Question 1

What does ICZN stand for?

Accepted Answer

International Code for Zoological Nomenclature.

Question 2

Expand ICZN.

Accepted Answer

International Code of Zoological Nomeclature.

Question 3

Kadamb plantation in mathura is destroyed much due to attack of :

Accepted Answer

Kadamb plantation in Mathura is destroyed much by attack of Cuscuta ( − a total stem parasite)

Question 4

Which one of the following is not used for ex situ plant conservation?

Accepted Answer

Shifting cultivation or Jhum cultivation is a kind of deforestation not conservation.

Question 5

North facing slopes of Himalayas support:

Accepted Answer

North facing slopes of Himalaya are dry and thus support xerophytic flora. The east facing or south facing slopes receive more rains at frequent intervals and thus quite wet which favour luxuriant growth of vegetation.

Question 6

American water weed that become a noxious weed for ponds and lakes of India is ;

Accepted Answer

Eichhornia crassipes (water-hyacinth) is a native of South America. It was once introduced in India for its beautiful flowers but later it became a noxious weed due to its adventive spread and weed nature.

Question 7

Nepenthes khasiana occurs in

Accepted Answer

Nepenthes khasiana is an endemic and exotic plant which grows in Khassia hills of Meghalaya only. Its population is greattly reduced due to biotic interference, overexploitation and restricted distribution. It attracts tourists through insectivory.

Question 8

Flood and deserts are the result of :

Accepted Answer

Flood on plains and desertification are due to deforestation for urbanization and industrialization hence they are due to misuse of environment or unecological planning.

Question 9

In India tropical deciduous forests are nearly :

Accepted Answer

India is a typical tropical country with rich deciduous forest in plains (upto 80% forest cover is deciduous, only 10−12% is evergreen or coniferous forests in hilly tracts of Himalayas and in some regions of Western and Eastern ghats).

Question 10

Best method of weed control is:

Accepted Answer

Best method of weed control is by biological control. In this method, suitable enemy of the weed is selected and allowed to feed over the weed plants till the weed is totally eradicated. This method has no side effect and there is no possibility of environmental pollution. It is totally ecofriendly.

Question 11

Spread of Opuntia was successfully controlled by :

Accepted Answer

Spread of Opuntia was successfully controlled using its biological enemies.

Question 12

Loranthus has well developed :

Accepted Answer

Loranthus and Viscum are partial stem parasite. They do not produce roots and remain attached with the host body through their well developed haustoria. They produce normal stem bearing green leves, flowers, flowers, fruits and seeds just like a normal angiosperm.

Question 13

Most noxious weed of terrestrial environment is :

Accepted Answer

Parthenium hysterophorus (Compositae) is the most trouble some terrestrial weed which causes allergy in human beings. Its pollens contain parthenin. It exerts allelopathic effect over many terrestrial weeds and crop plants.

Question 14

Cactoblastis was introduced in Australia to control adventive spread of :

Accepted Answer

Cactoblastica was introduced in Australia for controlling the adventive spread of Opuntia.

Question 15

Shifting cultivation is harming much to :

Accepted Answer

Slash and burn practice is adapted in shifting cultivation which is very harmful for biodiversity because of destruction species.

Question 16

The ex-situ conservation of genetic resources can be done through -

Accepted Answer

The ex-situ conservation of genetic resources can be done through tissue culture & germplasm bank.

Question 17

Red data book provides data on

Accepted Answer

The list of endangered species of plants and animals is given in Red Data Book.

Question 18

World Wild Life Week is

Accepted Answer

Wild life week is celebrated on Monday of first week of October.

Question 19

Which of the following is most dangerous to wild life?

Accepted Answer

Habitat destruction is most dangerous to wild life because habitat provide suitable atmosphere for survival of wild life.

Question 20

Plant genes of endangered species are stored

Accepted Answer

Gene banks are large collections of germ plasm representing materials from various parts of the world. In our country, NBPGR (National Bureau of Plant Genetic Resources), New Delhi is maintaining gene banks of different crop atoms.

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Solutions for Biology-for-NEET-Volume-2-Class-XII by Career Point, Biodiversity and Conservation

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