286469
Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?
1 Oogonia
2 Polar body
3 Corpus luteum
4 Secondary oocytes
Explanation:
(d) The zona pellucida is a glycoprotein thick noncellular membrane surrounding the plasma membrane of an oocyte or secondary oocytes.
NCERT Page-52 / N-36
Human Reproduction(NCERT)
286470
At the time of implantation, the human embryo is called
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(b) During human embryogenesis, the blastocyst arises from the morula in the uterus, after 5 days of fertilization. The early embryo undergoes cell, differentiation and structural changes to become the blastocyst. It is then prepared for implantation into the uterine wall 6 days after fertilization. Implantation marks the end of the germinal stage and the beginning of the embryonic stage of development.
NCERT Page-53 / N-37
Human Reproduction(NCERT)
286471
Fusion of haploid nucleus of sperm and that of ovum lead to the formation of
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(a) In sexual reproduction in organisms, when the two nuclei of male and female gametes fuse together the immediate cell which is formed is called the zygote. The zygote goes on to become an embryo and later stages of development.
NCERT Page-52 / N-35
Human Reproduction(NCERT)
286472
Which of the following differentiate into embryo?
1 Morula
2 Zygote
3 Trophoblast
4 Inner cell mass
Explanation:
(d) In the blastocyst, the blastomeres are arranged into an outer layer called trophoblast and an inner group of cells attached to trophoblast called the inner cell mass. The trophoblast layer then gets attached to the endometrium and the inner cell mass gets differentiated
NCERT Page-53 / N-36
Human Reproduction(NCERT)
286473
In the given figure the structure of blastocyst. Some art are labelled as A and B.
286469
Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?
1 Oogonia
2 Polar body
3 Corpus luteum
4 Secondary oocytes
Explanation:
(d) The zona pellucida is a glycoprotein thick noncellular membrane surrounding the plasma membrane of an oocyte or secondary oocytes.
NCERT Page-52 / N-36
Human Reproduction(NCERT)
286470
At the time of implantation, the human embryo is called
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(b) During human embryogenesis, the blastocyst arises from the morula in the uterus, after 5 days of fertilization. The early embryo undergoes cell, differentiation and structural changes to become the blastocyst. It is then prepared for implantation into the uterine wall 6 days after fertilization. Implantation marks the end of the germinal stage and the beginning of the embryonic stage of development.
NCERT Page-53 / N-37
Human Reproduction(NCERT)
286471
Fusion of haploid nucleus of sperm and that of ovum lead to the formation of
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(a) In sexual reproduction in organisms, when the two nuclei of male and female gametes fuse together the immediate cell which is formed is called the zygote. The zygote goes on to become an embryo and later stages of development.
NCERT Page-52 / N-35
Human Reproduction(NCERT)
286472
Which of the following differentiate into embryo?
1 Morula
2 Zygote
3 Trophoblast
4 Inner cell mass
Explanation:
(d) In the blastocyst, the blastomeres are arranged into an outer layer called trophoblast and an inner group of cells attached to trophoblast called the inner cell mass. The trophoblast layer then gets attached to the endometrium and the inner cell mass gets differentiated
NCERT Page-53 / N-36
Human Reproduction(NCERT)
286473
In the given figure the structure of blastocyst. Some art are labelled as A and B.
286469
Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?
1 Oogonia
2 Polar body
3 Corpus luteum
4 Secondary oocytes
Explanation:
(d) The zona pellucida is a glycoprotein thick noncellular membrane surrounding the plasma membrane of an oocyte or secondary oocytes.
NCERT Page-52 / N-36
Human Reproduction(NCERT)
286470
At the time of implantation, the human embryo is called
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(b) During human embryogenesis, the blastocyst arises from the morula in the uterus, after 5 days of fertilization. The early embryo undergoes cell, differentiation and structural changes to become the blastocyst. It is then prepared for implantation into the uterine wall 6 days after fertilization. Implantation marks the end of the germinal stage and the beginning of the embryonic stage of development.
