Find the Second Year Biology Chapter 18 Short Questions Online Preparation (Reproduction)

Question # 1

Give the role of oxytocin.

Ans 1: Oxytocin of ovum from the ovary is called ovulation

Question # 2

Write about the Gonorrhoea disease.

Ans 1: it is caused by gram positive bacteria Neisseria gonorrhoeae mainly affecting the mucous membrane of urinogenital tract. New borne infants may acquire serious eye infection if they pass through the infected birth canal. It is highly contagious through the sexual contact.

Question # 3

Write about the disease syphilis? Or Give causes and symptoms of syphilis?

Ans 1: It is caused by a spirochete, Treponema pallidum. It damages the reproductive organs,eyes,bones,joints,CNS,heart and skin. Sexual contact is major source of its spread.

Question # 4

Define seed dormancy. Write its signifance. Give Its importance.

Ans 1: it is special condition of rest, which enables an embryo to survive the unfavorable environmental conditions.
Ans 2: Its importance is that during this period of rest the embryo ceases its growth.
Ans 3: This is of great survival importance to the plant in that it prevents the dormant seeds from germinating in response to condition such as long spell of warmth in winter.

Question # 5

Give importance of photoperiodism in plants.

Ans 1: Photoperiodism plays an important role in flowering of plants in long and short day plants.

Question # 6

What is genital herpes?

Ans 1: It is caused by herpes simplex type 2 virus, most frequently transmitted by sexual contact causing infection of the genitalia. It produces genital sorness and ulcers in the infected areas. In infected pregnant women,virus can transmitted to infant during birth,causing damage to eyes and CNS of the infant.

Question # 7

Define gonorrhea and AIDS.

Ans 1: Gonorrhea is caused by gram positive bacteria called Neisseria gonorrhoeae,mainly affecting the mucous membrane of urinogenital tract. New born infants may acquire serious eye infection if they pass through infected birth canal. It is highly contagious through sexual contact.
Ans 2: AIDS:It is caused by AIDS virus (acquired immune deficiency virus) mainly destroy the WBCs (Iymphocytes) so immune system becomes weak. It is also transmitted from infected person through sexual contact.

Question # 8

Enlist methods of asexual reproduction.

Ans 1: Types of asexual reproduction are:-
Ans 2: a) Budding b) Parthenogenesis c) Cloning d) Tissue culture e) Apomixes f) Sporulation g) Vegetative propagation h) Artificial propagation

Question # 9

What is oestrous cycle?

Ans 1: Oestrous cycle is a reproductive cycle found in all female mammals except human female. In this cycle, the estrogen production prepares the uterus for conception partly and also follicle develops ova.At this stage female needs a physical stimulus of mating for ovulation. She exhibits a desire for mating or is said to be on heat.

Question # 10

Define phytochromes and give its types.

Ans 1: Phytochromes are blue light sensitive proteins which receives the stimulus for flowering. They are of two type i.e, P₆₆₀or red phytochrome and P_{730 or far red phytochrome.}

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Second Year Biology Chapter 18 Short Questions Online Preparation (Reproduction)

Online Short Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "

Biology - 12th Class Biology Chapter 18 Short Questions Preparation

Give the role of oxytocin.

Write about the Gonorrhoea disease.

Write about the disease syphilis? Or Give causes and symptoms of syphilis?

Define seed dormancy. Write its signifance. Give Its importance.

Give importance of photoperiodism in plants.

What is genital herpes?

Define gonorrhea and AIDS.

Enlist methods of asexual reproduction.

What is oestrous cycle?

Define phytochromes and give its types.

Prepare Complete Set Wise Questions For Chapter 4 "12th Class Biology Chapter 18 Short Questions Preparation "

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

12th Class Biology Chapter 18 Short Questions Preparation - Set 1

Give the role of oxytocin.

Write about the Gonorrhoea disease.

Write about the disease syphilis? Or Give causes and symptoms of syphilis?

Define seed dormancy. Write its signifance. Give Its importance.

Give importance of photoperiodism in plants.

What is genital herpes?

Define gonorrhea and AIDS.

Enlist methods of asexual reproduction.

What is oestrous cycle?

Define phytochromes and give its types.

12th Class Biology Chapter 18 Short Questions Preparation - Set 2

Give the function of interstitial cells of testis.

Write about the Gonorrhoea disease.

Distinguish between vernalization and seed dormancy.

Define seed dormancy. Write its signifance. Give Its importance.

Define vernalisation. Give its one importance.

Name various parts of male reproductive system in male.

Differentiate identical twins and triplets.

What is the role of P730 phytochrome in flowering?

Differentiate between parthenocarpy and apomixes.

Define placenta. Give its function.

12th Class Biology Chapter 18 Short Questions Preparation - Set 3

Distinguish between vernalization and seed dormancy.

What is diplohaplontic life cycle? Give its types.

Give two examples of short day plants.

Differentiate between tissue culture and cloning.

Define haploid parthenogenesis.

What is Gonorrhoa and who caused it?

What are advantage of cloning?

Define placenta. Give its function.

What is the role of P730 phytochrome in flowering?

What are advantages of cloning?

12th Class Biology Chapter 18 Short Questions Preparation - Set 4

Name the hormones that stimulate mammary glands for lactation.

Define parthenocarpy with example.

Differentiate the internal and external fertilization.

Give the role of oxytocin.

What is oestrous cycle?

What is role of progestrone in pregnancy?

Define vernalisation. Give its one importance.

What is the role of P730 phytochrome in flowering?

Define haploid parthenogenesis.

Define gonorrhea and AIDS.

12th Class Biology Chapter 18 Short Questions Preparation - Set 5

Differentiate between tissue culture and cloning.

Give the role of oxytocin.

Define photoperiodism.

Define fruit.

Name the hormones secreted by placenta.

What is Gonorrhoa and who caused it?

Define reproduction.What is its significance?

Differentiate identical twins and triplets.

What is the role of P₇₃₀phytochrome in flowering?

What is the role of P₇₃₀phytochrome in flowering?

What is the role of P₇₃₀phytochrome in flowering?