Home
Class 12
BIOLOGY
Read the following statements and select...

Read the following statements and select the option having both incorrect statements
(i) Condoms decrease sperm motility
(ii) Diaphragms, cervical caps and vaults are for both males and females
(iii) IUDs are inserted by expert nurses
(iv) Sterilisation is a terminal method to prevent further pregnancy.

A

(i) and (iii)

B

(i) and (ii)

C

(iii) nad (iv)

D

(ii) and (iv)

Text Solution

Verified by Experts

The correct Answer is:
B
Condom, made of thin rubber or latex, is used to cover the penis in the male just before coitus so that ejaculated semen (sperms) does not enter into the female reproductive tract. Diaphragms cervical caps and vaults are also made of rubber and are inserted into the female reproductive tract to cover the cervix during coitus. Thet prevent conception by blocking the entry of sperms through the cervix.
Promotional Banner

Similar Questions

Explore conceptually related problems

Read the given statements and select the correct option Statement 1 : Diaphragms, cervical caps and vaults are made of rubber and are inserted into the female reproductive tract to cover the cervix before coitus Statement 2 : These are chemical barrier of conception which are reusable

Read the given statements and select the correct option. Statement 1: Diaphragms, cervical caps and vaults are made of rubber and are inserted into the female reproductive tract to cover the cervix before coitus. Statement 2: They are chemical barriers of conception and are reusable.

Read the following statements and select the option which identifies the incorrect ones. (i) Potato spindle tuber disease and Chrysanthermum stunt disease are caused by viroids. (ii) T_(4) bacteriophage exhibits lytic cycle. (iii) Retroviruses have two copies of ssRNA. (iv) Interferous which prevent viral multiplication are glycolipid particles.

Read the following statements and select the correct option (i) Blood cells secrete fibres of structural proteins called collagen and elastin (ii) Neuroglial cells protect and support the nephrons (iii) Osteocytes are present in spaces called lacunae (iv) Striated muscle fibres are bundled together in a parallel fashion (v) Biceps are involuntary and striated.

Consider the following statements and select the option stating which ones are true (T) and which ones are false (F) (i) There are many side effects of tubectomy and vasectomy (ii) Purpose of tubectomy is to prevent egg formation (iii) Contraceptive oral pills help in birth control by preventing ovulation (iv) Gential warts is a sexually transmitted disease caused by herpes virus (v) In India, there is rapid decline in infant mortality rate adn MMR.

Read the following statements and select the incorrect ones. (i) When the transformed cells on agar plates containing ampicillin are spread, both transformed and untransformed cells will grow. (ii) Restriction enzymes are used in isolation and separation of DNA from other macromolecules. (iii) Downstream processing is one of the steps of rDNA technology. (iv) Disarmed pathogen vectors are also used in transfer of rDNA into the host. a) (i) and (iii) b) (iii) and (iv) c) (i) and (iii) d) (i) and (ii)

Consider the following statements and select the option stating which ones are true (T) and which ones are false (F) (i) Abortions could happen spontaneously too (ii) Infertility is the ibability to produce viable offspring due to defects in the female partner only. (iii) Complete lactation could help in contraception (iv) Creating awareness can help create a reproductively healthy society.

Read the following statements regarding spleen and select the correct option. (i) Spleen is a large oval-shaped organ which mainly contains lymphocytes and phagocytes. (ii) Spleen is a large reservoir of erythrocytes. (iii) Spleen is a primary lymphoid organ. (iv) spleen acts as a filter of the blood by trapping blood-borne microorganisms.

Following are given four statements (i)- (iv) related to frog. Read the statement carefully and select the option that identifies two correct statements. (i) The brain in divided into fore-brain, mid-brain and hind-brain (ii) Vasa efferentia enter the kidneys on their side and open into Bidder's canal (iii) Ear acts as a hearing organ only (iv) RBCs are enucleated and contain red coloured pigment namely haemoglobin