Reproduction in Plants, Ch 12, Lect 2 Class 7

Reproduction in Plants, Ch 12, Lect 4 Class 7

Reproduction in Plants, Ch 12, Lect 3 Classs 7

SOLUTIONS OF WORKSHEET , TRANSPORTATION IN PLANTS AND ANIMALS, CH 11, CLASS 7

 1. Haemoglobin 

2. Heart Beat

3. Arteries

4. Capillaries

5. Urea

6. clotting

7. Pulse

8. Blood

9. Ammonia

10. Uric acid

11. Transpiration

12. Translocation

13. capillaries

14. plasma

 15. Haemoglobin

16. white blood cells

17. pulse

18. unicellular

19. 72

20. vascular system

21. xylem

22. transpiration pull

23. phloem

24. transpiration

25. pulmonary artery

Reproduction in Plants, Ch 12, Lect 2 Class 7

WORKSHEET , TRANSPORTATION IN PLANTS AND ANIMALS, CH 11, CLASS 7

 1. ______________ component of RBC transport oxygen from the lungs to all the cells of body.

2. One complete cycle of contraction of the heart followed by its relaxation is called __________

3. _____________ are the blood vessels that carry blood from the heart to various parts of body.

4. _______________ are the extremely thin blood vessels which connect arteries to veins.

5. The main excretory product in human being is _____________

6. Platelets play major role in blood ____________

7. Throbic movements due to blood flow in arteries are called __________

8. ___________ is fluid connective tissue that flows in blood vessels.

9. Aquatic animals like fishes excrete body wastes as ____________

10.  Animals like snakes excrete semi-solid white coloured compound called ____________

11. Loss of water in the form of vapour through leaves is called _____________

12. The transportation of food from the leaves to other parts of plant is called ________

13. The tiny branches of blood vessels that connect arteries with the veins are called ________.

14. Blood contains a pale yellow liquid called ________.

15. The red blood cells contain ________.

16. ________ destroy the germs that enter our body.

17. The Heartbeat is indicated by ________.

18.Bacteria are ________ organisms.

19. Our heart beats ________ times per minute.

20.The transport system in plants is called ________.

21.The structure that transport water and minerals in plants is ________.

22.Water rises in the xylem tubes due to ________.

23.The tissue that transport food in plants is the ________.

24.The loss of water from the stomata is called________.

25. The impure blood is transported from the right ventricle to the lungs by________.

Reproduction in Plants, Ch 12, Lect 1, Class 7

EXTENSION OF DATE OF REGISTRATION OF GREEN OLYMPIAD, CLASS 4TH TO 12TH

  This is a gentle reminder for our member schools to register for GREEN Olympiad 2020.

                 The deadline of registration has been extended till 20^th October 2020.

                 Those who have already registered, may kindly ignore this mail.

 

We take this opportunity to thank you for being an integral part of the initiative ‘GREEN Olympiad’ - the first national and international level environment examination for school children organized by TERI annually since 1999. Your school has been an active participant of this unique initiative and we appreciate your support and cooperation in making it a great success. The examination serves a dual purpose of testing the environment quotient of students and enhancing their understanding about various issues related to sustainable development. Due to Covid-19 pandemic, the examination will be conducted ‘ONLINE’ so that students can appear from anywhere at their convenience.

 

This year, ‘GREEN Olympiad’ is open for students of classes 4 to 12, and is divided into 4 levels (classes 4-5; classes 6-8; classes 9-10; classes 11-12). This will also carry a special section to create awareness amongst students about COVID-19. On the basis of communications received from many schools, the registration is open for both schools as well as students (individually, where school participation is difficult). All participants will receive certificates based on their performance. Registration can be made ‘Online’ through the through the link: https://www.teriin.org/olympiad/registration/. The National Education Policy 2020 (Clause 4.42) by the Ministry of Human Resource Development, Government of India also reinstates the relevance and value of ‘Olympiads’ in the learning process.

