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प्रश्न
Write two major functions of ovary.
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उत्तर
- They produce female gametes called ova by the process of oogenesis.
- The growing Graafian follicles secrete the female sex hormone called estrogen. Estrogen aids the development of secondary sex characteristics in females.
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संबंधित प्रश्न
Draw a diagrammatic sectional view of the female reproductive system of human and label the parts
(i) where the secondary oocytes develop
(ii) which helps in collection of ovum after ovulation
(iii) where fertilization occurs
(iv) where implantation of embryo occurs.
Put a tick mark (✓) against the correct alternative in the following statement:
Internally, the uterus opens into:
Fill in the blank:
Lower part of uterus is called _________.
Fill in the blank:
The time between fertilisation and birth is called _________.
What is hymne?
Give appropriate term of the following:
The rupture of follicle and release of ovum from the ovary.
Give Reasons
Most often only one embryo is formed at a time although there are two ovaries in women. Explain.
The below diagram represents the sectional view of the female reproductive organs of a mammal.
(i) Label the parts numbered 1 to 7.
(ii) What are the main functions of the parts labeled 2, 5, 6?
Complete the following sentences with appropriate word:
The female equivalent of the penis is the _______.
State the Location:
Ovary
State the Location:
Bartholin’s glands.
After fertilization the ovary develops into ______.
The stalk of the ovule is called a pedicle.
Identify the term used for isthmus.
______ pollen mother cells should undergo meiotic division to produce 64 pollen grains.
______ is homologous to Bartholin's glands.
Identify the labels (i, ii and iii) in the given diagram of the female reproductive system.
Which of the following is a finger like structure and lies at the upper junction of the two labia minora above the urethral opening?
Which part of ovary in mammals acts as an endocrine gland after ovulation?
The finger-like projections, called fimbriae, help in the collection of ovum into the fallopian tube following ovulation.
To answer the question, study the graphs below for Subjects 1 and 2 showing different levels of certain hormones.
Which of the following statements is true about the subjects?
The embryo in humans gets nutrition from the mother’s blood with the help of a special tissue called ______
The fertilization of the human egg by the sperm takes place in ______
Where does fertilization take place?
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.
In the female genital tract, sperms are made capable of fertilizing the egg. This phenomenon of sperm activation is called ______
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Identify the functions of LH.
- Release of a secondary oocyte from Graafian follicle.
- Stimulates corpus luteum to secrete progesterone.
- Stimulates estrogen formation.
- Promotes development of egg to form secondary oocyte.
What changes are observed in the uterus if fertilisation does not occur?
