AIIMS Botany Biodiversity And Conservation Class 12 Questions

124. Match the column I and II

Select the correct match (I) (II) (III) (a) + (i) – (P) Amensalism (b) – (ii) – (Q) Commensalism (c) – (iii) 0 (R) Predation (d) + (iv) 0 (S) Competition

Match the following:

Match the correct column

Assertion: Fig and wasp cannot complete their life cycle without each other. Reason: It is mutualistic relationship.

Assertion: In commensalism, one organism is benefitted and other is unaffected Reason: Cattle egret bird and cattle is an example of commensalism

Assertion : During the process of photosynthesis amount of organic matter synthesized by producers per unit time and per unit area is referred to as net primary productivity. Reason : Due to abundance of sunlight primary productivity is usually high and sustained throughout the year in temperate areas.

10% law of energy transfer was given by

Select the correct labelling of above diagram

Question : Full form of GFC is :

Question : Biomagnification refers to :

Match the Column-I and Column-II

Fishes in a eutrophic lake die due to

Match the column:<br><table class=\"operon-table\"><thead><tr><th></th><th>a</th><th>b</th><th>c</th></tr></thead><tbody><tr><td>(i)</td><td>+</td><td>+</td><td>(1) Commensalism</td></tr><tr><td>(ii)</td><td>+</td><td>-</td><td>(2) Competition</td></tr><tr><td>(iii)</td><td>-</td><td>-</td><td>(3) Parasitism</td></tr><tr><td>(iv)</td><td>+</td><td>0</td><td>(4) Mutualism</td></tr></tbody></table>

Lichens are best indicator of –

Select the correct statement about biodiversity.

Assertion (A) Genecology is the study of genetic compositions and changes in relation to the origin of ecades, ecotypes, new sps., etc. Reason (R) Autecology deals with the study of a group of organisms.

Assertion: Chaparral is also called "shrub forest". Reason: Trees are totally absent in chaparral.

Each of these questions contains two statements. Assertion (A) and Reason (R). Each of these questions also has four alternative choices, only one of which is the correct answer. You have to select one of the codes (a), (b), (c) and (d) given below. Assertion (A) A network of food chains existing together in an ecosystem is known as food web. Reason (R) An animal like kite cannot be apart of food web.

Assertion: Red data book has a record of only those animals which are known to be in danger. Reason: Endangered species no need to be noticed.

Read the Assertion and Reason carefully to mark the correct option from those given below. Assertion: Gene bank is a type of ex-situ conservation of biodiversity. Reason: It involves maintaining stocks of viable seeds, living growing plants, tissue culture, etc.

Select the correct statement about biodiversity.

Assertion (A) Genecology is the study of genetic compositions and changes is relation to the origin of ecades, ecotypes, new sps., etc. Reason (R) Autecology deals with the study of a group of organisms.

Assertion (A) A network of food chains existing together in an ecosystem is known as food web. Reason (R) An animal like kite cannot be apart of food web.

The species diversity decreases from lower to higher altitudes on a mountain. This is due to

The species diversity decreases from lower to higher altitudes on a mountain. This is due to

Assertion Removal of keystone species cause serious disruption in the functioning of the community. Reason Keystone species are low in abundance (or biomass) than the dominant species.

Assertion In open water zone upto the depth to which light can penetrate, called photic zone. Reason The photic zone is categorized into euphotic and disphotic zone.

India is one of the twelve megadiversity countries with ____ of genetic resources of the world.

Which of the following is not an invasive species?

Assertion: Rice field is an ecosystem for plants and animals. Reason: Gut of human/animals is an ecosystem for flora and fauna.

Assertion: Now-a-days, the biodiversity is declining with an accelerated rate. Reason: Exotic species are considered to be a major cause of extinction of species.

Which one has the largest species variety in India?

Assertion : There are 34 biodiversity hotspots in the world. Reason : High level of species richness is a criteria for selection of a biodiversity hotspot.

Which of the following is best method of germplasm conservation?

Which of the following has highest diversity in India?

Which part of the world has a high density of organism?

Keystone species deserve protection because these

In India, we find mangoes with different flavours, colours, fibre content, sugar content and even shelf-life. The large variation is on account of

Biosphere reserves differ from National Parks and Wildlife sanctuaries because in the former

Which one of the following pairs of geographical areas show maximum biodiversity in our country?

Genetic diversity in agricultural crops is threatened by:

One of the ex situ conservation methods for endangered species is:

Which one of the following is a pair of endangered species?

If the Bengal Tiger becomes extinct

A lake with an inflow of domestic sewage rich in organic waste may result in

Assertion : Tropical rain forests are disappearing fast in developing countries such as India. Reason : No value is attached to these forests because these are poor in biodiversity.