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All questions of Saving the Gharial for Class 8 Exam
What is the significance of the gharial's "buzz-snort" sound?- a)It helps in hunting fish
- b)It attracts mates and deters rivals
- c)It is used for communication with other species
- d)It signals danger to other gharials
Correct answer is option 'B'. Can you explain this answer?
What is the significance of the gharial's "buzz-snort" sound?
a)
It helps in hunting fish
b)
It attracts mates and deters rivals
c)
It is used for communication with other species
d)
It signals danger to other gharials
 | Nishtha Kumar answered |
The Significance of the Gharial's "Buzz-Snort" Sound
The gharial, a unique crocodilian known for its long, slender snout, produces a distinctive "buzz-snort" sound that plays a crucial role in its social interactions. Understanding the significance of this sound can provide insight into gharial behavior.
Attracting Mates
- The "buzz-snort" is primarily used during the breeding season.
- Male gharials produce this sound to attract potential mates, showcasing their presence and fitness.
- The sound can signal to females that a male is ready to mate, enhancing reproductive success.
Deterring Rivals
- In addition to attracting females, the "buzz-snort" serves as a warning to other males.
- By vocalizing, a male gharial can assert dominance and establish territory, reducing the likelihood of confrontations.
- This vocal display helps to minimize aggressive interactions, allowing for better resource allocation and mating opportunities.
Communication Within Species
- The "buzz-snort" is an important form of communication among gharials.
- It allows individuals to convey their presence and intentions, fostering social cohesion within groups.
- While not specifically for communication with other species, it enhances interactions within the gharial population.
Conclusion
In summary, the gharial's "buzz-snort" sound is of great significance as it primarily functions to attract mates and deter rivals. This unique vocalization plays a vital role in the reproductive success of males and helps maintain social order within gharial populations. Understanding these sounds enriches our knowledge of their behavior and ecology.
The gharial, a unique crocodilian known for its long, slender snout, produces a distinctive "buzz-snort" sound that plays a crucial role in its social interactions. Understanding the significance of this sound can provide insight into gharial behavior.
Attracting Mates
- The "buzz-snort" is primarily used during the breeding season.
- Male gharials produce this sound to attract potential mates, showcasing their presence and fitness.
- The sound can signal to females that a male is ready to mate, enhancing reproductive success.
Deterring Rivals
- In addition to attracting females, the "buzz-snort" serves as a warning to other males.
- By vocalizing, a male gharial can assert dominance and establish territory, reducing the likelihood of confrontations.
- This vocal display helps to minimize aggressive interactions, allowing for better resource allocation and mating opportunities.
Communication Within Species
- The "buzz-snort" is an important form of communication among gharials.
- It allows individuals to convey their presence and intentions, fostering social cohesion within groups.
- While not specifically for communication with other species, it enhances interactions within the gharial population.
Conclusion
In summary, the gharial's "buzz-snort" sound is of great significance as it primarily functions to attract mates and deter rivals. This unique vocalization plays a vital role in the reproductive success of males and helps maintain social order within gharial populations. Understanding these sounds enriches our knowledge of their behavior and ecology.
What unique physical feature do male gharials develop during adolescence?- a)A "ghara" that produces a "buzz-snort"
- b)Brightly colored scales
- c)Extra limbs for swimming
- d)A long tail
Correct answer is option 'A'. Can you explain this answer?
What unique physical feature do male gharials develop during adolescence?
a)
A "ghara" that produces a "buzz-snort"
b)
Brightly colored scales
c)
Extra limbs for swimming
d)
A long tail
| | Nandini Sengupta answered |
Unique Physical Feature of Male Gharials
Male gharials, a species of crocodilian found primarily in the rivers of the Indian subcontinent, develop a distinctive physical feature during their adolescence known as the "ghara."
What is a "Ghara"?
- The "ghara" is a bulbous, pot-shaped growth that appears at the tip of the male gharial's snout.
