Advertisements
Advertisements
प्रश्न
Would a Planaria cut vertically into two halves regenerate into two individuals? Complete Figure D and E by indicating the regenerated regions.
 |
 |
 |
 |
 |
| A | B | C | D | E |
Advertisements
उत्तर
Yes, a Planaria would regenerate into two individuals if cut vertically into two halves.
The regenerated regions in D and E are shown by shaded parts below.
 |
 |
| D | E |
APPEARS IN
संबंधित प्रश्न
Reproductive and Child Healthcare (RCH) programmes are currently in operation. One of the major tasks of these programmes is to create awareness amongst people about the wide range of reproduction related aspects. As this is important and essential for building a reproductively healthy society.
- “Providing sex education in schools in one of the ways to meet this goal.” Give four points in support of your opinion regarding this statement.
- List any two ‘indicators’ that indicate a reproductively healthy society.
Do you think that reproductive health in our country has improved in the past 50 years? If yes, mention some such areas of improvement.
What is amniocentesis and why there is a statutory ban on it?
What does IUCD indicate?
Write the full form of the following as it occur in biology :
STD
Name one sexually transmitted disease for which no definite cure has been found so far. What is the causative organism of this disease?
Name the contraceptive device used by human females which is put over the cervix.
One of the following is a surgical method which prevents the sperms from reaching the ovum and pregnancy does not occur. This method is :
(a) IUCD
(b) vasectomy
(c) condom
(d) tubectomy
In the surgical method of birth control available for males, the structures A in the reproductive system are cut and ligated (tied up) at both ends. This prevents the reproductive cells B from coming out from the organs C where they are made in the male body. Since B cannot come out from the male body, they cannot fuse with cell D in the body of a female and hence pregnancy is prevented.
(a) What are structures A?
(b) What are cells B?
(c) Name the organs C.
(d) What is cell D?
(e) What is the name of this surgical procedure for birth control available to males?
The human males use a device X made of a very thin rubber sheet as a covering on the male organ to prevent pregnancy. This device traps the gametes Y in it. In order to prevent pregnancy, the human females use a device Z which is a circle of rubber with a metal spring around it. The device Z is put inside the vagina to cover the cervix. It stops Y from going into the uterus.
(a) What is device X?
(b) What are Y?
(c) Name the device Z.
(d) What is the general name of these methods of birth control (or preventing pregnancy)?
(e) The use of which contraceptive device, X or Z, can protect the persons from sexually transmitted diseases?
What are Sexually Transitted Diseases (STD)? List two viral and two bacterial STDs.
Give the role of amniocentesis.
Which one amongst the following is the first country in the world to initiate action plans and programmes at a national level to attain total reproductive health as social goal?
The period of pregnancy is called ______
Why does bread mould grow profusely on a moist slice of bread rather than on a dry slice of bread?
Select the statement(s) that relate to reproductive health:
Select the statement which is not correct about reproductive health?
State one drawback of the following:
Oral contraceptive pills
What are the statutory minimum ages for marriage strictly enforced for females and males, respectively?
In the context of reproductive health, infertility is clinically defined as:
