Tag: conservation of wildlife

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Questions Related to conservation of wildlife

Multiple choice biology main natural resources classification of threatened species red data book conservation of wildlife

The extinction of passenger pigeon was due to 

  1. increased number of predatory birds.

  2. over exploitation by humans.

  3. non-availability of the food

  4. bird flu virus infection.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The passenger pigeon or wild pigeon (Ectopistes migratorius) is an extinct species of pigeon that was endemic to North America. Its common name is derived from the French word passager, meaning "passing by", due to the migratory habits of the species. The scientific name also refers to its migratory characteristics. The morphologically similar mourning dove (Zenaida macroura) was long thought to be its closest relative, and the two were at times confused, but genetic analysis has shown that the genus Patagioenas is more closely related to it than the Zenaida doves. The main reasons for the extinction of the passenger pigeon were the massive scale of hunting, the rapid loss of habitat, and the extremely social lifestyle of the bird, which made it highly vulnerable to the former factors. Deforestation was driven by the need to free land for agriculture and expanding towns, but also due to the demand for lumber and fuel. Though there are still large woodland areas in eastern North America, which support a variety of wildlife, it was not enough to support the vast number of passenger pigeons needed to sustain the population.  As the flocks dwindled in size, the passenger pigeon population decreased below the threshold necessary to propagate the species.

So the correct option is 'over exploitation by humans'.

Multiple choice biology main natural resources classification of threatened species red data book conservation of wildlife

A similarity among black buck, gharial and rhinoceros and marsh crocodile is that they are

  1. Endangered species

  2. Oviparous

  3. Animals with thick chitinous skin

  4. Found in forests of north-East India
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The similarity between black buck, gharial, rhinoceros and marsh crocodile is that they all are endangered species as they are likely to extinct in near future.

Multiple choice biology main natural resources classification of threatened species red data book conservation of wildlife

Match Column I with Column II and select the correct option from the codes given below.

Column I Column II
(a) Endemic species (i) Species that exist in very small number
(b) Endangered species (ii) Species found exclusively in a particular area
(c) Vulnerable species (iii) Species that are likely to become endangered
(d) Rare species (iv) Species that are likely to get extinct in the near future

  1. a- (ii), b- (iii), c- (i), d- (iv)

  2. a- (iv), b- (ii), c- (iii), d- (i)

  3. a- (iii), b- (i), c- (ii), d- (iv)

  4. a- (ii), b- (iv), c- (iii), d- (i)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An endemic species is a plant or animal species with a habitat restricted to one area. An endangered species is a species which are less in number and can be extinct in near future. A vulnerable species is a species of animals or plants, which are likely to become endangered unless something changes. A rare species is a group of organisms that are very uncommon, scarce, or infrequently encountered. Thus, the correct answer is option D.


Multiple choice biology main natural resources classification of threatened species red data book conservation of wildlife

Which of the following is an extinct species?

  1. Duck

  2. Dodo

  3. Dinosaur

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The dodo (Raphus cucullatus) is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the Indian Ocean. About 65 million years ago the greatest mass extinction in earth history occurred, resulting in the loss of the dinosaurs.

Therefore, the correct answer is option D.

Multiple choice biology main natural resources classification of threatened species red data book conservation of wildlife

Reasons that the population size of an exotic species often grows rapidly when the species is introduced in a new environment include which of the following?
(i) The exotic species is resistant to pesticides.
(ii) There is a large, underutilised food source in the new environment.
(iii) The exotic species has few natural predators in the new environment.

  1. (i) only

  2. (ii) only

  3. (i) and (iii) only

  4. (ii) and (iii) only
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Exotic species are those species which are introduced from distant or foreign region. These species grows very fast as in the new area there are no or less competition for food and space, and also less predators and hence they show rapid reproduction and fast dispersal ability.
So, the correct answer is option D.
Multiple choice biology main natural resources classification of threatened species red data book conservation of wildlife

Dodo is a

  1. Rare species

  2. Extinct species

  3. Endangered species

  4. Vulnerable species
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dodo was a bird which cannot fly. This bird was found in the regions of Madagascar. The birds were transported by humans to different places. The bird got extinct about in the years of 1688-1700 because they were commonly used as food by the Dutch people. The fossils of the bird were found in the regions near Madagascar. There are cast and molds made of this bird which is present in the museums.

Thus, the correct answer is option B. 

Multiple choice biology main natural resources classification of threatened species red data book conservation of wildlife

The death of the last individual of a species is called as

  1. Extinction

  2. Rare

  3. Endangered

  4. Threatened
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The species that no more exist on earth are known as extinct species Eg. dinosaurs. The species which are on the verge of extinction and which are required to be protected and conserved are known as endangered or threatened species, Eg. tiger. A rare species is a group of organisms that are very uncommon, scarce, or infrequently encountered. Thus, the correct answer is option A.