HOW DO ORGANISMS REPRODUCE?
PREVIOUS YEAR QUESTIONS
PREVIOUS YEAR QUESTIONS
1. Name two plants that are grown by vegetative propagation.
2. What is reproduction? Explain two advantages of sexual reproduction over asexual reproduction
3. What is reproduction? Mention the importance of DNA copying in reproduction.
4. List any two differences between pollination and fertilization. (CBSE2008)
5. Name two sexually transmitted disease caused due to infection and viral infection. How it can these be prevented?
6. Explain the terms:
a. Implantation
b. Placenta
c. What is the average duration of human pregnancy?
7. Why is DNA copying is an essential part of the process reproduction?
8. List any four methods of contraception used by humans. How does their use have a direct effect on the health and prosperity of a family?
9. Define the terms pollination and fertilization. Draw a diagram of a pistil showing pollen tube growth into the ovule and label them:
OR
Describe in brief the role of (i)testis (ii) seminal vesicle, (iii) vas deferens, (iv)ureter and (v) prostate gland in human male reproductive system.
10. (a) Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.
(b)Write the names of male and female reproductive parts of a flower.
OR
(a)What is fragmentation in organisms? Name a multicellular organism which reproduces by this method.
(b)What is regeneration in organism? Describe regeneration in Planaria with the help of a suitable diagram.
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