem is symbol of structure and function of nature?

Term ecology was proposed by

According to Allen’s rule, mammals in cold regions have ……….. to conserve body heat.

Which one of the following is found in the equatorial region?

Which of the following act as ‘nature’s scavengers’?

Term ‘biosphere’ is used for the zone of Earth, where life exists

Adaptation to low temperature and freezing in animals occurs due to the production of

To keep a population balanced; the reproduction is a phenomenon, another opposite to keep it less is

The permanent decrease in population number occurs due to

A stable population is one which has got

The curve shown by human population is

Which of the following is described as the number of individuals in a population that the environment can just maintain with no net increase or decrease from generation to generation?

Which one has mainly controlled human population density?

Two opposite forces operate in growth and development of every population. One of them has ability to reproduces at a given rate. The opposing force is

The number of individuals of a species in a particular ecosystem at a given time remains constant due to

According to last census 2011, the sex ratio in comparison to the last decade (2001) has

Which of the following is the most significant features of the Indian population?

Insects constitute the largest animal group on earth. About 25-30% of the insect species are known to be herbivores. In spite of such huge herbivore pressure, globally, green plants have persisted. One possible reason for this persistence is

In commensalism

Theory of human population was proposed by

Microorganism found in a termite’s gut for cellulose digestion is best exemplified by

‘Sex ratio’ means

Who said that population would exceed the food resources?

Which one of the following is not observed in biodiversity hotspots?

Pitcher plant is

World population is increasing continuously due to

Struggle between cow and cow for getting grass is called

Different local population of a species is known as

Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example.

Mac Arthurs vision of five closely related species of warbles living on same tree were able to avoid competition and co-exist by behavioural difference. This is an example for

Rapid decline in population due to high mortality rate is

Biotic potential refers to

Starvation death decreases due to

Territoriality occurs as a result of

The main cause of the growth rate of the population is

Most successful parasites are those which do not

A density-dependent factor affecting population size is represented by all except

Categorisation of age groups for constituting population pyramids was done by

‘Parasitic castration’ refers to

Which of the following describes the worldwide human population?

When animals feed on other dead animals, which had died naturally or had been killed by another animal, the relationship is termed as

The apex of age pyramid of a stationary population is

All the populations of organisms living together and potentially interacting in an area form a

The quantitative and statistical study of human population is

Zero growth means

Which one of the following is an insectivorous plant?

Density of population increases when

What type of interaction takes place between two animals fighting over same food?

Which of the following best represents the human population, from stone age times to present?

Certain characteristics demographic features of developing countries are

A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is

In which of the following interactions, both partners are adversely affected?

Density-dependent population regulation results when

The population density can be calculated by

Which of the following helps to maintain species diversity in a community?

Viscum is

Which of the following is the correct representation of mutualism among species?