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NEET • BIOLOGY • HUMAN REPRODUCTION
Human reproduction practice · Easy
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Showing 61-85 of 85 questions
61
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61 of 85
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Chorionic villi are formed by the modification of
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Correct option: A
Outer layer of trophoblast
Option A (Outer layer of trophoblast) is correct because chorionic villi are formed from the outer layer of the trophoblast, which interacts with the maternal blood supply.
62
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Follicular phase is also called
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Correct option: C
Proliferative phase
Option C (Proliferative phase) is correct because the follicular phase of the menstrual cycle is characterized by the proliferation of the endometrium under the influence of estrogen produced by the developing follicle.
63
Easy
63 of 85
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During pregnancy which one of the following is excreted?
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Correct option: A
Hcg
Option A (Hcg) is correct because hCG is a hormone produced by the placenta and excreted in the urine during pregnancy.
64
Easy
64 of 85
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Which hormone level reaches peak during luteal phase of menstrual cycle?
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Correct option: B
Progesterone
Option B (Progesterone) is correct because progesterone levels peak during the luteal phase to prepare the uterus for implantation.
65
Easy
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Foetal ejection reflex immediately leads to
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Correct option: B
Secretion of oxytocin from maternal pituitary gland
Option B (Secretion of oxytocin from maternal pituitary gland) is correct because the fetal ejection reflex triggers the release of oxytocin from the mother's pituitary gland, which then stimulates stronger uterine contractions.
66
Easy
66 of 85
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How many of the items given below in box belongs to human male reproductive system? Seminal vesicles, Glans penis, Prostate gland, Infundibulum, Foreskin, Hymen, Mons pubis
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Correct option: B
Four
Option D (Four) is correct because Seminal vesicles, Glans penis, Prostate gland, and Foreskin are parts of the male reproductive system.
67
Easy
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Skin epidermis, tooth, enamel, lens and corner of outer ear, brain, spinal cord, skeletal muscles of human head are derived from
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Correct option: D
Both (1) and (3)
Option A (Ectoderm) is correct because skin epidermis, tooth enamel, lens, cornea, brain, and spinal cord are derived from the ectoderm.
68
Easy
68 of 85
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The human embryo develops from
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Correct option: B
Inner cell mass
Option B (Inner cell mass) is correct because the human embryo develops from the inner cell mass of the blastocyst.
69
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Vaginal orifice, urethral orifice are open in
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Correct option: A
Vulva
Option A (Vulva) is correct because the vaginal and urethral orifices are openings located within the vulva.
70
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Fertilization is
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Correct option: A
Fusion of male and female gametes
Option A (Fusion of male and female gametes) is correct because fertilization is the process where the sperm and egg fuse to form a zygote.
71
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Understanding
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Blastomeres are daughter cells formed in the process of
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Correct option: A
Cleavage, when zygote undergoes mitotic division.
Option A is correct because blastomeres are the daughter cells formed during cleavage, which is the rapid mitotic division of the zygote.
72
Easy
72 of 85
Remembering
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Sugar fructose is present in the secretion of
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Correct option: C
Seminal vesicles
Option C (Seminal vesicles) is correct because seminal vesicles secrete a fluid rich in fructose, which provides energy for sperm.
73
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73 of 85
Remembering
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Ceasation of menstrual cycle at the age of 50 is called
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Correct option: D
Menopause
Option D (Menopause) is correct because menopause is defined as the cessation of the menstrual cycle, typically occurring around the age of 50.
74
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In humans, at the end of first meiotic division the male germ cells differentiate into the
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Correct option: C
secondary spermatocytes – 23 chromosomes
Option C is correct because at the end of the first meiotic division, primary spermatocytes differentiate into secondary spermatocytes with 23 chromosomes.
75
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The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
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Correct option: D
Maintaining the scrotal temperature lower than the internal body temperature
Option D (Maintaining the scrotal temperature lower than the internal body temperature) is correct because the scrotum provides a cooler environment for optimal sperm production.
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76
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First polar body is formed during the formation of ________ and completion of ________ meiotic division.
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Correct option: B
Secondary oocytes, I
Option B is correct because the first polar body is formed during the formation of secondary oocytes and the completion of the first meiotic division.
77
Easy
77 of 85
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Sertoli’s cells are found in
View answer and explanation
Correct option: C
Seminiferous tubules and provide nutrition to germ cells
Option C (Seminiferous tubules and provide nutrition to germ cells) is correct because Sertoli cells are located within the seminiferous tubules of the testes and provide support and nourishment to developing sperm cells.
78
Easy
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Understanding
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The signals for parturition originates from
View answer and explanation
Correct option: B
Placenta as well as fully developed foetus
Option B (Placenta as well as fully developed foetus) is correct because signals for parturition originate from both the fully developed fetus and the placenta, initiating a neuroendocrine reflex.
79
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Understanding
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Read the following statements about the human female reproductive system and identify the incorrect statement.
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Correct option: B
The clitoris is a tiny finger-like structure which lies at the upper junction of the two labia majora above the urethral opening.
Option B is the incorrect statement because the clitoris is located at the upper junction of the labia minora, not labia majora, above the urethral opening.
80
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Select wrong statement
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Correct option: B
The granular of each breast is divided into 15-20 mammary lobes
Option B (The granular of each breast is divided into 15-20 mammary lobes) is the wrong statement because the *mammary gland* of each breast is divided into 15-20 mammary lobes, not the granular.
81
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How many mature, functional follicles are produced by a female in a lifetime?
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Correct option: B
400
Option B (400) is correct because a female typically produces around 400 mature follicles in her lifetime, capable of releasing an ovum.
82
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82 of 85
Remembering
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The vasa efferentia leave the testis and opens into the …A…, located along the …B… surface of each testis. Here A and B refers to
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Correct option: C
A-epididymis; B-posterior
Option C (A-epididymis; B-posterior) is correct because the vasa efferentia leave the testis and open into the epididymis, located along the posterior surface of each testis.
83
Easy
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Understanding
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Which of the following indicates pregnancy?
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Correct option: A
Lack of menstruation.
Option A is correct because a lack of menstruation is a primary indicator of pregnancy.
84
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In menstrual cycle when corpus luteum regressed
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Correct option: C
At Secretory phase
Option C (At Secretory phase) is correct because the corpus luteum, which secretes progesterone, regresses if fertilization does not occur, leading to menstruation during the secretory phase.
85
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Remembering
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Sertoli cells are also called
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Correct option: A
Sustentacular cells
Option A (Sustentacular cells) is correct because Sertoli cells are also known as sustentacular cells due to their supportive role in spermatogenesis.
Revision notes and key takeaways
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