 

We are attaching herewith the required information for your ready reference. A copy of the circular issued by CBSE in this regard is also attached for your reference. (Students can appear for this examination from anywhere, anytime in between 0900 hrs – 1800 hrs). Request you to kindly circulate the information with students through your ongoing online engagements and encourage them to participate in this green initiative. Please visit the project website: https://www.teriin.org/olympiad, for more details.

 

As requested by many schools, the last date has been extended till 20 October 2020.

 

VASCSC (VIKRAM A SARABHAI COMMUNITY SCIENCE CENTRE) Science School for hands-on learning at home

 

For registration click on link: 

http://scienceshop.vascsc.org/product-category/science-schoolhome/

SOLUTIONS OF TRANSPORTATION IN PLANTS AND ANIMALS, CHAPTER 11, CLASS 7

 1. Match structures given in Column I with functions given in Column II.

Column- I	Column-II
(i) Stomata	(b) Transpiration
(ii) Xylem	(d) Transport of water
(iii) Root hairs	(a) Absorption of water
(iv) Phloem	(c) Transport of food

2. Fill in the blanks.

(i) The blood from the heart is transported to all parts of the body by the arteries .

(ii) Haemoglobin is present in red blood cells.

(iii) Arteries and veins are joined by a network of capillaries.

(iv) The rhythmic expansion and contraction of the heart is called heartbeat.

(v) The main excretory product in human beings is urea .

(vi) Sweat contains water and salts .

(vii) Kidneys eliminate the waste materials in the liquid form called urine .

(viii) Water reaches great heights in the trees because of suction pull caused by transpiration .

3. Choose the correct option:

(a) In plants, water is transported through

(i) xylem

(ii) phloem

(iii) stomata

(iv) root hair

(b) Water absorption through roots can be increased by keeping the plants

(i) in the shade

(ii) in dim light

(iii) under the fan

(iv) covered with a polythene bag

a) i) Xylem

b) iii) under the fan

4. Why is transport of materials necessary in a plant or in an animal? Explain.

Transport of materials is necessary in a plant or an animal for the following reasons:

• To transport food to various parts of the body
• Animals need to transport wastes to parts from where they can be removed.

5. What will happen if there are no platelets in the blood?

If there are no platelets, then blood will not clot as platelets release blood clotting factor at the site of injury.

6. What are stomata? Give two functions of stomata.

Tiny pores present on the leaf surface are known as stomata.

Functions of stomata

• Helps in exchange of gases
• Evaporation of water through leaves occurs due to stomata.

7. Does transpiration serve any useful function in the plants? Explain.

Transpiration serves following function in plants

• It helps in lowering temperature of plants, thus preventing heat injury of plants.
• Helps in transpiration pull, which helps in raining water in higher plants.
• It also causes loss of water absorbed by plants.

8. What are the components of blood?

Solution:

Red blood cells, white blood cells, platelets and plasma.

9. Why is blood needed by all the parts of a body?

Blood is a significant part of transport system in our body, and we need blood for the following reasons:

• For the transport of oxygen to all parts of our body
• To expel out carbon dioxide from our body
• To transmit heat thus helping in the regulation of body temperature.
• It is required to fight out infections and diseases.

10. What makes the blood look red?

Haemoglobin, a red pigment present in the blood makes it look red.

11. Describe the function of the heart.

The heart is an organ which beats continuously to act as a pump for the transport of blood, which carries other substances with it. The heart has four chambers. The two upper chambers are called the atria (singular: atrium), and the two lower chambers are called the ventricles. The partition between the chambers helps to avoid mixing up of blood-rich in oxygen with the blood-rich in carbon dioxide. Blood flows from the heart to the lungs and back to the heart from where it is pumped to the rest of the body.

12. Why is it necessary to excrete waste products?

When our cells perform their functions, certain waste products are released. These are toxic and hence need to be removed from the body.

