Sarita Aggarwal solutions for बायोलॉजी [अंग्रेजी] कक्षा १२ आईएससी chapter 17 - Organisms and Populations [Latest edition]

The outward movement of members of a species is known as ______.

The natality is also known as ______.

The maximum capacity of an organism to reproduce or increase in number is termed as ______.

A stronger species like lion and deer being benefitted at the cost of another weak species is an example of ______.

The relationship of sea anemone and hermit crab is called ______.

The interaction of Rhizobium with root nodules of legume plants is called ______.

In commensalism, the relationship of species A and species B is such that ______.

Community is defined as aggregation of ______.

Parasite can be explained as an organism which depends on others ______.

Select the statement which explains best parasitism.

A group of individuals inhabiting a particular area form a ______.

A large regional, terrestrial unit characterised by a major vegetation type and associated fauna forms ______.

The short-term changes of the atmosphere at a given place and time form the ______.

The functional role of an organism in the ecological system is referred as ______.

A thin layer of ozone is present in ______.

In troposphere, the temperature ______.

Which of the following is photosynthetically active radiation?

The shallow water zone around the edge of the lake is called ______.

Another term for cold-blooded animals is ______.

During summer stratification, the upper layer of water is called ______.

Upper limit of water availability in the soil is also called ______.

The fresh leaves and recognisable litter are found in the following horizon of soil ______.

Genetically adapted local populations of a species (that have a wide range of distribution) are called ______.

Plants adapted to shade or low intensity are called ______.

Sunken stomata can be seen in ______.

Pneumatophores are special features of plants growing in ______.

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

______ refers to the increase in number of individuals by birth, hatching or germination.

The environmental check on population size is called ______.

The maximum number of individuals of a population that can be sustained in a given habitat represent its ______.

The aggregation of individuals of species is called ______.

The relationship where one organism is benefitted, while the other is neither benefitted nor harmed, is referred as ______.

Organisms preying on animals are called ______.

An association of two species in which both species are benefitted is called ______.

In competition one of the species is benefitted and the other one is ______.

In symbiosis if one species is benefitted the other one is ______.