chapter 21 worksheet

CLASS 5

SUBJECT- EVS

CHAPTER 21 (LIKE FATHER LIKE DAUGHTER)

WORKSHEET

Q1. FILL IN THE FOLLOWING BLANKS WITH THE CORRECT OPTION: --

Twins, identical, traits, legs, polio, inherited, hereditary, virus, environment

a.       Saroja and Suvasini are ____.                                                                                             (twins)                         

b.      We adopt many of the skills from our ____, whereas some are ______.                       (environment, inherited)

c.       Gregor Mandel explained _________ of the character using pea plants.            (traits)

d.      Polio is caused by ______.                                                                                              (virus)

e.      _____ are affected when a person suffers from polio.                                              (legs)

f.        Government has started programmes to eradicate ____ from its root.                 (polio)

g.       Two ____ twins look alike.                                                                                               (identical)

Q2. Answer the following questions very briefly: --

a.       What is pulse polio?

Ans: - Pulse polio is an immunization campaign established by the government to eradicate polio. 

b.      Who are called identical twins?

Ans: -The two people who are born together and look alike are called identical twins.

c.       Will two brothers brought up in different environment behave similar? Why or Why not?

Ans: - It is not necessary that the two brothers brought up in different environment behave similar because environment also affects the behavior of a person.

d.      Which part of the body is affected by polio? What causes polio?

Ans: - Legs are affected by polio. Polio is caused by virus.

e.      Who was Gregor Mendel? What did he use for his experiment?

Ans: - Gregor Mandel was a scientist, born in a poor farmer’s house.

He used pea plant for his experiment.

f.        Which are the traits that a person inherits? Write any three.

Ans: - The three traits which a person inherits are as follows:-

                                  I.            Sneezing.

                                II.            Walking and talking.

                              III.            Hair colour and texture.

                              IV.            Skin tone.

Q3.  Answer the following questions in detail: --

a.       How can we prevent polio? What steps has the government taken to eradicate polio?

Ans: - Polio can be prevented by taking polio vaccination. The government has started Pulse polio programme under which free polio vaccination is given to the children below 5 years of age.

b.      What did Gregor Mendel find about the pea plant?

Ans: - Grogor Mendel found that the pea plant has some traits which come in pairs. Like the seed is either rough or smooth. It is either yellow or green.

c.       How does an adopted child behave similar to his family members?

Ans: - A child learns many things from his present family environment.

d.      What is difference between Saroja and Suvasini? What are the similarities between the two

Ans: -The differences between Saroja and Suvasini are:-

SAROJA	SUVASINI
Saroja can sing songs in Marathi and Tamil languages,	Suvasini can perform karate well.
Saroja can speak Marathi and Tamil languages very well	Suvasini can speak Tamil only.

Similarities: - Saroja and Suhasini look alike i.e. they are identical twins.