CBSE Class 12 Biology Sexual Reproduction In Human Beings Worksheet

Access the latest CBSE Class 12 Biology Sexual Reproduction In Human Beings Worksheet. We have provided free printable Class 12 Biology worksheets in PDF format, specifically designed for Chapter 1 Reproduction in Organisms. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Chapter 1 Reproduction in Organisms Biology Practice Worksheet for Class 12

Students should use these Class 12 Biology chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Chapter 1 Reproduction in Organisms, to help you prepare for school tests and final examination. Regular practice of these Class 12 Biology questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

Download Class 12 Biology Chapter 1 Reproduction in Organisms Worksheet PDF

 

REPRODUCTION IN HUMAN BEINGS
 
1 Write the function of fimbriae. 
 
2 Name the different layers of human uterus. Which one of these layers undergoe cyclic changes during menstrual cycle? identify the hormone essential for the maintenance of this layer.
 
3 Where are Leydig cells present? What is their role in reproduction? 
 
4 Describe the role of placenta as an endocrine tissue .
 
5 Why are the human testes located outside the abdominal cavity? Name the pouch in which they are present.
 
6 Differentiate between major structural changes in the human ovary during the follicular and luteal phase of the menstrual cycle.
 
7 Mention the fate of Corpus Luteum and its effect on the uterus in absence of fertilisation of the ovum in a human female.
 
8 Spermatogenesis in human males is a hormone regulated process. Justify. 
 
9 What happens to corpus luteum in human female if the ovum is (i) fertilized, (ii) not fertilized?
 
10 Draw a labelled diagram of the microscopic structure of a human sperm. 
 
11
CBSE Class 12 Biology Sexual Reproduction In Human Beings Worksheet 1
Read the graph given above and correlate the uterine events that take place according to the hormone levels on:
i) 6-15 days
ii) 16-25 days
iii) 26-28 days ( if the ovum is fertilised)
 
b) Specify the sources of the hormones mentioned in the graph.
 
12 Study the figure given below and answer the questions that follow:
CBSE Class 12 Biology Sexual Reproduction In Human Beings Worksheet 2
a) Name the stage of human embryo the figure represents.
b) Identify ‘a’ in the figure and mention its function.
c) Mention the fate of the inner cell mass after implantation in the uterus.
d) Where are the stem cells located in this embryo?
 
13 Mention the target cells of luteinising hormone in human males and females. Explain the effect and the changes which the hormone induces in each case.
 
14 Name the source of gonadotrophins in human females. Explain the changes brought about in the ovary by these hormones during menstrual cycle.
 
15 (a) Explain the events taking place at the time of fertilization of an ovum in a human female.
(b) Trace the development of the zygote upto its implantation in the uterus.
 
16 When and where are primary oocytes formed in a human female? Trace the development of these oocytes till ovulation ( in menstrual cycle). How do gonadotrophins influence this developemental process?
 
17 Explain the events in a normal woman during her menstrual cycle on the following days: (a) Pituitary hormone levels from 8 to 12 days. (b) Uterine events from 13 to 15 days. (c) Ovarian events from 16 to 23 days.
 
18 a) Write the specific location and the functions of the following cells in
 
human males :
(i) Leydig cells
(ii) Sertoli cells
(iii) Primary spermatocyte
 
(b) Explain the role of any two accessory glands in human male reproductive system

 

Please click on below link to download CBSE Class 12 Biology Sexual Reproduction In Human Beings Worksheet

Chapter 1 Reproduction in Organisms CBSE Class 12 Biology Worksheet

Students can use the Chapter 1 Reproduction in Organisms practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 12 Biology. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Chapter 1 Reproduction in Organisms

Our expert team has used the official NCERT book for Class 12 Biology to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Biology. You can get all this study material for free on studiestoday.com.

Extra Practice for Biology

To get the best results in Class 12, students should try the Biology MCQ Test for this chapter. We have also provided printable assignments for Class 12 Biology on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

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