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प्रश्न
Name the two types of twins.
Give the names:
Types of twins.
Name the following:
Two types of twins.
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उत्तर १
Monozygotic twins and Dizygotic twins
उत्तर २
Identical twins and Fraternal twins
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संबंधित प्रश्न
Identify True/False statement. Correct false statement to make it true.
Presence or absence of hymen is not a reliable indicator of virginity or sexual experience.
Where in the fallopian tube does fertilization occur in humans?
In female, after how much time after fertilization, does the fertilized egg get implanted in the
uterine wall?
The following diagram represents the vertical sectional view of the human female reproductive system.
Label the parts indicated by the guidelines 1 to 8.
Mention the exact location of the following :
Corpus callosum
The diagram alongside is the vertical section of female reproductive organs. Study the diagram and answer the questions that follow:
- Name the fully developed part of ovary containing the ovum.
- Name the organ of the female body in which the foetus develops.
- What is ovulation?
- Which two hormones are secreted by ovary?
Give the functions of the following:
Penis
Explain the term Graffian follicle.
Name the Following
The term used for the mature follicles.
Write the functional activity of the following structure:
Ovary
Multiple Choice Question:
Corpus luteum in mammals occurs in
Name the part of the human female reproductive system where the following occurs.
Fertilization
Womb is used to refer ______.
The pair of thin folds present inner to the labia majora is ____________.
Read the following and answer from given below:
During copulation, semen is released by the penis into the vegina. The motile sperms swim rapidly, fuse with the ovum in the ampullary region, resulting in fertilization. The haploid nucleus of sperm fuses with that of the ovum to form a diploid zygote.
Select the correct sequence of various physical and chemical events that take place during fertilisation.
P. Fusion of cortical granules with the plasma membrane of secondary oocyte.
Q. Formation of fertilization cone to receive sperm.
R. Release of sperm lysin from acrosome.
S. Mixing up of chromosomes of a sperm and an ovum.
Read the following and answer from given below:
During copulation, semen is released by the penis into the vegina. The motile sperms swim rapidly, fuse with the ovum in the ampullary region, resulting in fertilization. The haploid nucleus of sperm fuses with that of the ovum to form a diploid zygote.
What is the signifacance of fertilisation?
Read the following and answer from given below:
During copulation, semen is released by the penis into the vegina. The motile sperms swim rapidly, fuse with the ovum in the ampullary region, resulting in fertilization. The haploid nucleus of sperm fuses with that of the ovum to form a diploid zygote.
Site of fertilization in human is ______
What is placenta? Mention its role during pregnancy?
How does fertilisation take place? Fertilisation occurs once in a month. Comment.
Match the following:
| Ovaries | Bean shape |
| Fallopian tubes | Almond shape |
| Uterus | Funnel – shape |
| Kidney | pear-shaped |
With a suitable diagram, describe the organisation of mammary gland.
Give reason:
Uterine lining becomes thick and spongy after fertilisation.
The ______ is also called the womb.
The ______ is also called the womb.
Given below is a group of terms. In the group, one pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.
Leydig cells : Testosterone : ______ : Oestrogen.
Choose the odd one out from the group of terms given below and write the category for the remaining terms:
Distinguish between the following pair:
Spermatogenesis and oogenesis
What are the clusters of milk-secreting cells within mammary lobes called?
What is formed when tubules of each mammary lobe join?
