TN 7th Science T1 - Health and Hygiene Important Questions And Answers Study Material - QB365 Set A

Download Tamil Nadu 7th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

Questions:

Multiple Choice Question

10 x 1 = 10

The first aid is to ________ .

(a)

Save money

(b)

Prevent scars

(c)

Prevent the medical care

(d)

Relieve the pain

Tobacco chewing causes ________ .

(a)

Anamia

(b)

Periodontitis

(c)

Tuberculosis

(d)

Pneumonia

Our living place should be ________ .

(a)

Open

(b)

Closed

(c)

Clean

(d)

Unclean / Untidy

Sleep is not only good for our body, but it is also good for ________ .

(a)

Enjoyment

(b)

Relaxation

(c)

Mind

(d)

Environment

Climbing roots are seen in ______.

(a)

Betel

(b)

Black pepper

(c)

Both of them

(d)

None of them

Which software is used to create symbols?

(a)

Photoshop

(b)

Illustrator

(c)

Vector Graphics

(d)

Photostory

Reproductive part of a plant is _________.

(a)

Root

(b)

Stem

(c)

Leaf

(d)

Flower

Which technology uses pixels to create pictures?

(a)

Vector

(b)

Raster

(c)

both

(d)

None

Who uses the Photoshop software more ?

(a)

Teacher

(b)

Doctor

(c)

Painter

(d)

Photographer

10.

Which of the following is an example for animation?

(a)

Sound communication

(b)

Visual communication

(c)

Vector communication

(d)

Raster communication

Generic 2

8 x 2 = 16

11.

What first aid will you provide in the case of bruises?

12.

Give any two communicable disease, which spreads in your locality during monsoon?

13.

What is hygiene?

14.

Write notes on 2D and 3D pictures.

15.

Give example for Corm and Tuber.

16.

What are the agents of pollination?

17.

Define – pollination.

18.

What are the two important parts of a flower?

Match the following

6 x 1 = 6

19.

Typhoid

20.

Rabies

21.

Hooks

22.

Petal

23.

Virtual Reality

24.

Raster

Fill in the blanks

6 x 1 = 6

25.

Tuberculosis is caused by the bacterium__________.

26.

Eyes are considered as ____ to the world.

27.

I am green colour box with garbage. I am ________

28.

Onion and Garlic are example of _______.

29.

Breathing roots are seen in _______ plants.

30.

The male reproductive part of a flower is ________.

True or False - If False Give The Reason

4 x 2 = 8

31.

First – degree burns damage the whole skin.

(a)

True

(b)

False

32.

All food should be covered.

(a)

True

(b)

False

33.

Ginger is an underground root.

(a)

True

(b)

False

34.

A complete flower has four whorls.

(a)

True

(b)

False

Generic 3

5 x 3 = 15

35.

Name the mode of transmission of communicable disease.

36.

Distinguish Communicable diseases and Non-communicable diseases

37.

What does this picture mean?

38.

Differentiate bisexual flower from unisexual flower?

39.

Differentiate between Raster and Vector images.

Generic 5

4 x 5 = 20

40.

How the disease are transmitted from one person to the other person?

41.

Write about any three Communicable diseases in details.

42.

Write a brief account on pollination.

43.

With the help of Microsoft Photostory how will you create a video?

Assertion and reason

1 x 2 = 2

44.

Assertion: Pollination and fertilization in flowers, produces fruits and seeds.
Reason: After fertilization the ovary becomes fruit and ovule becomes seed.
a. Assertion is correct, Reasoning is incorrect.
b. Assertion is incorrect, Reasoning is correct.
c. Assertion is correct, Reasoning is correct.
d. Assertion is incorrect, Reasoning is incorrect.

Picture Based Question

1 x 2 = 2

45.

Label the picture given below. Parts of a Flower

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Answers Key:

Multiple Choice Question

10 x 1 = 10

(d)
Relieve the pain

(b)
Periodontitis

(d)
Flower

(b)
Raster

(d)
Photographer

10.

(b)
Visual communication

Generic 2

8 x 2 = 16

11.

We have to wash by pure water and cleaned with antiseptic liquid.

12.

Cholera and Typhoid are communicable disease spread in my locality during monsoon.

13.

Hygiene refers to the good habits and the practices which is followed to prevent diseases, maintain good health, especially through cleanliness, consumption of safe drinking water and proper disposal of sewage.

14.

(i) The two dimensional (2D) images have only the two dimensions - length and height.
(ii) But three dimensional images (3D) have length, height and width. 3D images appear in front of our eyes like it happens in the real world.

15.

a) Corm - Colocasia
b) Tuber - Potato

16.

Insects, birds, animals, wind and water are the agents of pollination.

17.

The process by which pollen grains reach stigma is called as pollination.

18.

