CLASS: X-SCIENCE-CHAPTER: HOW DO ORGANISMS REPRODUCE-SAMPLE PAPERS

CLASS: X-SCIENCE

CHAPTER: HOW DO ORGANISMS REPRODUCE

SAMPLE PAPERS

Time taken: 40minutes

Maximum marks: 25 ma

1.   Name two nucleic acids? (1)

2.   What happens during copying of DNA? (1)

3.   Why does organism reproduce? (1)

4.   What is binary and multiple fission? Name the organism in which they occur. (3)

5.   How do potato and Bryophyllum plants reproduce vegetatively? (3)

6.   Devise an experiment to show germination of gram seed. (3)

7.   Draw well labeled diagram of a bisexual flower. (3)

8.   What is self and cross pollination? (3)

9.   State the functions of

       a. Testis

       b. Ovaries

       c. Vas deferens

       d. Stamen

       e. Pistil (5)

10.   What are the different methods of contraception in males and female human beings? (3)