272088
By the end of how many weeks, major organ system are formed during the embryonic development?
1 4 weeks
2 8 weeks
3 12 weeks
4 24 weeks
Explanation:
(c) By the end of 12 weeks (first trimester), most of the major organ systems are formed, for example, the limbs and external genital organs are well-developed.
NCERT Page-54 / N-38
Human Reproduction
272081
In human embryology, the chorion is derived from
1 Ectoderm
2 Mesoderm
3 Endoderm
4 Trophoblast
Explanation:
(d)
NCERT Page-53 / N-38
Human Reproduction
272082
The majority of human organ formation occurs
1 entirely during the last trimester of pregnancy.
2 after implantation and during the first trimester of pregnancy.
3 shortly before the onset of true labour.
4 due to the stimulation generated during Braxton Hicks contractions.
Explanation:
(b) The development of organs and organ systems, a process called organogenesis, occurs during the latter. half of the first trimester.
NCERT Page-54 / N-38
Human Reproduction
272083
Placenta facilitate
1 the supply of oxygen and nutrients to the embryo.
2 removal of carbon dioxide.
3 removal of excretory/waste materials.
4 All of the above
Explanation:
(d) All of the above statements are correct.
NCERT Page-53 / N-37
Human Reproduction
272084
Identical twins result when
1 the zygote divides and the daughter cells split and develop independently.
2 two eggs with identical genetic material are fertilized, each by a different sperm.
3 an embryo splits before cellular differentiation has occurred.
4 Both (a)and (c)
Explanation:
(d) If an embryo splits before cell fate has been determined, identical twins may result.
272088
By the end of how many weeks, major organ system are formed during the embryonic development?
1 4 weeks
2 8 weeks
3 12 weeks
4 24 weeks
Explanation:
(c) By the end of 12 weeks (first trimester), most of the major organ systems are formed, for example, the limbs and external genital organs are well-developed.
NCERT Page-54 / N-38
Human Reproduction
272081
In human embryology, the chorion is derived from
1 Ectoderm
2 Mesoderm
3 Endoderm
4 Trophoblast
Explanation:
(d)
NCERT Page-53 / N-38
Human Reproduction
272082
The majority of human organ formation occurs
1 entirely during the last trimester of pregnancy.
2 after implantation and during the first trimester of pregnancy.
3 shortly before the onset of true labour.
4 due to the stimulation generated during Braxton Hicks contractions.
Explanation:
(b) The development of organs and organ systems, a process called organogenesis, occurs during the latter. half of the first trimester.
NCERT Page-54 / N-38
Human Reproduction
272083
Placenta facilitate
1 the supply of oxygen and nutrients to the embryo.
2 removal of carbon dioxide.
3 removal of excretory/waste materials.
4 All of the above
Explanation:
(d) All of the above statements are correct.
NCERT Page-53 / N-37
Human Reproduction
272084
Identical twins result when
1 the zygote divides and the daughter cells split and develop independently.
2 two eggs with identical genetic material are fertilized, each by a different sperm.
3 an embryo splits before cellular differentiation has occurred.
4 Both (a)and (c)
Explanation:
(d) If an embryo splits before cell fate has been determined, identical twins may result.
272088
By the end of how many weeks, major organ system are formed during the embryonic development?
1 4 weeks
2 8 weeks
3 12 weeks
4 24 weeks
Explanation:
(c) By the end of 12 weeks (first trimester), most of the major organ systems are formed, for example, the limbs and external genital organs are well-developed.
NCERT Page-54 / N-38
Human Reproduction
272081
In human embryology, the chorion is derived from
1 Ectoderm
2 Mesoderm
3 Endoderm
4 Trophoblast
Explanation:
(d)
NCERT Page-53 / N-38
Human Reproduction
272082
The majority of human organ formation occurs
1 entirely during the last trimester of pregnancy.
2 after implantation and during the first trimester of pregnancy.
3 shortly before the onset of true labour.
4 due to the stimulation generated during Braxton Hicks contractions.
