Reproduction system and Embryology Quiz-20
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. Ceasation of menstrual cycle at the age of 50 is called
Solution
Menopause (Gr. Men-month; pausis;-N-cessation) It is a phase in woman’s life when ovulation and menstruation stops. Is occurs between 45-55 years of age. Some woman have irregular cycles for months or years prior to menopauses other simply stops menstruating abruptly. Decline in oestrogen and progesterone level leads to menopause
Menopause (Gr. Men-month; pausis;-N-cessation) It is a phase in woman’s life when ovulation and menstruation stops. Is occurs between 45-55 years of age. Some woman have irregular cycles for months or years prior to menopauses other simply stops menstruating abruptly. Decline in oestrogen and progesterone level leads to menopause
Q2. Function of scrotum is to maintain the
Solution
Scrotum maintains the temperature of testis, which is 2-2.5°C below the body temperature. In winter they reduces their surface area for preventing heat loss, so that temperature remains 34.5-35℃. In summer it increase their surface area for cooling, so that the temperature remains 34.5-35℃
Scrotum maintains the temperature of testis, which is 2-2.5°C below the body temperature. In winter they reduces their surface area for preventing heat loss, so that temperature remains 34.5-35℃. In summer it increase their surface area for cooling, so that the temperature remains 34.5-35℃
Q3. Ovulation takes place in a month between
Solution
Ovulation is the release of the secondary oocyte from the ovary. In humans, ovulation occurs about 14 days before the onset of the next menstruation.
Ovulation is the release of the secondary oocyte from the ovary. In humans, ovulation occurs about 14 days before the onset of the next menstruation.
Q4. Leydig cells secretes …. hormone
Solution
Testosterone. Region outside the seminiferous tubules is called interdigital space, which is lined by interstitial cells also called Leydig cells. Leydig cells secretes testosterone and also called endocrine part of the testis
Testosterone. Region outside the seminiferous tubules is called interdigital space, which is lined by interstitial cells also called Leydig cells. Leydig cells secretes testosterone and also called endocrine part of the testis
Q5.Males have numbers of internal accessory organs. Which one (s) is/are responsible for secreting fluid containing fructose and prostaglandins?
Solution
Seminal vesicle secretes seminal fluid containing fructose and prostaglandins. Polar bodies are formed by meiosis-I and meiosis-II before and after fertilisation respectively. Polar bodies serves both as dumping ground for extra sets of chromosomes and ensures that the ovum will have most of the cytoplasm
Seminal vesicle secretes seminal fluid containing fructose and prostaglandins. Polar bodies are formed by meiosis-I and meiosis-II before and after fertilisation respectively. Polar bodies serves both as dumping ground for extra sets of chromosomes and ensures that the ovum will have most of the cytoplasm
Q6. Hormones plays a very significant role in puberty. …A… secreted by …B… stimulates …C… lobe of pituitary to secrete …D… and …E… hormones. Testosterone brings developmental of secondary sex organs and secondary characters.A, B, C, D and E in the above statement are
Solution
A-GnRH, B-Hypothalamus, C-Anterior, D-LH, E-FSH
A-GnRH, B-Hypothalamus, C-Anterior, D-LH, E-FSH
Q7.Which one of the following cells have haploid number of chromosome?
Solution
Primary spermatocytes are diploid in number. Secondary (2°) spermatocytes and spermatids are haploid in number
Primary spermatocytes are diploid in number. Secondary (2°) spermatocytes and spermatids are haploid in number
Q8.FSH is given to a rat which don’t have anterior lobe of pituitary. What will not happen in rat?
Solution
Gastrulation is the formation of gastrula from blastula. It is that phase of embryonic development during which the cells of blastula move in small mass to attain the final location. Such movement of cells is called morphogenetic movement.
Gastrulation is the formation of gastrula from blastula. It is that phase of embryonic development during which the cells of blastula move in small mass to attain the final location. Such movement of cells is called morphogenetic movement.
Q9.Length and width of testis is
Solution
Each human testis is oval in shape with a length of about 4 to 5 cm and a width of about 2 to 3 cm
Each human testis is oval in shape with a length of about 4 to 5 cm and a width of about 2 to 3 cm
Q10. Process of maturation and development of sperm is called
Solution
Spermatogenesis is the process of the formation of haploid spermatozoa (sperms) from the undifferentiated diploid primordial germs cells of the testes, which involves multiplication phase, growth phase, maturation phase and differentiation phase, whereas Spermiogenesis is the process to transformation of spermatids intospermatozoa (sperms) which involves differentiation phase.
Spermatogenesis is the process of the formation of haploid spermatozoa (sperms) from the undifferentiated diploid primordial germs cells of the testes, which involves multiplication phase, growth phase, maturation phase and differentiation phase, whereas Spermiogenesis is the process to transformation of spermatids intospermatozoa (sperms) which involves differentiation phase.
