The student's claim is incorrect. Day 14 ovulation applies only as a generalized midpoint within a textbook 28-day cycle. In reality, normal menstrual cycle lengths range between 21 and 35 days, shifting ovulation timing accordingly. Furthermore, external factors such as physical illness, nutritionaRead more
The student’s claim is incorrect. Day 14 ovulation applies only as a generalized midpoint within a textbook 28-day cycle. In reality, normal menstrual cycle lengths range between 21 and 35 days, shifting ovulation timing accordingly. Furthermore, external factors such as physical illness, nutritional intake, stress and lifestyle variations cause hormonal fluctuations that frequently alter the exact day an ovary releases a mature egg.
For more NCERT Solutions of Class 9 Science Exploration Chapter 11 Reproduction How Life Continues Question Answer (2026-27)
Elders highlight that traditional Indian societies preserved forests through deep-rooted religious and community ethics. Communities established 'Sacred Groves' (such as Sarnas or Devarakadus), pristine forest patches where hunting and tree felling were strictly prohibited to appease local guardianRead more
Elders highlight that traditional Indian societies preserved forests through deep-rooted religious and community ethics. Communities established ‘Sacred Groves’ (such as Sarnas or Devarakadus), pristine forest patches where hunting and tree felling were strictly prohibited to appease local guardian spirits. Furthermore, traditional customs strictly forbade cutting sacred keystone trees like Banyan, Peepal and Khejri and enforced customary seasonal bans on harvesting unripe wild fruits, tubers or firewood.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
The continued destruction of extensive forests will release billions of tons of sequestered carbon into the atmosphere, rapidly accelerating the greenhouse effect and global warming. This destruction destabilizes the water cycle, causing severe continental droughts, erratic monsoons and extreme flooRead more
The continued destruction of extensive forests will release billions of tons of sequestered carbon into the atmosphere, rapidly accelerating the greenhouse effect and global warming. This destruction destabilizes the water cycle, causing severe continental droughts, erratic monsoons and extreme flooding. Without root systems to anchor topsoil, widespread soil erosion and desertification will follow, destroying agricultural productivity, accelerating sea-level rise and triggering irreversible mass extinctions of terrestrial species.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
Forest fires, triggered naturally by lightning or sparked by human negligence like discarded cigarettes and uncontained agricultural residue burning, severely harm forest dwellers. They incinerate minor forest produce—such as gum, honey and tendu leaves—eliminating vital tribal income and causing acRead more
Forest fires, triggered naturally by lightning or sparked by human negligence like discarded cigarettes and uncontained agricultural residue burning, severely harm forest dwellers. They incinerate minor forest produce—such as gum, honey and tendu leaves—eliminating vital tribal income and causing acute respiratory illnesses. Effective prevention involves maintaining wide cleared fire lines, using real-time satellite fire-monitoring alerts, deploying rapid response beat patrols and actively involving forest-dwelling communities in participatory fire management.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
Forests earned the moniker ‘lungs of the Earth’ because their expansive foliage performs continuous gas exchange vital for terrestrial life. Through photosynthesis, trees absorb immense volumes of carbon dioxide, filtering airborne particulates and sequestering carbon in woody biomass. SimultaneouslRead more
Forests earned the moniker ‘lungs of the Earth’ because their expansive foliage performs continuous gas exchange vital for terrestrial life. Through photosynthesis, trees absorb immense volumes of carbon dioxide, filtering airborne particulates and sequestering carbon in woody biomass. Simultaneously, they release copious amounts of oxygen into the atmosphere and drive the hydrological cycle via transpiration, cleansing air currents and stabilizing the planet’s atmospheric and thermal equilibrium.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
A student claims, “In humans, ovulation always happens on day 14 of the menstrual cycle”. Critically examine this claim and state whether the claim is correct or not. Give at least two reasons for your answer.
