Moderate 847 likes

Question

Explain the causes of endangeredness of Polar Bear and Gangetic Dolphin.

WBBSE Class X Life Science 05 (d) Biodiversity and Its Conservation 2 2024

Answer

The Polar Bear is endangered mainly due to global warming causing melting of polar ice, which is its natural habitat, reducing its hunting grounds.

The Gangetic Dolphin is endangered due to water pollution, habitat destruction by dam construction, and excessive fishing activity in the Ganges river.

Related Questions

More WBBSE Moderate level questions

1/12
Moderate
935
Q. ‘Scarcity of food and poaching are two main reasons behind the endangeredness of a mammal...
A. Scarcity of food limits the survival and reproduction of mammals, weakening their...
Easy
642
Q. Write the names of two national parks of West Bengal.
A. Sundarban National Park and Jaldapara National Park. Explanation: Sundarban is famous for...
Moderate
611
Q. One of the environmental problems of Sunderbans is imbalance in prey – predator number —...
A. Imbalance in Prey–Predator Number in Sundarbans One of the major environmental problems...
Moderate
502
Q. Explain the following three problems related to ever-increasing human population
A. Problems Related to Ever-Increasing Human Population Over-exploitation and depletion of natural resources:...
Moderate
531
Q. Which aspect is the most emphasized in Project Crocodile launched for crocodile conservation?
A. The most emphasized aspect in Project Crocodile is increasing the population of...
Moderate
596
Q. What environmental problems can originate if the concentration of different greenhouse gases polluting air increases...
A. An increase in greenhouse gases causes global warming, leading to climate change,...
Moderate
861
Q. Prepare a list of reactants used and products in the experiment of Miller and Urey...
A. Reactants Products Methane (CH4) Organic compounds Ammonia (NH3) Amino acids Hydrogen (H2)...
Moderate
570
Q. How does a Rohu fish float and sink in water?
A. A Rohu fish floats and sinks in water by regulating the volume...
Moderate
545
Q. What types of struggle for existence can be found among the animals of a forest...
A. The types of struggle for existence among forest animals over eating meat...
Moderate
789
Q. What advantages did Mendel enjoy owing to pea-flowers being bisexual and self pollinating?
A. Mendel enjoyed two advantages: Bisexual flowers contain both male and female reproductive...
Moderate
673
Q. With the help of an example explain how the phenotypic and genotypic ratios found in...
A. In the case of incomplete dominance, such as flower colour in Mirabilis...
Moderate
796
Q. How does the Cytokinesis of plant cell happen?
A. Cytokinesis in plant cells occurs by the formation of a cell plate...