Loss of biodiversity may lead to all except:
1. decline in plant production
2. increased resistance to environmental perturbance
3. increased variability in water use
4. increased variability in pest and disease cycle

The main difference between "Sixth Extinction" and the previous five extinctions is that the sixth extinction:
1. is mainly occurring on islands
2. is mainly affecting plants
3. is occurring at a faster rate
4. does not involve human activities

What is applicable to both Lates niloticus and Lantana camara ?

1. They are on the verge of extinction due to over-exploitation by humans.

2. They are alien species that became invasive in certain environments causing threat to indigenous biodiversity.

3. They are mutualists and likely to undergo co-extinction in recent future.

4. They are keystone species and are vital to the stability of tropical ecosystems.

Which of the following is correctly matched?

(1) Arenchyma               -  Opuntia

(2) Age pyramid             -  Biome

(3) Parthenium hysterophorus - Threat to biodiversity

(4) Stratification             - Population

Red List contains data or information on
(1) all economically important plants

(2) plants whose products are in international trade

(3) threatened species

(4) marine vertebrates only

The organisation which publishes the Red List of species is

1. ICFRE  

2. IUCN  

3. UNEP  

4. WWF

Which of the following is not an invasive species?

(1) Parthenium hysterophorus

(2) Nelumbo (lotus)

(3) Lantana camara

(4) Eichhornia crassipes

One out of the following is not responsible for biodiversity loss.

(1) Alien species invasion

(2) Co-extinction

(3) Ex-situ conservation

(4) Deforestation

The term "The Evil Quartet" is related with:

(1) Four major causes of forest loss   

(2) Four major causes of population explosion

(3) Four major causes of air pollution 

(4) Four major causes of biodiversity losses

The exotic species, introduced in India for its flower and leaf is:

(1) Lantana                                       
(2) Water Hyacinth (Eicchornia)
(3) Parthenium                                  
(4) All are correct