13. Draw a diagram of the human excretory system and label the various parts.

QUICK REVISION, CLASS 7, CH 1 to 10

 

1.Chlorophyll containing structure in a plant cell _______
2. How does gaseous exchange take place in earthworms?
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 process in which complex food is broken down into simple, water soluble substances is called___________________________________
6.The set of teeth that grows during infancy is called ____________________________

7.  The process of selecting parent sheep for obtaining special characteristics in their offspring’s is called_______________

8. Heat is transferred in liquids by________________________
9. We receive heat from sun by__________________________

10.The most commonly used natural indicator is__________________________and is extracted from______________________________
11. Aqueous solution of baking soda is bitter in taste and feels soapy on touching because it contains______________________________

12. Show with the help of chemical & word equation the chemical reaction between Burning of magnesium ribbon.

13. Galvanisation is a process used to prevent the rusting of which of the following?
(a) Iron
(b) Zinc
(c) Aluminium
(d) Copper

14. The short-term variation which occur in the atmosphere is called________________________
15. Name the characteristic that enables the animals to blend with surroundings like skin color is ________________________

16. Match the following –

17. Breaking down of rocks by the action of wind, water and climate is called ___

18. The spaces between soil particle are known as ________

19. How are dust particles prevented from entering the lungs?

20. What is produced when human cells respire anaerobically?

TRANSPORTATION IN PLANTS AND ANIMALS (FLASH CARD ACTIVITY)

 https://h5p.org/node/1032623

SHAPES (Flash Card Activity)

https://h5p.org/node/1029472

ANIMAL CELL CULTURE, PRACTICE TEST (MARKS 15)

 1. Frozen animal cell culture should be thawed in a water bath maintained at 37degree celsius, with moderate shaking. Why? [1]

2. An enriched medium containing salts, glucose, proteins and vitamins was made and a commercially available animal cell line was introduced. However, the cells began dying. What could be the reason behind it?   [1]

3. What is A in the flow chart? [1]

4. r - HUEPO has advantages over blood transfusion. List any two of them. [1]

5. Diagrammatically show the cultivation of adult stem cells from bone marrow and their differentiation into specialized cells. Name two scientists who established the field of stem cell research. For which medical conditions, stem cells can be used (Write any two)? [5]

5. What is Gene Knock out? [1]

6. Enlist the advantages and limitations of animal cell culture (two each). [2]

7. Outline the process of creation of chimeric mouse by embryonic stem cell culture. [3]

ANIMAL CELL CULTURE (SELF EVALUATION SHEET)

https://h5p.org/node/1029446?feed_me=nps

PRACTICE WORKSHEET OF GENOMICS (Introduction, GenePrediction, SNP, FISH)

1. Define SNPs. Describe a possible use of this technique in medicine. How do the physicians decide our susceptibility or resistance to a particular disease through this technique? Explain with the help of an example.

2. Gene prediction by computers is different from number of genes identified by experimental methods. Why is it so? Is there any correlation between the complexity of an organism and the total number of genes in its genome? Justify.

3. Name the two methodologies used for genome sequencing. Present a comparative account.

4. CML patients have the ‘Philadelphia Chromosome”. How is this chromosome detected? Explain the technique with a diagram.

5. A  Chronic Myelogenous Leukemia (CML) patient has been put on a combination drug therapy for the past 2 months. How can the FISH technique be used to monitor the effect of chemotherapy?

6. Based on Genomic studies, why do people say that different species and organisms had a common ancestor 100 million years ago.    

7. There is no simple correlation between the intuitive complexity of an organism and the number of genes in its genome. Do you agree with the statement? Justify your answer.

8. It is believed that each person’s genome is 99.8% is identical to everyone else’s. Discuss the basis of this 0.2% difference in DNA sequence of  individuals. Does it always occur in coding regions of the genome? Suggest the usefulness of studying such variations using two examples.

9. How are fluorescent colors introduced into chromosomes? Give a possible use of this technique. Draw a suitable diagram of the same

10. (a) Human population vary greatly in their susceptibility to diseases. Why?

(b)Which present day approach can assist physicians in predicting with confidence the risk of developing a disease.

Introduction and Evolving Approaches GENOMIS AND BIOINFORMATICS Lect 1, ...

Human Heart, Lect 2, Transportation in Animals and Plants, Ch 11, Class ...