Science Class 7 Online Classes, CBSE Worksheets

Science Class 7 Online Classes, CBSE Worksheets

Science Class 7 Online Classes, CBSE Worksheets

 

CHAPTER-1 NUTRITION IN PLANTS

Worksheet 1 PDF Download

Class 7 chapter 1 Nutrition in Plants Part 1 – Online Video Lecture

Science Class 7 chapter 1 Nutrition in Plants Part 2 – Online Video Lecture

Science WORK SHEET FOR VII CLASS

ANSWERS THE FOLLOWING QUESTIONS, SOLVE IT IN NOTEBOOK, YOU CAN TAKE THE HELP OF OLD AND NEW BOOKS( IF YOU HAVE).

  1. What is symbiosis relationship?
  2. How are saprophytes, parasites & symbionts different from each other?
  3. How are water and minerals transported to the plant?
  4. What are parasitic plants? Explain with an example?
  5. How do leaves help a plant make its food?
  6. What are the different types of heterotrophic nutrition in plants? Give two examples of each?

FILL IN THE BLANKS

  1. Chlorophyll containing structure in a plant cell _______
  2. Chlorophyll helps the plant to _______
  3. An organism that obtains nutrients from decaying organic matter is called _______
  4. Light energy is converted into chemical energy during the process of _______
  5. The food synthesized by the plant is stored as_______
  6. The food factories of the autotrophic plants are their _______
  7. Mistletoe is an example of _______
  8. Most plants and unicellular algae are _______
  9. Insectivorous plants are _______
  10. During photosynthesis the stomata helps in the intake of _______
  11. The pipe like structures that transport the food in plants are called _______
  12. Rhizobium bacteria that live in roots of certain plants _______
  13. Carbon dioxide is absorbed by the plant through an opening called _______
  14. The water taken up into the leaves make the guard cells _______
  15. Organisms that make their own food are called _______

Answers of fill up are

  1. chloroplast
  2. absorb energy from the sunlight
  3. a saprophyte
  4. photosynthesis
  5. starch
  6. leaves
  7. parasitic plant
  8. autotrophic
  9. heterotrophs
  10.  Carbon dioxide
  11. phloem
  12. fix nitrogen
  13. Stomata
  14. swell
  15. autotrophs

Science Class 7 Chapter 2 nutrition in animals video part 1

Class 7 Science Chapter 2 nutrition in animals video part 2

worksheet-nutrition-in-animals

Class 7 Science CHAPTER-2 nutrition in animals

Class-7-Science-CHAPTER-2-nutrition-in-animals

WORKSHEET 4 Class 7 Science Ch 3 NUTRITION IN ANIMALS

  1. Differentiate between absorption and assimilation?
  2. How does tooth decay take place?
  3. What are the functions of tongue?
  4. What is the role of epiglottis?
  5. Write short notes on the roles of the following organs in nutrition in humans.
    a. Oesophagus. b.Liver. c. Large intestine

Science Light Class 7

Science-Light-Class-7

WORKSHEET CLASS VII, CHAPTER– 17 ( FOREST OUR LIFELINE )

https://www.youtube.com/watch?v=BK-dYULd2kw&feature=youtu.be

Answers the following questions:–

  1. Define the following: (a) Crown, (b) Understoreys and (c) Canopy.
  2. Name the process by which plants release oxygen.
  3. Name any two forest products.
  4. Explain the importance of forest.
  5. What is the interrelationship between plants, soil and decomposers?
  6. Discuss the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere.

Fill in the blanks:–

  1. Forest provides a ______________ for many animals and plants.
  2. The decaying animal _______________ provides nutrients to the seedling in the forest to grow.
  3. A forest is a purifier of __________ and ____________ water.
  4. Forest also acts as natural__________________ of rain water.
  5. Forest is dynamic living__________.

Worksheet Of Science CLASS 7 Ch 17 FOREST OUR LIFELINE

Answers the following questions:–

  1. What is meant by deforestation?
  2. Explain the reasons behind deforestation.
  3. List the various impacts of deforestation.
  4. Whai is soil erosion? What are its cause and how it is prevented?
  5. If there were fewer trees, how will the water cycle be affected?
  6. Explain why there would be the chances of increase in carbon dioxide with the decrease in number of forests?
  7. True/False
    1. Forests protect the soil from erosion.
    2. Plants and animals in a forest are not dependent on one another.
    3. Forests influence the climate and water cycle.
    4. Soil helps forests to grow and regenerate.
  8. Fill in the blanks:–
    1. ____________________ is a system comprising various plants, animals and micro-organisms.
    2. In a forest, ___________________ forms the uppermost layer followed by shrubs.
    3. Forests are the______________________ for the forest dwelling communities.
    4. ________________________convert the dead plants and animals to humus.
    5. Forest serve as__________________________ and water purifying system in nature.

Class 7 Science Ch 7 Digestion in Animals Worksheet 5

Class-7-Science-Ch-7-Digestion-in-Animals-Worksheet-5

Science Class 7 Chapter-17 FOREST OUR LIFELINE WORKSHEET 6

Class-7-Chapter-17-FOREST-OUR-LIFELINE-WORKSHEET-6

WORKSHEET ANSWERS OF CLASS 7 CH 17  FOREST OUR LIFELINE

Answers-key-with-questions-chapter–17-forest-of-previous-week-worksheet

REVISION WORKSHEET OF CLASS 7 CH 1 NUTRITION IN PLANTS

class-vii-chapter-1-autotrophic-nutrition-in-plants-

REVISION WORKSHEET OF CHAPTER–2 (NUTRITION IN ANIMALS)

Revision-worksheet-ch–-nutrition-in-animals-claas-VII-for-11-may-to-16-may

Revision worksheet

SCIENCE-CLASS-7TH-REVISION-WORK-SHEET7

 

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