Advertisements
Advertisements
प्रश्न
Implantation of embryo occurs in ______.
Advertisements
उत्तर
Implantation of embryo occurs in uterus.
Explanation:
After fertilization, the zygote divides repeatedly to form an embryo. The embryo then reaches the uterus and attaches itself to its thick, vascular inner lining (endometrium). This attachment of the embryo to the uterine wall is called implantation.
APPEARS IN
संबंधित प्रश्न
Women are often blamed for producing female children. Consequently, they are ill-treated and ostracized. How will you address this issue scientifically if you were to conduct an awareness programme to highlight the values involved?
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
Define spermiation.
Draw a labelled diagram of sperm.
Identify True/False statement. Correct the false statement to make it true.
Oogenesis takes place in the corpus luteum.
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
Identify the labels (i-iv) in the given diagram of the ovum.
500 spermatozoa are formed from ____________ secondary spermatocytes.
Calculate the number of sperms and ova produced from 40 primary spermatocytes and 40 primary oocytes.
Which of the following is diploid?
______ undergoes 2nd meiotic division during spermatogenesis.
Which of the following events take place during spermatogenesis?
Select the pair of cells which does not divide further by mitosis.
Identify the wrong statement from the following.
After the release of the secondary oocyte, the Graafian follicle develops into ______.
Capacitation refers to changes in the ______.
Match List - I with List - IІ.
| List - I | List - II |
| A. Head | I. Enzymes |
| B. Middle piece | II. Sperm motility |
| C. Acrosome | ΙII. Energy |
| D. Tail | IV. Genetic material |
Choose the correct answer from the options given below:
During oogenesis the meiotic division is arrested at ______ before fertilization.
Complete the analogy with respect to the structure of sperm.
Nebenkern : ‘X’ : : Acrosome is formed from : ‘Y’
