Reproduction System and Embryology Quiz-06

Reproduction System and Embryology Quiz-06

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NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced. .

Q1.   Each ovary is bout 2-4 cm in length connected to the …A… wall by …B… Each ovary is covered by a thin epithelium which encloses the ovarian stroma. Stroma is divided into two zones …C… and …D… Fill the suitable choices for A to D

•  A-inner medulla, B-peripheral cortex, C-ligament, D-pelvic wall
•  A- pelvic, B- ligament, C- peripheral cortex, D- inner medulla
•  A- pelvic, B-peripheral cortex, C-ligament, D- inner medulla
•  A-inner medulla, B-peripheral cortex, C-ligament, D-pelvic wall

Solution
(b) A-Pelvic wall; B-Ligament, C-Peripheral cortex; D-Inner medulla

Q2.   Structure connecting the foetus to placenta is

•  Umbilical cord
•  Amnion
•  Yolk sac
•  Chorion

Solution
(a) Umbilical cord connects the foetus to placenta of mother. It mainly consists of allantoic mesoderm and blood vessels (umbilical artery and veins).

Q3.   Releasing of sperms from seminiferous tubules is called

•  Spermiogenesis
•  Spermiation
•  Spermatogenesis
•  Spermatid

Solution
(b) Spermiation. The transformation of spermatids into spermatozoa is called spermiogenesis or spermateliosis. The spermatids are later on known as sperms. After spermiogenesis head becomes embedded in the Sertoli cells and are finally released from the seminiferous tubules by process called spermiation

Q4.   Hormone, which is responsible for contraction of uterus is

•  Vasopressin
•  Oxytocin
•  Thyrotropin
•  Gonadotropin

Solution
(a) Oxytocin hormone is secreted from neurohypophysis of pituitary. It stimulates the contraction of the smooth muscles of uterus inducing labour pain for child birth.

Q5.   In human beings, normally in which one of the following parts, does the sperm fertilize the ovum?

•  Cervix
•  Fallopian tube
•  lower part of uterus
•  Upper part of uterus

Solution
(b) Fallopian tube or oviduct is the site of fertilization in mammals. The embryo develops upto blastocyst stage in fallopian tube.

Q6.   

•  Option A
•  Option B
•  Option C
•  Option D

Solution

Q7.   57. Sperm lysin is found in

•  Neck region of sperm
•  Middle region of sperm
•  Head region of sperm
•  Tail region of sperm

Solution
(c) Sperm lysin is found in head region of sperm Acrosome contains hyaluronidase proteolytic enzymes, which is popularly known as sperm lysin as it is used to penetrate egg (ovum) at the time of fertilisaton

Q8.   58. A. The mature follicle is called Graafian follicle B. The mature follicle is called secondary follicle

•  Statement A is correct, statement B is incorrect
•  Statement B is correct, statement A is incorrect
•  Both statement are incorrect
•  Both statement are correct

Solution
(a) Mature follicles are called Graafian follicles. After meiosis, the mature follicle gives rise to ovum, which represents the female gametocyte

Q9.   Spermatogenesis is induced by

•  FSH
•  ACTH
•  ICSH
•  ATH

Solution
(a) FSH (Follicle Stimulating Hormone), secreted by anterior lobe of pituitary, stimulates sperm formation in male and growth of ovarian follicles in the females.

Q10.   Adrenal gland is derived from

•  Ectoderm
•  Mesoderm
•  Both (a) and (b)
•  Ectoderm and endoderm

Solution
(a) Adrenal glands are paired structures located on the top of the kidneys. Each adrenal gland has two parts external adrenal cortex and internal adrenal medulla. The adrenal cortex is derived from the mesoderm of the embryo. The adrenal medulla develops from the neuroectoderm of the embryo.