NCERT Page-53 / N-37
Human Reproduction(NCERT)
286471
Fusion of haploid nucleus of sperm and that of ovum lead to the formation of
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(a) In sexual reproduction in organisms, when the two nuclei of male and female gametes fuse together the immediate cell which is formed is called the zygote. The zygote goes on to become an embryo and later stages of development.
NCERT Page-52 / N-35
Human Reproduction(NCERT)
286472
Which of the following differentiate into embryo?
1 Morula
2 Zygote
3 Trophoblast
4 Inner cell mass
Explanation:
(d) In the blastocyst, the blastomeres are arranged into an outer layer called trophoblast and an inner group of cells attached to trophoblast called the inner cell mass. The trophoblast layer then gets attached to the endometrium and the inner cell mass gets differentiated
NCERT Page-53 / N-36
Human Reproduction(NCERT)
286473
In the given figure the structure of blastocyst. Some art are labelled as A and B.
286469
Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?
1 Oogonia
2 Polar body
3 Corpus luteum
4 Secondary oocytes
Explanation:
(d) The zona pellucida is a glycoprotein thick noncellular membrane surrounding the plasma membrane of an oocyte or secondary oocytes.
NCERT Page-52 / N-36
Human Reproduction(NCERT)
286470
At the time of implantation, the human embryo is called
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(b) During human embryogenesis, the blastocyst arises from the morula in the uterus, after 5 days of fertilization. The early embryo undergoes cell, differentiation and structural changes to become the blastocyst. It is then prepared for implantation into the uterine wall 6 days after fertilization. Implantation marks the end of the germinal stage and the beginning of the embryonic stage of development.
NCERT Page-53 / N-37
Human Reproduction(NCERT)
286471
Fusion of haploid nucleus of sperm and that of ovum lead to the formation of
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(a) In sexual reproduction in organisms, when the two nuclei of male and female gametes fuse together the immediate cell which is formed is called the zygote. The zygote goes on to become an embryo and later stages of development.
NCERT Page-52 / N-35
Human Reproduction(NCERT)
286472
Which of the following differentiate into embryo?
1 Morula
2 Zygote
3 Trophoblast
4 Inner cell mass
Explanation:
(d) In the blastocyst, the blastomeres are arranged into an outer layer called trophoblast and an inner group of cells attached to trophoblast called the inner cell mass. The trophoblast layer then gets attached to the endometrium and the inner cell mass gets differentiated
NCERT Page-53 / N-36
Human Reproduction(NCERT)
286473
In the given figure the structure of blastocyst. Some art are labelled as A and B.
286469
Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?
1 Oogonia
2 Polar body
3 Corpus luteum
4 Secondary oocytes
Explanation:
(d) The zona pellucida is a glycoprotein thick noncellular membrane surrounding the plasma membrane of an oocyte or secondary oocytes.
NCERT Page-52 / N-36
Human Reproduction(NCERT)
286470
At the time of implantation, the human embryo is called
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(b) During human embryogenesis, the blastocyst arises from the morula in the uterus, after 5 days of fertilization. The early embryo undergoes cell, differentiation and structural changes to become the blastocyst. It is then prepared for implantation into the uterine wall 6 days after fertilization. Implantation marks the end of the germinal stage and the beginning of the embryonic stage of development.
NCERT Page-53 / N-37
Human Reproduction(NCERT)
286471
Fusion of haploid nucleus of sperm and that of ovum lead to the formation of
1 zygote
2 blastocysts
3 embryo
4 foetus
Explanation:
(a) In sexual reproduction in organisms, when the two nuclei of male and female gametes fuse together the immediate cell which is formed is called the zygote. The zygote goes on to become an embryo and later stages of development.
NCERT Page-52 / N-35
Human Reproduction(NCERT)
286472
Which of the following differentiate into embryo?
1 Morula
2 Zygote
3 Trophoblast
4 Inner cell mass
Explanation:
(d) In the blastocyst, the blastomeres are arranged into an outer layer called trophoblast and an inner group of cells attached to trophoblast called the inner cell mass. The trophoblast layer then gets attached to the endometrium and the inner cell mass gets differentiated
NCERT Page-53 / N-36
Human Reproduction(NCERT)
286473
In the given figure the structure of blastocyst. Some art are labelled as A and B.