The student's claim is incorrect. Day 14 ovulation applies only as a generalized midpoint within a textbook 28-day cycle. In reality, normal menstrual cycle lengths range between 21 and 35 days, shifting ovulation timing accordingly. Furthermore, external factors such as physical illness, nutritionaRead more
The student’s claim is incorrect. Day 14 ovulation applies only as a generalized midpoint within a textbook 28-day cycle. In reality, normal menstrual cycle lengths range between 21 and 35 days, shifting ovulation timing accordingly. Furthermore, external factors such as physical illness, nutritional intake, stress and lifestyle variations cause hormonal fluctuations that frequently alter the exact day an ovary releases a mature egg.
For more NCERT Solutions of Class 9 Science Exploration Chapter 11 Reproduction How Life Continues Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-11/
See lessDiscuss some traditional forest conservation methods with your grandparents or an elderly person.
Elders highlight that traditional Indian societies preserved forests through deep-rooted religious and community ethics. Communities established 'Sacred Groves' (such as Sarnas or Devarakadus), pristine forest patches where hunting and tree felling were strictly prohibited to appease local guardianRead more
Elders highlight that traditional Indian societies preserved forests through deep-rooted religious and community ethics. Communities established ‘Sacred Groves’ (such as Sarnas or Devarakadus), pristine forest patches where hunting and tree felling were strictly prohibited to appease local guardian spirits. Furthermore, traditional customs strictly forbade cutting sacred keystone trees like Banyan, Peepal and Khejri and enforced customary seasonal bans on harvesting unripe wild fruits, tubers or firewood.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessIf large forest areas continue to be destroyed, what do you think would be its long-term effect on the global climate?
The continued destruction of extensive forests will release billions of tons of sequestered carbon into the atmosphere, rapidly accelerating the greenhouse effect and global warming. This destruction destabilizes the water cycle, causing severe continental droughts, erratic monsoons and extreme flooRead more
The continued destruction of extensive forests will release billions of tons of sequestered carbon into the atmosphere, rapidly accelerating the greenhouse effect and global warming. This destruction destabilizes the water cycle, causing severe continental droughts, erratic monsoons and extreme flooding. Without root systems to anchor topsoil, widespread soil erosion and desertification will follow, destroying agricultural productivity, accelerating sea-level rise and triggering irreversible mass extinctions of terrestrial species.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessStudy the impact of forest fires on people dependent on forests. Try to include the causes, losses and preventive measures.
Forest fires, triggered naturally by lightning or sparked by human negligence like discarded cigarettes and uncontained agricultural residue burning, severely harm forest dwellers. They incinerate minor forest produce—such as gum, honey and tendu leaves—eliminating vital tribal income and causing acRead more
Forest fires, triggered naturally by lightning or sparked by human negligence like discarded cigarettes and uncontained agricultural residue burning, severely harm forest dwellers. They incinerate minor forest produce—such as gum, honey and tendu leaves—eliminating vital tribal income and causing acute respiratory illnesses. Effective prevention involves maintaining wide cleared fire lines, using real-time satellite fire-monitoring alerts, deploying rapid response beat patrols and actively involving forest-dwelling communities in participatory fire management.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See lessWhy are forests often called the ‘lungs of the Earth’?
Forests earned the moniker ‘lungs of the Earth’ because their expansive foliage performs continuous gas exchange vital for terrestrial life. Through photosynthesis, trees absorb immense volumes of carbon dioxide, filtering airborne particulates and sequestering carbon in woody biomass. SimultaneouslRead more
Forests earned the moniker ‘lungs of the Earth’ because their expansive foliage performs continuous gas exchange vital for terrestrial life. Through photosynthesis, trees absorb immense volumes of carbon dioxide, filtering airborne particulates and sequestering carbon in woody biomass. Simultaneously, they release copious amounts of oxygen into the atmosphere and drive the hydrological cycle via transpiration, cleansing air currents and stabilizing the planet’s atmospheric and thermal equilibrium.
For more NCERT Solutions of Class 9 Social Science Part 2 Chapter 2 Life on Earth Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/social-science/part-2-chapter-2/
See less