Reproduction system and Embryology Quiz-18
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. Eggs which have yolk in the centre surrounded by cytoplasm are called
Solution
In centrolecithal eggs, the yolk is surrounded by cytoplasm, e.g., eggs of insects.
In centrolecithal eggs, the yolk is surrounded by cytoplasm, e.g., eggs of insects.
Q2. The second maturation division of the mammalian ovum occurs
Solution
In mammalian ovum during maturation phase, meiosis occurs. Nucleus shift towards animal pole and undergoes meiosis-I. After fertilization (penetration of sperm), the second meiotic division is completes with unequal cytoplasmic cleavage. This forms a large cell the ootid with essentially whole of the cytoplasm and a very small cell, the second polar body.
In mammalian ovum during maturation phase, meiosis occurs. Nucleus shift towards animal pole and undergoes meiosis-I. After fertilization (penetration of sperm), the second meiotic division is completes with unequal cytoplasmic cleavage. This forms a large cell the ootid with essentially whole of the cytoplasm and a very small cell, the second polar body.
Q3. Sertoli’s cells are found in
Solution
Sertoli’s cells are found in human testes, also called nurse cells. These are supportive nutritive cells and secrete a polypeptide hormone called inhibin and a steroid oestradiol which interferes with spermatogenic activity and kinetics of sperm production.
Sertoli’s cells are found in human testes, also called nurse cells. These are supportive nutritive cells and secrete a polypeptide hormone called inhibin and a steroid oestradiol which interferes with spermatogenic activity and kinetics of sperm production.
Q4. Uterus is also called
Solution
In uterus the development of foetus takes place and this development lasts till parturition. Generally, in common language uterus is called womb
In uterus the development of foetus takes place and this development lasts till parturition. Generally, in common language uterus is called womb
Q5.Mammary gland is a
Solution
Internally, the breast consists of the glandular tissue forming mammary glands, the fibrous tissue (connective tissue) and the fatty or adipose tissue. Mammary glands are modified sweat glands
Internally, the breast consists of the glandular tissue forming mammary glands, the fibrous tissue (connective tissue) and the fatty or adipose tissue. Mammary glands are modified sweat glands
Q6. Bartholin glands are situated
Solution
Greater vestibular glands (Bartholin’s gland) are packed glands situated on each side of vaginal orifice. These glands are homologous to male bulbourethral (Cowper’s) gland and secretes viscus fluid that supplements the lubrication during sexual intercourse. The lesser vestibular glands (paraurethral glands or glands of Skene) are numerous minute glands that are present on either side of the urethral orifice (opening). These glands are homologous to the male prostate glands and secrete mucus
Greater vestibular glands (Bartholin’s gland) are packed glands situated on each side of vaginal orifice. These glands are homologous to male bulbourethral (Cowper’s) gland and secretes viscus fluid that supplements the lubrication during sexual intercourse. The lesser vestibular glands (paraurethral glands or glands of Skene) are numerous minute glands that are present on either side of the urethral orifice (opening). These glands are homologous to the male prostate glands and secrete mucus
Q7.Find out primary follicle and tertiary follicle in question number 114
Solution
B to C represents primary and tertiary follicles respectively. Ovary is internally differentiated into four parts, i.e., outer germinal epithelium of cubical cells, a delicate sheath of connective tissue or tunica albuginea, a cortex of dense connective tissue with reticular fibres, spindle-shaped cells, ovarian follicles and a few blood vessels while the central part of medulla is made of less dense connective tissue with elastic fibres, smooth muscles, a number of blood vessels and a few nerves. Maturation of secondary oocyte is completed in mother’s oviduct after the sperm entry into it for fertilization. 2° oocyte stops advancing further after the completion of metaphase-II. Sperm entry restart the cell cycle by breaking down MPF (Maturation Promoting Factor) and truning on APF (Anaphase Promoting Factor
B to C represents primary and tertiary follicles respectively. Ovary is internally differentiated into four parts, i.e., outer germinal epithelium of cubical cells, a delicate sheath of connective tissue or tunica albuginea, a cortex of dense connective tissue with reticular fibres, spindle-shaped cells, ovarian follicles and a few blood vessels while the central part of medulla is made of less dense connective tissue with elastic fibres, smooth muscles, a number of blood vessels and a few nerves. Maturation of secondary oocyte is completed in mother’s oviduct after the sperm entry into it for fertilization. 2° oocyte stops advancing further after the completion of metaphase-II. Sperm entry restart the cell cycle by breaking down MPF (Maturation Promoting Factor) and truning on APF (Anaphase Promoting Factor
Q8.Corpus spongiosum is found in
Solution
The penis contains three cylindrical masses of erectile tissues – two dorsal corpora cavernosa (which run parallel on the dorsal part) and a central corpus spongiosum (which contain urethra).
The penis contains three cylindrical masses of erectile tissues – two dorsal corpora cavernosa (which run parallel on the dorsal part) and a central corpus spongiosum (which contain urethra).
Q9.Enzyme present in sperm acrosome to dissolve egg membrane is
Solution
The enzyme present in sperm acrosome are collectively called sperm lysins and containing: (i) Hyaluronidase: Acts on the ground substance of follicle cells. (ii) Corona penetrating enzyme: Dissolve corona radiata. (iii) Zona lysin or acrosin: It helps to digest the zona pellucida.
The enzyme present in sperm acrosome are collectively called sperm lysins and containing: (i) Hyaluronidase: Acts on the ground substance of follicle cells. (ii) Corona penetrating enzyme: Dissolve corona radiata. (iii) Zona lysin or acrosin: It helps to digest the zona pellucida.
Q10. Study the following sentences.
I. Testosterone influences the male secondary sexual characters.
II. Gestation period in rabbit is approximately 276 days.
III. Bulbourethral glands secrete a vaginal lubricant.
IV. Placenta secretes oestrogen
Identify the correct statements
Solution
Testosteron is a steroid hormone and causes development of secondary sexual characters in male. Gestation period of rabbit is approximately 28 to 32 days. Bulbourethral glands are the pea-sized glands inferior to the prostate. These glands secrete a fluid that lubricates urethra and the end of penis. Before ovulation, oestrogens are secreted from Graafian follicle. Placenta also secretes some amount of oestrogens.
Testosteron is a steroid hormone and causes development of secondary sexual characters in male. Gestation period of rabbit is approximately 28 to 32 days. Bulbourethral glands are the pea-sized glands inferior to the prostate. These glands secrete a fluid that lubricates urethra and the end of penis. Before ovulation, oestrogens are secreted from Graafian follicle. Placenta also secretes some amount of oestrogens.
