CBSE Class10 board exam for the core subjects will be conducted in the months of March, 2019. So, students are left with only a few months to wrap up their preparations and revisions before the start of board exam. When we talk about the Science subject, class 10 students must prepare by doing a lot of practice problems as it will help to reinforce the concepts and improve the problem solving skills. This will ultimately help you to score high marks in exam.
Jagranjosh brings here a collection of questions based on important topics of Biology portion of CBSE Class Science. All these important questions have been assembled in the form of a practice paper which students may download free of cost. This practice paper will help students make an effective preparation for the upcoming Pre Board as well as the Board Examinations 2019. Questions asked in this practice paper will not only help students get an idea of the important topics to be prepared, but will also help them in understanding the depth with which these topics should be studied.
Few sample questions from the Question Paper are given below:
Q. Where does the process of fertilisation take place in human females?
Q. List the two ways which can be used to check the contamination of river water.
Q. In case of the sexual reproduction the number of chromosomes in parents and their offspring is the same. Justify this statement.
Q. What is water harvesting? How can this technique help in the conservation of water?
Q. What is the importance of D.N.A replication in asexual reproduction? Why is variation beneficial to the species? Explain with suitable example.
Q. (a) What do you mean by ‘Evolution’? List the various sources which provide evidences for the evolution.
(b) Give the evidence that the birds have evolved from reptiles.
Q. (a) Name the respective part of the human female reproductive system:
(i) where fertilisation of egg takes place.
(ii) where development of embryo takes place.
(iii) which provides all the nourishment to the developing foetus.
(b) Describe in brief what happens to the zygote after it gets implanted.
Q. Teacher asked the students to study the different parts of an embryo of a gram seed. The steps likely to be followed are listed in a haphazard manner:
(i) Soak the gram seeds in plain water and keep them overnight.
(ii) Cut open the soaked seed and observe its different parts.
(iii) Take some dry gram seeds in a petri dish.
(iv) Drain the excess water.
(v) Cover the soaked seeds with a wet cotton cloth and leave them for a day.
The correct sequence of these steps is:
(a) iii, I, v, iv, ii
(b) iii, I, ii, iv, v
(c) iii. iv, v, i, ii
(d) iii, i, iv, v, ii
Download the complete practice paper from the following link:
From last academic session, 2017-2018, the Central Board of Secondary Education (CBSE) has amended the assessment structure in class 10 by making the board exams mandatory for all. The updated the assessment scheme in CBSE class 10 has an 80 marks component for class 10 Board examination in all scholastic subjects along with a 20 marks component of Internal Assessment. To do well in the changed exam structure students must have a good hold over the important topics and questions for which solving more and more practice papres is the best way.
To get more of such useful articles for the preparation of CBSE Class 10 Board Exam 2019, click here.