HOW DO ORGANISM REPRODUCE? 10

PRACTICE PAPER

SUB : BIOLOGY (2020)
CLASS X                HOW DO ORGANISM REPRODUCE?                         
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I. Very short answer type questions:

1. Cell division is a type of reproduction in unicellular organisms. Justify. 
2.  List two functions performed by ovaries in human females. 
3. What happens when an egg is not fertilized?
4.  Name the plant that reproduces vegetable by leaf.
5.  Name the body parts where fertilization occurs in human females.
6.  Why is DNA copying necessary during reproduction? Or what is the importance of DNA copying in reproduction?
7. No two individuals are absolutely alike in a population. Why?
8.  Name the parts where sperms are formed in a male's body and eggs are formed in a female's body.
9.  State the number of male gametes produced by each pollen grains.
10.  What is the function of petals in a flower? 
11. Write the full form of IUCD and HIV.
12. How is the process of binary fission different in Amoeba and leishmania? 
13. List two preparation showed every month by the uterus in anticipation of pregnancy in humans.
14. Mention the two functions of human testes.
15. Trace the path of sperm from where they are produced in the human body to exteriors.
16. What is the role of seminal vesicles and the prostate gland in the human male reproductive system?
17. An organism which is a worm has very simple eyes, that are really eye spot which detects light. Name the organisms.
18. What is the main difference between sperm and egg of humans? Write the importance of this difference.
19. "The chromosomal number of the sexual products producing parents and their offspring is the same". Justify this statement.
20. Draw a labeled diagram to illustrate budding in Hydra.
21. List four advantages of vegetative propagation.
22. List four modes of Asexual Reproduction.
23. Differentiate between binary and Multiple Fission.
24. List two advantages of growing grapes or banana plants through vegetative propagation.

II. Short answer type questions: 

1. Name the type of sexual reproduction seen in Plasmodium and planaria.
2. What is the fate of the ovule and ovary in a flower after fertilization? How is the process of pollination different from fertilization?
3. In the bisexual flower in spite of the young stamen beings removed artificially, the flower produces fruits. Provide a suitable explanation for the above situation.
4. Identify among the following organism which is reproduced by Sexual and which by Asexual method.
   Amoeba,  human beings, whale, hydra, dog,  spirogyra.
5. Can you consider cell division as a type of reproduction in unicellular organisms? Give one reason.
6. Write two functions of each (i) testes (ii) ovaries.
7. Name any two sexually transmitted diseases. How do these infectious diseases spread from one person to another? Give two symptoms of STDs.
8. Differentiate between vas deference and fallopian tube.
9. Can termination of pregnancy be misused by people? Justify your answer with reason.
10. Explain how offspring and parents of organisms reproducing sexually have the same number of chromosomes?
11. List two suitable difference between pollen grain and ovule.
12. Which part or organs of the human reproductive system perform the following functions:
13. (i) Site of implantation of gamete. (ii) The entry of sperms in the female reproductive system.
14. Give anyone the difference between radical and plumule.
15. Which part or organ of the human reproductive system performs the following: (i) Site of fertilization (ii) Production of ova.
16. State a difference between unisexual and bisexual flowers.
17. What is mensuration? Explain why it occurs?
18. What is meant by DNA copying? Mention its importance in reproduction. 
19. Explain why does menstruation occurs in human females.
20. Fallen leaves of Bryophyllum on the ground produce new plants whereas the leaves of rose do not. Explain this difference between the two plants.
21. How does the embryo get nourishment inside the mother's body?
22. What is meant by vegetative reproduction? How will a plant be benefited if it reproduces by vegetative propagation?
23. What is placenta? Mention the functions of (i) placenta (ii) fallopian tube in the human female reproductive system?
24. List any two contraceptive methods practiced only by women. Mention how these methods work?
25. Explain the process of regeneration in planaria. How is this process different from reproduction?
26. List any two modes of asexual reproduction in animals. Under which mode of reproduction is vegetative propagation placed and why?
27. List two advantages of vegetative propagation.
28. How do leishmania and plasmodium reproduce? State one difference in their mode of reproduction.
29. What is the gestation period? If a woman is using a copper T, will it help in protecting her from sexually transmitted diseases?