- This feature typically develops when the gharials reach sexual maturity, around 10 to 12 years of age.
Function of the Ghara
- The ghara plays a crucial role in mating rituals. It is believed to be involved in attracting females during the breeding season.
- The presence of the ghara enhances the male gharial's vocalizations, allowing them to produce a unique "buzz-snort" sound, which is a part of their courtship behavior.
Significance of the Buzz-Snort
- The "buzz-snort" is not just a mating call; it can also serve to establish territory among males.
- This vocalization, aided by the ghara, can be heard from a distance, helping males communicate effectively in their aquatic environment.
Conclusion
The development of the ghara is a fascinating aspect of male gharial biology, showcasing how physical characteristics can evolve to enhance reproductive success. This unique feature is a prime example of adaptation in the animal kingdom, emphasizing the importance of physical traits in mating and survival.
Male gharials, a species of crocodilian found primarily in the rivers of the Indian subcontinent, develop a distinctive physical feature during their adolescence known as the "ghara."
What is a "Ghara"?
- The "ghara" is a bulbous, pot-shaped growth that appears at the tip of the male gharial's snout.
- This feature typically develops when the gharials reach sexual maturity, around 10 to 12 years of age.
Function of the Ghara
- The ghara plays a crucial role in mating rituals. It is believed to be involved in attracting females during the breeding season.
- The presence of the ghara enhances the male gharial's vocalizations, allowing them to produce a unique "buzz-snort" sound, which is a part of their courtship behavior.
Significance of the Buzz-Snort
- The "buzz-snort" is not just a mating call; it can also serve to establish territory among males.
- This vocalization, aided by the ghara, can be heard from a distance, helping males communicate effectively in their aquatic environment.
Conclusion
The development of the ghara is a fascinating aspect of male gharial biology, showcasing how physical characteristics can evolve to enhance reproductive success. This unique feature is a prime example of adaptation in the animal kingdom, emphasizing the importance of physical traits in mating and survival.
How does the message of Janaki Lenin's work emphasize the importance of habitat conservation?- a)It highlights the interconnectedness of ecosystems
- b)It ignores human impacts on nature
- c)It focuses solely on the gharial's biology
- d)It suggests that species can survive without habitats
Correct answer is option 'A'. Can you explain this answer?
How does the message of Janaki Lenin's work emphasize the importance of habitat conservation?
a)
It highlights the interconnectedness of ecosystems
b)
It ignores human impacts on nature
c)
It focuses solely on the gharial's biology
d)
It suggests that species can survive without habitats
 | Trisha Vashisht answered |
The message of Janaki Lenin's work emphasizes the importance of habitat conservation by highlighting the interconnectedness of ecosystems. The survival of species like the gharial is depicted as directly linked to the health of their river habitats, demonstrating that protecting these environments is essential for both wildlife and human communities.
What has significantly reduced the gharial's habitat range from 20,000 to 200 square kilometers?- a)Damming and pollution
- b)Climate change
- c)Overfishing
- d)Urban development
Correct answer is option 'A'. Can you explain this answer?
What has significantly reduced the gharial's habitat range from 20,000 to 200 square kilometers?
a)
Damming and pollution
b)
Climate change
c)
Overfishing
d)
Urban development
 | EduRev Class 8 answered |
The gharial's habitat range has drastically shrunk due to damming, which alters river flow, as well as pollution and fishing nets that pose direct threats to their survival. This significant reduction in habitat not only affects gharial populations but also indicates broader ecological degradation of river ecosystems, which are vital for many species.
How do gharials demonstrate parental care?- a)Only males care for the young
- b)They abandon their young after hatching
- c)They migrate to different rivers with their young
- d)Mothers dig nests and both parents guard hatchlings
Correct answer is option 'D'. Can you explain this answer?
