Wednesday, May 13, 2020

Friday, May 8, 2020

SUMMER VACATION HOMEWORK, SCIENCE (CLASS 7)


Dear students
Summer break is an amazing time for all of us, as you get enough time for enjoying the activities you love. But in the avid of the current situation you all are not able to step out of your houses and moreover this is not safe to go outside. You can use this time to explore new things, enhance individual knowledge and develop new skills. As, we will don't have much work and not going to any trips this session we have comparatively more time. We have to cut down our screen times (the time which we spend in front of TV and mobiles). I can suggest some of the activities for these 40 days which will make you more creative and skillfull as
·         DRAW DOODLES
·         MAKE PAINTINGS
·         MAKE A MODEL OF THE THING WHICH EXCITES UOU MOST
·         PLANT A TREE NEAR TO YOU
·         HELP YOUR MOTHER IN KITCHEN, LEARN ATLEAST 2 FOODITEMS WHICH YOU CAN MAKE FOR YOUR FAMILY
·         BOYS OR GIRLS, EVERYONE SHOULD KNOW FEW HOUSEHOLD WORKS
·         CONVERT WASTE INTO WEALTH (i.e. RECYCLE AND REDUCE)
·         DESIGN A GAME TO PLAY AT HOME
·         HELP YOUR YOUNGER ONES AT STUDY
·         WRITE STORIES OR DESIGN CARTOON CONCEPTS
·         DO PAPER MACHE
·         TRY TO READ NEWSPAPER IF YOU ARE GETTING IT OR OTHERWISE READ ANY KIND OF GOOD BOOKS AVAILABLE AT HOME ( WE DEFINITELY WILL LEARN SOMETHING)
YOU CAN TAKE ANY OF THE ACTIVITIES WHCICH ENTHRILLS YOU.
SCIENCE HOLIDAYS HOMEWORK:
·         Prepare and complete chapter 1 to 3 in your science notebook.
·         Prepare a question bank of 10 questions from each chapter that contains:
Ø  4 questions of 1 marks
Ø  3 questions of 2 marks
Ø  2 questions of 3 marks
Ø  1 question of 5 marks
Ø  1 diagram based question
                Thus total 30 questions prepared by you and also solve them in your science notebook.
·         Write an article on "NATIONAL SCIENCE DAY" in your science notebook.
·         Covid 19 - Write about it and its causative organism. Know about any 10 science related new words in relation with this disease and write about them in your science notebook.
·         Complete all the worksheets given to you.
                                .....................STAY HOME STAY SAFE......................



Thursday, May 7, 2020

DNA sequencing SANGER'S METHOD in continuation

MCQ's CH 2, CLASS 7

An online test

https://www.examfear.com/test/Class-7/Biology/Nutrition-in-Animals.htm


MCQs:

Solve these and write the answers in your notebook. I will send the answer key tomorrow.

1. Which one is not a main gland of the digestive system
1 point


Salivary gland

Liver

Pancreas

Adrenal gland
2.Salivary glands are present in-
1 point


Mouth

Oesophagus

Stomach

Small Intestine
3. Saliva breaks down
1 point


Starch

Fat

Glucose

Protein
4.The process of taking food into the body through mouth is called-
1 point


Digestion

Ingestion

Absorption

Assimilation
5.Teeth which help in biting and cutting of food are
1 point


Incisors

Canines

Premolars

Molars
6.Total number of canines present in human mouth
1 point


8

4

12

6
7.Which teeth are maximum in an adult human mouth
1 point


Incisors

Canines

Premolars

Molars
8. Oesophagus is also known as
1 point


Wind pipe

Blood pipe

Food pipe

Urine pipe
9. Largest gland in human body is
1 point


Liver

Pancreas

Salivary gland

Pituitary gland
10.All green plants are
1 point


Autotrophs

Heterotrophs

Parasites

Saprotrophs
11. Which one is NOT true about bile Juice ?
1 point


Liver secretes bile juice

Bile juice is secreted by gall bladder

Bile juice is stored in gall bladder

Bile juice helps in breakdown of fat
12.The inner walls of the small intestine have millions of small finger like projections called
1 point


Villi

Milli

Trachae

Hilly
13. Absorption of food takes place in the
1 point


Stomach

Large intestine

Oesophagus

Small intestine
14. Grass is rich in ................,a special kind of carbohydrate which can only be digested by ruminants.
1 point


Cellulose

Glucose

Fructose

Sucrose
15. Which of the following is a ruminant ?
1 point


Buffalow

Cow

Camel

Goat

All of the above
16. Which statement is wrong ?
1 point


Amoeba is a single celled organism

Amoeba is a multicellular organism

Amoeba is found in pond water

Amoeba capture its food with the help of pseudopodia
17. We perform starch test to study the effect of saliva on starch.When we put 2-3 drops of Iodine solution on boiled rice, they turn
1 point


Blue -orange

Blue Black

Red-white

Yellow -Green
18. Milk teeth fall off at the age between
1 point


6-8 years

2-4 years

10-12 years

12-14 years
19. Which of the following is false-
1 point


Tooth decay means gradual damage of teeth

Bacteria converts sugar to acid,acid is responsible for tooth decay

Chocolates,Sweets and soft drinks are good for teeth.

one should not put dirty fingers or any unwashed object in the mouth.

Option 5
20. Oral Rehydration Solution (ORS) is related with -
1 point


Diarrhoea

Constipation

Vomiting

Headache
21. In ruminants cellulose of the food is digested in-
1 point


Mouth

Caecum

Small intestine

Oesophagus
22. In Amoeba digestion of food occurs in-
1 point


Pseudopodia

Food vacuole

Contractile vacuole

Nucleus
23. What is the mode of feeding in butterfly ?
1 point


Chewing

Brewing

Scraping

Sucking
24. Which organ has taste buds to detect different tastes of food ?
1 point


Tongue

Teeth

Nose

Salivary glands
25. Which acid is secreted in the stomach
1 point


Hydrochloric acid

Acetic acid

Sulphuric acid

Citric acid

Answers:
1. d
2. a
3. a
4. b
5. a
6. b
7. d
8. c
9. a
10.a
11. b
12. a
13. d
14. a
15. e
16. b
17.b
18. a
19. b
20. a
21. b
22.b
23. d
24. a
25.a