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NEET - Grade 12 - Biology - Human Reproduction - Introduction and Snapshot of Human Reproduction - Study ref# 944

Introduction: Are you aware, humans are sexually reproducing? The reproductive events in humans include formation of gametes (gametogenesis), i.e., sperms in males and ovum in females, transfer of sperms into the female genital tract (... read more

NEET - Grade 12 - Biology - Human Reproduction - Introduction and Snapshot of Human Reproduction - Study ref# 945

Following sections must be covered to understand the Human Reproduction: 1. The Male Reproductive System 2. The Female Reproductive System 3. Gametogenesis 4. Menstrual Cycle 5. Fertilisation and Implantation 6. Pregnancy and ... read more

NEET - Grade 12 - Biology - Reproductive Health - Introduction and Snapshot of Reproductive Health - Study ref# 947

Introduction: You have learnt about human reproductive system and its function in Chapter 3. Now, let’s discuss a closely related topic – reproductive health. What do we understand by this term? The term simply refers to healthy reprod... read more

NEET - Grade 12 - Biology - Principles of Inheritance and Variation - Introduction and Snapshot of Principles of inheritance and Variation - Study ref# 950

Introduction: Humans knew from as early as 8000-1000 B.C. that one of the causes of variation was hidden in sexual reproduction. They exploited the variations that were naturally present in the wild populations of plants and animals to... read more

NEET - Grade 11 - Biology - Structural Organisation in Animals - Importance and Snapshot of Structural Organization In Animals - Study ref# 755

Introduction: In unicellular organisms, all functions like digestion, respiration and reproduction are performed by a single cell. In complex body of multicellular animals the same basic functions are carried out by different groups of... read more

NEET - Grade 12 - Biology - Human Reproduction - Target Setup for Human Reproduction - Study ref# 946

Student requires to achieve the following milestones to get better grip over Human Reproduction. The milestones / targets are as follows: Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapter Test... read more

NEET - Grade 11 - Biology - The Living World - Study ref# 3468

Explain the following briefly: “Reproduction cannot be an all-inclusive defining characteristic of living organisms”.“Cellular organization of the body is the defining feature of the life form”. Answer: The explanations are as follows:Ther... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10142

List different parts of human oviduct through which the ovum travels till it meets the sperm for fertilization. Answer: Fimbriae, infundibulum, ampulla and ampullary—isthmic junction.... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10143

Na me the cells that nourish the germ cells in the tests. Where are these located in the tests?                  [R] [outside Delhi Set-III, Comptt.2013] Answer: Name of cells—Sertoli cells. Location—They are found lining –up the inner... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10144

Write the function of seminal vesicle.                                                [R][Delhi set-I, 2012] Answer: Seminal vesicle produces an alkaline secretion. It neutralizes the acidic environment of female reproductive tract and ma... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10145

Write the location and functions of myometrium and endometrium.                                             [R][Foreign set-I, 2016] Answer: Middle layer of uterus, contractions of the uterus during delivery/child birth/parturition. En... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10146

Give reasons for the following  : The human testes are located outside the abdominal cavity.                                  [U] [outside Delhi Set-II,2012] Answer: For spermatogenesis, it is essential to maintain the temperature 2... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10147

Write the location and functions of the following in human testis: (i)     Sertoli cells (ii)   Leydig cells                                     [R] [Outside Set-II, 2014] Answer:

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NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10148

    The above diagram shows human male reproductive system (one side only).

(i)         ... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10149

Name the male accessory glands in humans and write their functions.                           [U] [Delhi -2017-I, II, III (Comptt.)] Answer: (Paired) seminal vesicles, prostate, bulbourethral glands (paired) Functions: Secretions co... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10150

Draw a labeled diagrammatic view of human me reproductive system.                               [R][Outside Delhi Set –II, 2014] Answer:                                  [CBSE Marking Scheme, 2014]... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10151

Draw a labeled diagram of the human female reproductive system.                              [R][Delhi Set –I, 2011](NCERT) Answer: ... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10152

When do the oogenesis and the spermatogenesis initiate in human females and males, respectively?                                             [R][Delhi Set –II, 2012] Answer: Oogenesis starts in female in their fetal stage while spermatoge... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10153

How does the sperm penetrate through the zona pellucida in the human ovum?                              [R][Delhi Set –II, Comptt.2013] Answer: Acrosome present at the tip of the sperm helps to penetrate through the zona pellucida in huma... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10154

Write the function of each of the following :

(i)                &nbs... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10155

Name the stage of human embryo at which it gets implanted. Explain the process of implantation.                                              [R][Delhi Set –I, 2015] Answer: The embryo gets impanted at blastocyst stage. The tropho... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10156

Enumerate the events in the ovary of a human female during:

(i)              &n... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10157

Mention the relationship between concentration of luteinizing hormone and maintenance of endometrium in the human uterus.                                          [A][Foreign 2017 Set –II] Answer: (Mid cycle) LH surge →formation of ... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10158

Draw a diagram of human sperm. label only those parts along with their functions that assist the sperm to reach and gain entry into the female gamete.                               [R][ Delhi Set –I, II, III, 2014] Answer: Functions#*... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10159

Explain the hormonal control of spermatogenesis in humans.                                             [R][ Delhi Set -II,2014] Answer: Spermatogenesis is under the control of endocrine hormones. In human male reproductive system, sperma... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10160

Give a schematic representation, showing the events of spermatogenesis in human male.                             [R][Outside Delhi Set -I, 2011] Answer: ... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10161

The graph given below shows the variation in the levels of the ovarian hormones during various phases of menstrual cycle ;                                  [E & A][CBSE SQP, 2017-18]      

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NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10162

(a)                Explain menstrual cycle in human females.

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NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10163

Explain the events that follow upto fertilization when thesperms ome in contract with the ovum in the fallopian tube of a human female.                                           [R][Foreign set-II, 2016] Answer: Oxytocin acts on urine mus... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10164

Explain the events that follow upto fertilization when the sperms comein contact with the ovum in the fallopian tube of a human female.                                          [R][Foreign set-III, 2016] Answer: The secretion of the acros... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10165

(i)                          ... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10166

What happens to corpus luterm in human female if the ovum is (i) fertilized, (ii) not fertilized?                               [R][Outside Delhi set-I, 2015] Answer:

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NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10167

Where does fertilization occur in humans? Explain the events the occur during this process.                                   [R][Outside Delhi set-I, 2014] Answer: Fertilization in humans occurs at ampullary-isthmic junction of the fallo... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10168

Describe the process of parturition in humans.                                               [R][ Delhi set-I, 2015] Answer:

(i)   &nb... read more

NEET - Grade 12 - Biology - Human Reproduction - Study ref# 10169

(i)                         &nbs... read more

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