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

Question # 1

Give the function of interstitial cells of testis.

Ans 1: Interstitial cells produce testosterone. This hormone is essential for the successful production of sperms.

Question # 2

Define terms menstruation and menopause.

Ans 1: Menstrual cycle:In human females the periodic reproductive cycle is completed in approximately 28 days and involves changes in the structure and function of the whole reproductive system. It is called menstrual cycle.
Ans 2: Menopause:The end or complete stop of menstrual cycle is called menopause

Question # 3

What is corpus luteum? Give its function.

Ans 1: The follicle cells after release of the egg are modified to from a special structure called corpus leuteum. It produces progesterone.

Question # 4

How seedless fruit are formed?

Ans 1: Seedless fruit are also called parthenocapic fruits they formed without fertilization. It may be formed naturally as in banana and may formed artificially like seedless grapes.

Question # 5

Define fruit.

Ans 1: Ripened ovary is called fruit. After the fertilization the cells of ovary wall starts to divide and it develops into complete fruit.

Question # 6

What is vernalization?

Ans 1: Biennials and perennials plants are stimulated to flower by exposure to low temperature. This is called vernalization. Duration of low temperature (chilling) treatment required varies from four days to three months.Temperature around 4^oC is found to be very effective.

Question # 7

What are advantage of cloning?

Ans 1: Cloning has the advantage that all the offspring behave similarly.
Ans 2: All the members of a clone have similar feature like their parent.

Question # 8

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 # 9

Differentiate between lactation and gestation.

Ans 1: Lactation: Lactation means discharge or production of milk from the mammary gland after child birth.
Ans 2: Gestation: Gestation is the total time period of pregnancy is called gestation. In human gestation period is of nine months.

Question # 10

Differentiate between isomorphic and heteromorphic generation.

Ans 1: Isomorphic:If gemetophtye and sporophyte generation are vegetatively and morphologically similar then they are called isomorphic generation.
Ans 2: Heteromorphic: Ifgametophyte and sporophyte generations are vegetatively and morphologically dissimilar then they are called heteromorphic generations

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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 function of interstitial cells of testis.

Define terms menstruation and menopause.

What is corpus luteum? Give its function.

How seedless fruit are formed?

Define fruit.

What is vernalization?

What are advantage of cloning?

Define gonorrhea and AIDS.

Differentiate between lactation and gestation.

Differentiate between isomorphic and heteromorphic generation.

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 function of interstitial cells of testis.

Define terms menstruation and menopause.

What is corpus luteum? Give its function.

How seedless fruit are formed?

Define fruit.

What is vernalization?

What are advantage of cloning?

Define gonorrhea and AIDS.

Differentiate between lactation and gestation.

Differentiate between isomorphic and heteromorphic generation.

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

Name two sexually transmitted disease and their control.

Apomixes is a form of parthenogenesis.Discuss

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

Write about the Gonorrhoea disease.

Name the hormones secreted by placenta.

What are test tube babies?

Define fruit set.

What are advantages of cloning?

What is diploid parthenogenesis?

Define vernalisation. Give its one importance.

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

Define terms menstruation and menopause.

What is seed dormancy?

Define photoperiodism.

For which the abbreviation of STD is used?

Define phytochromes and give its types.

What is Follicle atresia?

What are functions of sertoli cells?

Give two examples of short day plants.

Define haploid parthenogenesis.

How Implantation differes from gestation?

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

Define parthenocarpy with example.

What is the role of P730 phytochrome in flowering?

What is seed dormancy?

Differentiate between lactation and gestation.

What is oestrous cycle?

State two methods of asexual reproduction in animals.

What is Gonorrhoa and who caused it?

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

Differentiate identical twins and triplets.

What are Ovoviviparous?

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

Name the hormones secreted by placenta.

Define Ovulation.

What are advantage of cloning?

Define fruit set.

What is difference between oogenesis and spermetogensis in humans?

What is genital herpes?

Name two sexually transmitted disease and their control.

Give two examples of short day plants.

What is the role of P₇₃₀phytochrome in flowering?