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

Question # 1

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 # 2

Apomixes is a form of parthenogenesis.Discuss

Ans 1: In apomixes a diploid cell either from the nucellus or megaspore develops into a functional embryo in the absence of a male gamete. The rest of the ovule develops into seed and and ovary into fruit.
Ans 2: Parthenogenesis: Development of an egg without fertilization

Question # 3

How Implantation differes from gestation?

Ans 1: Implantation: Implantation is when the new human created at fertilization implants in the uterus. The newly created offspring,technically referred to as a blastocyst,travels to the uterus through the fallopian tube and implants in the wall of the uterus.
Ans 2: Gestation: Gestation means carrying the embryo inside the females uterus.
It is the time period from conception to birth of the child.

Question # 4

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 # 5

Differentiate between oviparous and viviparous.

Ans 1: Oviparous: Oviparous are the eggs laying animals like birds.
Ans 2: viviparous: Viviparous are those animals which give birth to their young ones like mammals

Question # 6

What is difference between oogenesis and spermetogensis in humans?

Ans 1: Oogenesis: In oogenesis, primary oocytes divide meiotically in to secondary oocytes and first polar body. Second meiotic division in the oocytes proceeds as far as metaphase but is not complete until the oocyte is fertilized by the sperm.
Ans 2: Spermatogenesis: during spermatogenesis primary spermatocytes under go meiotic division to form four secondary spermatocytes and spermatids which then differentiated into four mature sperms.

Question # 7

State two methods of asexual reproduction in animals.

Ans 1: Binary fission is a method of asexual reproduction in which animals like amoeba. During binary fission nucleus elongates and then divides into two nuclei, at the same time cytoplasm divides and two daughter cells are formed.
Ans 2: Regeneration is another method of asexual reproduction in which missing part of the body which is separated from the main body part develops into a complete organism.

Question # 8

Give two disadvantages of cloning.

Ans 1: The entire organism produced by cloning are identical to each other and no genetic variability is produced.
Ans 2: All the organism will not show any resistant to disease if it outbreaks and all the generation will be died.

Question # 9

Give the role of oxytocin.

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

Question # 10

Differentiate the internal and external fertilization.

Ans 1: External Fertilization:Fertilization which occurs outside the body is know as external fertilization.
It occurs aquatic environment where male gametes can swin towards females gametes in water medium.
Ans 2: Internal Fertilization: Fertilization which occurs inside the body of organisms is known as internal fertilization.
Sperms are lodged in the female body where fertilization occurs.

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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

Differentiate between lactation and gestation.

Apomixes is a form of parthenogenesis.Discuss

How Implantation differes from gestation?

Define fruit.

Differentiate between oviparous and viviparous.

What is difference between oogenesis and spermetogensis in humans?

State two methods of asexual reproduction in animals.

Give two disadvantages of cloning.

Give the role of oxytocin.

Differentiate the internal and external fertilization.

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

Differentiate between lactation and gestation.

Apomixes is a form of parthenogenesis.Discuss

How Implantation differes from gestation?

Define fruit.

Differentiate between oviparous and viviparous.

What is difference between oogenesis and spermetogensis in humans?

State two methods of asexual reproduction in animals.

Give two disadvantages of cloning.

Give the role of oxytocin.

Differentiate the internal and external fertilization.

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

What are phytochromes?

Define phytochromes and give its types.

What is menopause? Which factors affect reproductive cycle in female?

Differentiate between tissue culture and cloning.

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

How oestrous cycle different from menstrual cycle?

What is role of progestrone in pregnancy?

What are advantages of cloning?

Give two examples of short day plants.

What is seed dormancy?

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

Apomixes is a form of parthenogenesis.Discuss

How Implantation differes from gestation?

Give two examples of short day plants.

What is vernalization?

Differentiate between lactation and gestation.

Give importance of photoperiodism in plants.

What is Follicle atresia?

Define vernalization.

Differentiate between parthenocarpy and apomixes.

What are functions of sertoli cells?

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

Give two disadvantages of cloning.

What is menopause?At which age it starts.

What is diplohaplontic life cycle? Give its types.

Define placenta. Give its function.

What is after birth? Or What is meant by after birth?

Define parthenocarpy with example.

What are advantage of cloning?

Define fruit set.

What are Ovoviviparous?

Define gonorrhea and AIDS.

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

Define fruit set.

Name the hormones secreted by placenta.

Define reproduction.What is its significance?

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

What is after birth? Or What is meant by after birth?

Define terms menstruation and menopause.

Differentiate between tissue culture and cloning.

Why seed plants are predominantly present all around as?