The important parts of flower is,
(i) Androecium (male reproductive part)
(ii) Gynoecium (female reproductive part)

Match the following

6 x 1 = 6

19.

Salmonella

20.

Hydrophobia

21.

Bignonia

22.

Attracts insect

23.

24.

Pixels

Fill in the blanks

6 x 1 = 6

25.

()
Mycobacterium tuberculae

26.

()
windows

27.

()
dustbin

28.

()
Bulb

29.

()
avicennia.

30.

()
Androecium

True or False - If False Give The Reason

4 x 2 = 8

31.

False.
Correct statement: First - degree burns affects the outer layer of the skin only.

32.

True

33.

False
Correct Statement : Ginger is underground stem.

34.

True

Generic 3

5 x 3 = 15

35.

Communicable diseases spread through contaminated air, water, food or vectors like insects and other animals.
i. Air - Tuberculosis ; Water - Cholera
ii. Insects - Dengue ; Animals - Plaque.

36.

S.No	Communicable diseases	Non Communicable diseases
1.	Communicable disease are those that spread from one person to another.	Non communicable disease do not spread from person to person
2.	Diseases spread through contaminated air, water, food or vectors. e.g Tuberculosis, Cholera.	They are caused by other factors except vectors. e.g Asthma, Xeropththalmia.

37.

i) This picture explains don't throw the waste in open place.
ii) If you throw it mosquito and other flies will be increase and it may leads to lot of diseases.

38.

Bisexual flower	Unisexual flower
A flower have both androecium and gynoecium is known as bisexual flowers.	A flower with androecium or gynoecium and without either androecium or gynoecium is known as unisexual flowers.

39.

Raster graphics	Vector graphics
Raster graphics are created on the basis of pixels. When we enlarge this type of photos we could see the pictures as rectangular layers or grids.	Vector graphics are created on the basis of mathematics, even when we enlarge the picture it's accuracy won't change.

Generic 5

4 x 5 = 20

40.

Disease are spread through air, water and some other organisms.
(i) Air = Spitting and coughing (Tuberculosis, chicken pox )
(ii) Contaminated waer = Drinking and cleaning by using unboiled water ( Cholera, Hepatitis).
(iii) Insects = Biting of infected insects like mosquito and flies. Dengue, Typhoid)
(iv) Animals = Through biting of in affected animals like dog, rabbit, cat etc,(Rabies).

41.

Tuberculosis:
(i) Causative agent : Mycobacterium tuberculae bacteria.
(ii) Transmission : Spread from one person to another through air by spitting and prolonged contact with patient.
(iii) Symptoms : Fever, weight loss, chronic cough, bloody spitting and difficulty in breathing
(iv) Prevention and treatment : BCG vaccinations. Giving special attention to the patient. Regular medication like DOT
Chicken pox:
(i) Causative agent : varicella zoster virus.
(ii) Transmission : Spread through air and contact with infected person.
(iii) Symptoms : Appearance of rashes on the whole body, fever, headache and tiredness.
(iv) Prevention and treatment : Chicken pox vaccine is the best way to prevent. Special attention should be given to infected person
Robies:
(i) Causative agent: Virus (rhabdo virus)
(ii) Transmission : By the bite of the infected dog, cat, etc.
(iii) Symptoms: Hydrophobia, fever for 2-12 weeks and exaggerations
(iv) Prevention and treatment : Fatality can be prevented by timely vaccination before onset of symptoms.

42.

The process by which pollen grains reach stigma of the flower is called as pollination. Pollination can be classified into two types based on their mode of transmission.
i) Artificial pollination:
The transfer of pollen grains from anther to stigma by manually is called as artificial pollination
ii) Natural Pollination:
1) The transfer of pollen grains from anther to stigma by insect or any other natural sources is called as natural pollination.
2) Pollination can be classified into another two types based on their site of transmission
i) Self pollination:
Pollen grains are transferred from the anther to the stigma of the same flower or to another flower of the same plant is known as self pollination.
ii) Cross pollination:
Pollen grains are transferred from the anther of one flower to the stigma of another flower of the same kind or different plant known as cross pollination.

43.

Step 1: Open the application of 'Microsoft Photostory'. In that select "Begin A New Story" and click on Next.
Step 2: Click "Import Picture" in the next screen. Select 'Saved pictures' for video. If required, We can edit the image and click on Next.
Step 3: Now we can input small text, animation, audio effect for the picture then click Next.
Step 4: To provide background music, we can select a music file through "Select Music" and click on Next.
Step 5: select a title for the story, then through SETTINGS change the format of the video.
Step 6: Now our video is ready to view. Click "VIEW YOUR STORY". You can see your video now.

Assertion and reason

1 x 2 = 2

44.

Picture Based Question

1 x 2 = 2

45.