How do gharials demonstrate parental care?
a)
Only males care for the young
b)
They abandon their young after hatching
c)
They migrate to different rivers with their young
d)
Mothers dig nests and both parents guard hatchlings
| | Trisha Vashisht answered |
Gharials exhibit notable parental care, with mothers digging nests to free hatchlings and both parents guarding their young. This attentive behavior enhances the survival rate of the hatchlings, as they are protected from predators and environmental dangers. Such nurturing is rare among reptiles, making it an interesting aspect of gharial biology.
What does the decline of the gharial species reflect about river health?- a)Increased biodiversity
- b)Improvement in ecosystem health
- c)Enhanced conservation efforts
- d)Deterioration of river ecosystems
Correct answer is option 'D'. Can you explain this answer?
What does the decline of the gharial species reflect about river health?
a)
Increased biodiversity
b)
Improvement in ecosystem health
c)
Enhanced conservation efforts
d)
Deterioration of river ecosystems
| | Trisha Vashisht answered |
The decline of the gharial species is closely linked to the overall health of river ecosystems. As gharials are apex predators, their presence indicates a healthy, functioning ecosystem. Their decline signals serious issues such as pollution, habitat destruction, and unsustainable human practices, urging the need for conservation and restoration efforts in river habitats.
What role does the gharial's nesting behavior play in its survival?- a)It allows them to lay more eggs
- b)It keeps them hidden from predators
- c)It helps them attract mates
- d)It improves their swimming ability
Correct answer is option 'B'. Can you explain this answer?
What role does the gharial's nesting behavior play in its survival?
a)
It allows them to lay more eggs
b)
It keeps them hidden from predators
c)
It helps them attract mates
d)
It improves their swimming ability
| | EduRev Class 8 answered |
The gharial's nesting behavior, where females lay about 50 eggs in deep sand nests, is crucial for their survival as it camouflages the eggs from predators such as hyenas. This nesting strategy helps to ensure that more hatchlings survive to maturity, contributing to the population's recovery amid declining numbers.
What is the primary diet of gharials?- a)Birds
- b)Small mammals
- c)Fish
- d)Insects
Correct answer is option 'C'. Can you explain this answer?
What is the primary diet of gharials?
a)
Birds
b)
Small mammals
c)
Fish
d)
Insects
| | Trisha Vashisht answered |
Gharials are primarily fish-eaters, which is supported by their long, narrow snouts that are specifically adapted for catching fish in their river habitats. This dietary specialization makes them unique among crocodilians and highlights their role in controlling fish populations within their ecosystems.
Which project aimed at conserving gharials was initiated in 1974?- a)Project Gharial
- b)Project River Rescue
- c)Project Wildlife
- d)Project Crocodile
Correct answer is option 'D'. Can you explain this answer?
Which project aimed at conserving gharials was initiated in 1974?
a)
Project Gharial
b)
Project River Rescue
c)
Project Wildlife
d)
Project Crocodile
| | EduRev Class 8 answered |
Project Crocodile was launched in 1974 with the objective of conserving gharials through breeding and release programs. This initiative was supported by the United Nations and aimed to counter the significant population decline due to habitat loss and other threats. The project highlights the importance of coordinated conservation efforts in protecting endangered species.
What challenges did gharials face during the breeding and release efforts of Project Crocodile?- a)Lack of food
- b)High mortality from floods and nets
- c)Inability to adapt to captivity
- d)Competition from other species
Correct answer is option 'B'. Can you explain this answer?
What challenges did gharials face during the breeding and release efforts of Project Crocodile?
a)
Lack of food
b)
High mortality from floods and nets
c)
Inability to adapt to captivity
d)
Competition from other species
| | Trisha Vashisht answered |
During the breeding and release efforts of Project Crocodile, gharials faced significant challenges, particularly high mortality rates due to floods and entanglement in fishing nets. These issues illustrate the complexities of conservation work and the ongoing threats that endangered species face even after being bred in captivity.
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