Tag: reproduction

Questions Related to reproduction

Which one is correct regarding sexually transmitted diseases (STD)?

sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. Haemophilia is one of the STD

  2. Genital herpes and sickle cell anaemia are both STD

  3. Chances of a five years old boy contracting a STD are very little

  4. A person may contract syphilis by sharing milk with one already suffering from disease

Show answer
Correct Option: C
Explanation:

Sexually transmitted infections are more common in 15-24 years age group. Gonorrhoea, syphilis, genital herpes, chlamydiasis, genital warts, trichomoniasis, hepatitis-B and AIDS are some of the common STDs. Haemophilia is sex-linked recessive disease, which show its transmission from unaffected carrier female to some of male progeny. Sickle cell anaemia is an autoimmune linked recessive trait in which both the partners are carrier for the gene

So, the correct answer is 'Chances of a five years old boy contracting a STD are very little',

Which is not a sexually transmitted disease?

sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. Genital warts

  2. Trichomoniasis

  3. Chlamydiasis

  4. Syphilis

  5. Myasthenia gravis

Show answer
Correct Option: E
Explanation:

Diseases or infections which are transmitted through sexual intercourse with infected persons are collectively called sexually transmitted diseases(STDs).

Examples- HIV leading AIDS, gonorrhoea, Syphilis, Chlamydiasis, Genital herpes, Genital warts, Hepatitis-B, Trichomonasis, Enterobiasis, Scabies, Candidiasis.
Myasthenia gravis is a chronic autoimmune neuromuscular disease that causes weakness in the skeletal muscles, which are responsible for breathing and moving parts of the body, including the arms and legs. In this condition, antibodies, which are proteins that normally attack foreign, harmful substances in the body, attack the neuromuscular junction.
So, the corrrect answer is 'Myasthenia gravis'.

Which one is a sex-related disease?

sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. Christmas disease

  2. Klinefelter's syndrome

  3. Phenylketonuria

  4. Albinism

Show answer
Correct Option: A
Explanation:
In haemophilia, the blood does not clot as it should. Haemophilia is normally an inherited disorder. It happens because of a defect in one of the clotting factor genes on the X chromosome. Haemophilia tends to occur in males since the gene can be passed from mother to son. Males typically lack a second X chromosome so they are unable to make up for the defective gene. Most females have XX sex chromosomes while most males have XY sex chromosomes.
Haemophilia B, also known as "Christmas disease," occurs when a person lacks clotting factor IX.
So, the correct answer is 'Christmas disease'.

Assertion:  Males suffer from sex-linked disorders more often than females.

Reason: Sex-linked traits are mostly governed by recessive genes.

sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: A

which is STD ?

sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. Cancer

  2. Trichomoniasis

  3. Pneumonia

  4. Malaria

Show answer
Correct Option: B
Explanation:
Trichomoniasis is a sexually transmitted disease caused by Trichomonas vaginalis
Pneumonia is caused by bacteria
Cancer - uncontrolled cell division, while Malaria is a protozoan disease
So, the correct answer is 'Trichomoniasis'

Which one of the following groups includes all sexually transmitted disease?

sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. AIDS, Syphilis, Cholera

  2. HIV, Malaria, Trichomoniasis

  3. Gonorrhoea, Hepatitis- B, Chlamydiasis

  4. Hepatitis-B, Haemophilia, AIDS

Show answer
Correct Option: C
Explanation:

All of the diseases like AIDS, Gonorrhoea, hepatitis- B, chlamydiosis, and syphilis are sexually transmitted diseases. While cholera, malaria, hemophilia are water-borne, parasitic and Mendelian disorders respectively.

So the correct option is 'Gonorrhoea, hepatitis- B, chlamydiasis'.

The symptom of hepatitis B is 

sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. Fatigue

  2. Brownish urine

  3. Jaundice

  4. All of the above

Show answer
Correct Option: D
Explanation:

Hepatitis B or HBV can cause yellowing of skin & eyes, jaundice, dark urine, abdominal pain & in severe cases, liver failure. 

So the correct option is 'All of the above'.

A farmer introduced garden lizards into his agricultural fields to eradicate insects. This method is

sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. Environmental ethic method

  2. Biological control method

  3. Bio accumulation method

  4. Bio magnification method

Show answer
Correct Option: B
Explanation:

There are different forms of pest control methods for the elimination of the insects and pests. If a farmer introduces the organisms or pests which can act on the other harmful pests, known as the biological control method. This method involves the use of living organisms for the eradication of the insects in the farm which destroy the crops. The lizards feed on the insects and protect the crops. 

Thus, the correct answer is option B. 

Assertion : Chlamydiosis is most common bacterial sexually transmitted disease. 
Reason : It can be easily differentiated from gonococcal urethritis. 
sexually transmitted diseases stds and infertility reproductive health reproduction biology

  1. Both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion.

  2. Both the Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.

  3. The Assertion is true but the Reason is false.

  4. Both the Assertion and Reason are false.

  5. The Assertion is false but Reason is true.

Show answer
Correct Option: C
Explanation:

Chlamydiosis or Chlamydia infection is the most commonly sexually transmitted disease and affects the human genital organs. This is caused by the bacterium Chlamydia trachomatis. Gonorrhea or gonococcal urethritis, is a sexually transmitted infection found in men and is caused by the bacterium Neisseria gonorrhoeae and this infection do not show much difference from that caused by Chlamydia trachomatis in men. 

Hence, the correct answer is option C.

Which of the following statements is correct for the pollen tube 

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  1. It shows chemotactic movement

  2. It shows only tip growth

  3. It is composed of three non-cellular zones

  4. It shows radial cytoplasmic streaming

Show answer
Correct Option: A
Explanation:

The movement of pollen tube towards embryosac though style is chemotactic as it secrets pectinases and other hydrolytic enzymes to create a passage for its entry into style .