CBSE Class 7 Science Forests: Our Lifeline Worksheets with Answers - Chapter 17 - PDF

CBSE

Class 7

Science Worksheets

Forests Our Lifeline

Worksheets For Class 7 Science

CBSE Class 7 Science Forests: Our Lifeline Worksheets with Answers for Chapter 17 in PDF format to download prepared by expert Science teachers from the latest edition of CBSE(NCERT) books. Register Online for NCERT Solutions Class 7 Science tuition on Vedantu.com to score more marks in CBSE board examination. Vedantu is a platform that provides free CBSE Solutions (NCERT) and other study materials for students. Maths Students who are looking for the better solutions, they can download Class 7 Maths NCERT Solutions to help you to revise the complete syllabus and score more marks in your examinations.

Topics in CBSE Class 7 Science - Forests: Our Lifeline:

This chapter highlights the state of our country's woods, their importance, and the consequences of their depletion on the environment and people.

S.No	Topic
1	Forests: Our Lifeline
2	Visit to a Forest

Short Notes on CBSE Class 7 Science - Forests: Our Lifeline:

What Exactly is a Forest?

A forest is an area or a section of land that is densely forested and home to a diverse range of flora. Not only that, but forests are part of a larger ecosystem that includes trees, bushes, plants, microbes, wild animals, and birds. Non-living or abiotic components such as sunshine, air, nutrients, water, and rocks are also included.

What Exactly are a Crown and Canopy?

The crown of a tree refers to the topmost portion or top of the tree. Different trees grow tall together in the forest, and their branches appear like the woodland's ceiling because no sky is visible through these trees. This is known as Canopy.

Stratification in Forests:

Stratification is the division of a natural ecosystem into various strata based on the heights of the plants or vegetation present. This reduces competition among animals and makes it easier for them to survive. Climate, temperature, light availability, soil type, and rainfall all influence the number of strata found in a forest. A forest's trees are classified into the following divisions in general: The Forest Floor, the Herb Layer, the Shrub Layer, the Understory, the Canopy, and the Emergent Layer are the several layers that make up the forest.

Forests - Dynamic Living Entity:

Forests are dynamic living entities in which all organisms, whether plants or animals, rely on and assist one another in order to exist. Plants are the only source of sustenance for herbivores. Carnivores rely on herbivores for survival. The decomposition of dead animals, plants, and their excreta allows more plants to thrive by providing them with appropriate nutrients. The decomposers help plants flourish by decomposing dead debris in the forest. As a result, forests are known as Dynamic Living Entities.

Importance of Forests:

Forests are important because they provide a natural habitat for a diverse range of animals and plants. They aid in the regulation of oxygen and carbon dioxide levels in the atmosphere. They help to prevent global warming by keeping the air pure by absorbing all of the CO₂. They control the earth's water cycle. They mitigate pollution of the air, water, land, and noise in some way.

They are a rich supply of various human-made products, including fruits and vegetables are a good source of vitamins and minerals. Wood, raw materials for various industries such as paper, wood, and so on, medical items, latex, gum, and resins, honey, and wax, spices, oils, and bones and fur.

How Can Woods Help To Maintain the Water Cycle?

We know that plants use the process of transpiration to get rid of surplus water. Water vapour is emitted into the atmosphere as a result of this process. As a result, trees increase the amount of water vapour in the atmosphere. This water vapour condenses into clouds, causing more rain to fall in the vicinity. This rainwater seeps into the ground, raising the level of subsurface water. As a result, forests help to maintain the water cycle.

Tips for Excelling in Exams:

Seek Assistance From Your Teacher. If you're still perplexed by the matter, seek clarification. Look up your teacher's open office hours and make an appointment to see them. Bring a few questions regarding the issue and see if they can answer them.
As Soon as You Learn About the Exam, Begin Studying. Early on, get a head start so you don't have to cram later. While it may be tempting to leave your study till the last minute, you will not remember as much when the exam time comes.
Examine Your Notes on the Same Day That You Took Them. When you take notes while they're still fresh in your mind, you'll recall them better. Read through your notes again within 3–4 hours after taking them so you may review what your teacher covered.
Remove Any Potential Sources of Distraction. Turn off your electronics so you can focus on your work. Wait till you've finished your studies to check your notifications, even if it's tempting. To avoid being seduced by social media, set your phone to "Do Not Disturb" mode, turn off the TV, and log out of it.

FAQs on CBSE Class 7 Science Forests: Our Lifeline Worksheets with Answers - Chapter 17 - PDF

1. What role do woods play in preventing floods and soil erosion?

Rainwater can soak into the ground because forests act as a natural absorber. As a result, the water table in the wooded region is very high. Forests regulate water flow and prevent flooding. This is because plants and trees hinder rainwater from running away immediately. Forests allow for a controlled flow of water to surrounding streams in this way. Plant roots also bind the soil, preventing it from being washed away by severe rainfall. As a result, they help to avoid soil erosion.

2. How can woods support a diverse range of animals?

Forests supply a variety of wild creatures, insects, and microorganisms with optimal environmental conditions, food, and refuge. The forest's trees provide refuge, while a variety of flora and animals provide sustenance. Forests are home to a wide range of insects and microorganisms because the soil is extremely rich, providing these organisms with ideal living conditions such as water and nutrients. Forests also support a variety of food chains due to their diverse biodiversity. Different types of life on the planet are interdependent.

3. How can I stand out in the final exam in CBSE Class 7 science exam?

Chapters from the textbook should be read and summarised. You can split your time studying the chapters and taking quick breaks. Gather your materials and place them on a table or desk. Grab a bite to eat and take a seat. This will assist you in establishing a study mood. Take a break for a few moments. Do some jumping jacks, get some fresh air, or eat a nutritious snack. If you wake up and move around a little, you will most likely feel rejuvenated. Try meditating while breathing deeply and slowly. Yoga can also help to freshen your mind and boost the quantity of knowledge you absorb.

4. Are there any CBSE worksheets available for Forests Our Lifeline?

Forests Our Lifeline worksheets for class 7 are available for free download in PDF format on the Vedantu official website. Forests Our Lifeline worksheets for CBSE class 7 include worksheets based on the NCERT syllabus. The worksheets on class 7 Science Forests Our Lifeline are available for free download and printing. This article has one worksheet for chapter 16 in CBSE Class 7. It contains details about the syllabus, the outcome of the chapter and some important short notes to which students can find free access.

5. Why does a forest have no waste?

Forests are nature's perfect recycling factories. Nothing is thrown away here. A forest is a living system that includes a variety of plants, animals, and microorganisms. Decomposers, a type of microorganism, perform a crucial function in the forest. The nutrients from dead plants and animals are released into the soil because of the existence of hummus. The roots of living plants then receive these nutrients once more. Vultures, crows, jackals, and insects feast on the bodies of the deceased. Nutrients are cycled in this fashion. In a forest, therefore, nothing goes to waste.