Reproduction System and Embryology Quiz-07
Dear Readers,
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.
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Q1.
The leydig’s cells secrete
Solution
(b) Leydig’s cells are endocrine in nature and present in testes of mammals. These cells in other vertebrates except mammals are known as interstitial cells. These cells secrete male sex hormone testosterone, which influence secondary sexual charscters in males. Oestrogen is female sex hormone, secreted from Graafian follicles and responsible for secondary sexual characters in female.
(b) Leydig’s cells are endocrine in nature and present in testes of mammals. These cells in other vertebrates except mammals are known as interstitial cells. These cells secrete male sex hormone testosterone, which influence secondary sexual charscters in males. Oestrogen is female sex hormone, secreted from Graafian follicles and responsible for secondary sexual characters in female.
Q2.
Natural parthenogenesis is found in
Solution
(b) Parthenogenesis refers to the development of unfertilized ovum into a new individual. In honey bee, drones develop parthenogenetically.
(b) Parthenogenesis refers to the development of unfertilized ovum into a new individual. In honey bee, drones develop parthenogenetically.
Q3.
Parturition is
Solution
(c) In parturation there is strong uterine contraction leads to the expulsion of baby called child birth
(c) In parturation there is strong uterine contraction leads to the expulsion of baby called child birth
Q4.
Corpus luteum is developed from
Solution
(c) Corpus luteum (yellow body) is fromed from ruptured Graafian follicle.
(c) Corpus luteum (yellow body) is fromed from ruptured Graafian follicle.
Q5.
In which of the following animal, cleavage divisions are restricted to a small part of cytoplasm and nucleus in animal pole of egg?
Solution
(c) In birds and other polylecithal egg containing animals, cleavage (division) are restricted to a small part of cytoplasm and nucleus in animal pole of egg. Such type of cleavage is termed as ‘meroblastic cleavage’.
(c) In birds and other polylecithal egg containing animals, cleavage (division) are restricted to a small part of cytoplasm and nucleus in animal pole of egg. Such type of cleavage is termed as ‘meroblastic cleavage’.
Q6.
Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with
Solution
(b) Thalidomide should not be used during pregnancy because even a single dose of thalidomide can cause severe birth defects such as phocomelia (underdeveloped limbs) in foetus or foetal death.
(b) Thalidomide should not be used during pregnancy because even a single dose of thalidomide can cause severe birth defects such as phocomelia (underdeveloped limbs) in foetus or foetal death.
Q7.
In human lining of gastrointestinal tract, lining of lungs, thymus thyroid, tonsils, kidney duct and bladder are derived from
Solution
(c) Endoderm. Fate of three germ layers Mesoderm Dermis of skin, circulatory system, muscles, bones (except facial) Endoderm Lining of Gl tract, lining of lungs, kidney ducts and bladder, thymus, thyroid tonsils Ectoderm Epidermis of skin, tooth enamel, lens and cornea of the eye outer ear Brain and spinal cord, facial bones skeletal muscles in the head
(c) Endoderm. Fate of three germ layers Mesoderm Dermis of skin, circulatory system, muscles, bones (except facial) Endoderm Lining of Gl tract, lining of lungs, kidney ducts and bladder, thymus, thyroid tonsils Ectoderm Epidermis of skin, tooth enamel, lens and cornea of the eye outer ear Brain and spinal cord, facial bones skeletal muscles in the head
Q8.
Acrosome is the modified
Solution
(c) Golgi body. Acrosome is the part of sperm, which is found at the head region. It is the modified Golgi body that contain many enzymes for the penetration to ovum. 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
(c) Golgi body. Acrosome is the part of sperm, which is found at the head region. It is the modified Golgi body that contain many enzymes for the penetration to ovum. 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
Q9.
Solution
Q10.
Solution
(b) LH or ICSH acts on the Leyding cells, which secretes androgens. Testosterone is the principle androgen of male reproductive system
(b) LH or ICSH acts on the Leyding cells, which secretes androgens. Testosterone is the principle androgen of male reproductive system
