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प्रश्न
The membranous cover of the ovum at ovulation is ______.
विकल्प
Corona radiata
Zona radiata
Zona pellucida
Chorion
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उत्तर
The membranous cover of the ovum at ovulation is corona radiata.
Explanation:
The corona radiata is the membranous cover of the ovum at ovulation, formed by the layers of follicular cells surrounding the ovum. It provides nutrients and protection to the ovum during ovulation.
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संबंधित प्रश्न
Explain the process of fertilization in human beings.
Explain the process of development in human beings.
State the changes that take place in the uterus when Female gamete/egg is not fertilised
Mention the total number of chromosomes along with the sex chromosomes that are present in a human female and a human male. Explain how in sexually producing organisms the number of chromosomes in the progeny remains the same as that of the parents.
Write the function of the following part in a human female reproductive system:
Uterus
List the two types of reproduction. Which one of the two is responsible for bringing in more variations in its progeny and how?
The structure formed by the villi of the embryo and the uterus of the mother.
Give technical terms for Thin walled sac of skin which covers the testes
Give biological explanations for All the food chains begin with green plants.
What are the female sex cells in humans called?
What is the name of the process in which thickened uterus lining alongwith blood vessels is removed from the body of a human female through vaginal bleeding?
Why does menstruation occur? Describe the menstrual cycle in human females (or women).
Why is it an advantage for the testes to be situated in the scrotal sac outside the main body cavity? Can you think of one disadvantage?
What joins embryo to placenta in mother's body?
Which of the following is not a sexually transmitted disease?
(a) gonorrhoea
(b) hepatitis
(c) syphilis
(d) AIDS
Which one of the following best describes the function of the umbilical cord? It :
(a) feeds the embryo with digested substances.
(b) conveys nutrients and wastes to and from the embryo respectively
(c) removes waste matter from the embryo to the mother's blood.
(d) supplies oxygenated blood from the mother to the embryo.
Which among the following are not the functions of testes at puberty?
(i) formation of germ cells
(ii) secretion of testosterone
(iii) development of the placenta
(iv) secretion of estrogen
In humans, the fertilization takes place in:
Rewrite the terms in the correct order so as to be in a logical sequence.
Implantation, ovulation, child birth, gestation, fertilisation.
Fill in the blank.
In humans, ------ chromosome is responsible for maleness.
Give the functions of the following:
Vagina
Label the folowing diagram
Rewrite the following terms in a correct and logical sequence:
The luteal phase, follicular phase, menstrual phase, ovulatory phase.
Give Reasons
At the time of birth, the testes descend into the scrotal sacs.
Name the Following
Days in the human gestation period.
Mention the importance of the position of the testes in humans.
What is the composition of semen?
Human eggs are______.
The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for ______.
A zygote is formed by the fusion of a male gamete and a female gamete. The number of chromosomes in the zygote of a human is ______.