Explanation:
(b) The development of organs and organ systems, a process called organogenesis, occurs during the latter. half of the first trimester.
NCERT Page-54 / N-38
Human Reproduction
272083
Placenta facilitate
1 the supply of oxygen and nutrients to the embryo.
2 removal of carbon dioxide.
3 removal of excretory/waste materials.
4 All of the above
Explanation:
(d) All of the above statements are correct.
NCERT Page-53 / N-37
Human Reproduction
272084
Identical twins result when
1 the zygote divides and the daughter cells split and develop independently.
2 two eggs with identical genetic material are fertilized, each by a different sperm.
3 an embryo splits before cellular differentiation has occurred.
4 Both (a)and (c)
Explanation:
(d) If an embryo splits before cell fate has been determined, identical twins may result.
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Human Reproduction
272088
By the end of how many weeks, major organ system are formed during the embryonic development?
1 4 weeks
2 8 weeks
3 12 weeks
4 24 weeks
Explanation:
(c) By the end of 12 weeks (first trimester), most of the major organ systems are formed, for example, the limbs and external genital organs are well-developed.
NCERT Page-54 / N-38
Human Reproduction
272081
In human embryology, the chorion is derived from
1 Ectoderm
2 Mesoderm
3 Endoderm
4 Trophoblast
Explanation:
(d)
NCERT Page-53 / N-38
Human Reproduction
272082
The majority of human organ formation occurs
1 entirely during the last trimester of pregnancy.
2 after implantation and during the first trimester of pregnancy.
3 shortly before the onset of true labour.
4 due to the stimulation generated during Braxton Hicks contractions.
Explanation:
(b) The development of organs and organ systems, a process called organogenesis, occurs during the latter. half of the first trimester.
NCERT Page-54 / N-38
Human Reproduction
272083
Placenta facilitate
1 the supply of oxygen and nutrients to the embryo.
2 removal of carbon dioxide.
3 removal of excretory/waste materials.
4 All of the above
Explanation:
(d) All of the above statements are correct.
NCERT Page-53 / N-37
Human Reproduction
272084
Identical twins result when
1 the zygote divides and the daughter cells split and develop independently.
2 two eggs with identical genetic material are fertilized, each by a different sperm.
3 an embryo splits before cellular differentiation has occurred.
4 Both (a)and (c)
Explanation:
(d) If an embryo splits before cell fate has been determined, identical twins may result.
272088
By the end of how many weeks, major organ system are formed during the embryonic development?
1 4 weeks
2 8 weeks
3 12 weeks
4 24 weeks
Explanation:
(c) By the end of 12 weeks (first trimester), most of the major organ systems are formed, for example, the limbs and external genital organs are well-developed.
NCERT Page-54 / N-38
Human Reproduction
272081
In human embryology, the chorion is derived from
1 Ectoderm
2 Mesoderm
3 Endoderm
4 Trophoblast
Explanation:
(d)
NCERT Page-53 / N-38
Human Reproduction
272082
The majority of human organ formation occurs
1 entirely during the last trimester of pregnancy.
2 after implantation and during the first trimester of pregnancy.
3 shortly before the onset of true labour.
4 due to the stimulation generated during Braxton Hicks contractions.
Explanation:
(b) The development of organs and organ systems, a process called organogenesis, occurs during the latter. half of the first trimester.
NCERT Page-54 / N-38
Human Reproduction
272083
Placenta facilitate
1 the supply of oxygen and nutrients to the embryo.
2 removal of carbon dioxide.
3 removal of excretory/waste materials.
4 All of the above
Explanation:
(d) All of the above statements are correct.
NCERT Page-53 / N-37
Human Reproduction
272084
Identical twins result when
1 the zygote divides and the daughter cells split and develop independently.
2 two eggs with identical genetic material are fertilized, each by a different sperm.
3 an embryo splits before cellular differentiation has occurred.
4 Both (a)and (c)
Explanation:
(d) If an embryo splits before cell fate has been determined, identical twins may result.