III. Long answer type questions: 

1. Justify the following statements "The use of the contraceptive method has a direct effect on the health and prosperity of the family"
2. Which species is likely to have a better chance of survival - the one reproducing asexually or one reproduction sexually? Justify your answer.
3. What is the effect of DNA copying, which is not perfectly accurate in the reproduction process? 
4. How does the amount of DNA remain constant though each new generation is a combination of DNA copies of two individuals?
5. Draw the diagram to explain the regeneration that takes place in each of the body parts of planaria when its body is out into pieces. Name any other organisms in which a similar process can be observed.
6. Write the name of the part of a flower that serves as the same function the following do in the animals: (i) testes (ii) sperm (iii) ovary (iv) egg. State the functions of flower in the flowering plants.
7. Define the following process of sexual reproduction (i) Spore formation (ii) Regeneration (iii) Multiple Fission.
8. Describe in brief the function of various parts of the female reproductive part of a bisexual flower.
9. Write two examples each of sexually transmitted disease caused by virus and bacteria.
10. Explain how the transmission of AIDS disease is prevented.
11. Name the following (i) Threadlike nonreproductive structures represent in Rhizopus. (ii) Blobs that develop at the tips of the nonreproductive thread in Rhizopus. (iii) Explain the structure and the function of the structure released from the Blobs in Rhizopus.
12. Name three parts of the carpel and given one function of each :(i) Ovary (ii)Style (iii) Stigma.
13. Is copying a DNA formed during reproduction identical to the original cell?  Give a reason for the support of your answer and explain how DNA copying is beneficial for the species.
14. Mention two secondary sexual characters in human males. Why testes in the male body are extra-abdominal. Write the dual purpose served by urethra in the male.
15. What is vegetative propagation? When it is used? List two uses.
16. Distinguish between self-pollination and cross-pollination. How does the fusion of male and female gametes take place in plants?
17. Explain the following:(i)Testes and Ovaries are considered as a primary sex organ. (ii)  Advantage of seed production in plants (iii) Vas defense in long in human males.
18. Name an organism that reproduces by regeneration.  Name any two plants that reproduce by grafting.
19. List any two benefits to an organism that reproduce through spores.
20. With the help of a diagram showing a sexual reproduction in rhizopus. How this method is disadvantageous for rhizopus?
21. Differentiate between binary and multiple fission. Name an organism that reproduces by multiple fission. Vegetative propagation is beneficial to plants that are propagated asexually. Give two advantages.
22. Give reasons:(i) Wind act as pollinating agents (ii) Variation is essential and beneficial to the species. (iii) The use of condoms prevents pregnancy.
23. Draw neat labeled diagram for a germinated seed and level radicle plumule and cotyledon. Mention functions of each of these parts.
24. What is the placenta explain its role in the development of a human embryo?
25. State, in brief, the function of following organs in the human male reproductive system :(i) Ovary (ii) Fallopian tubes, (iii)  Uterus. 
26. How many eggs are produced every month by either of the ovaries in human females? Where does fertilization take place in the female reproductive system? What happens in the case of an egg released by the ovary is not fertilized.
27. Why is vegetative propagation practiced for going some type of plant? Name the different parts of a flower that has themselves. List any two agents of pollination.
28. State one functions of each of the following parts of a human male reproductive system.
    (i) Vas defense (ii) Testes (iii) Posted gland. 
29. Name the reproductive part of the human female reproductive system:
    (i) that produces eggs 
    (ii) where the fusion of eggs and sperms takes place, and 
    (iii)where zygote gets implanted.
30. Describe in brief what happens to the zygote after it gets implanted?
31. Write the name of the male reproductive organ that produces sperm and secretes hormones. Name the hormone secreted and state its functions.
32. Write the site of fertilization and the part where the zygote gets implanted in the human females.
33. Draw a diagram showing the germination of pollen on the stigma of a flower. Level pollen grains, male germs cell, pollen tube and female germ cells in the above diagram. Define fertilization in plants.
34. What are the different methods of asexual reproduction? Explain budding and regeneration with diagrams.
35. Name the following: Organism which reproduce by :
    (i) Binary fission 
    (ii)multiple fission 
    (iii) budding 
    (iv) fragmentation 
    (v) spore formation.
36. Name to sexually transmitted disease. Why parental determination is prohibited by law? What are the different methods of contraception?
37. Differentiate between the following:
    (i) Pollen tube and style,
    (ii) Fission in Amoeba and plasmodium.
    (iii)Fragmentation and regeneration.
    (iv) Bud of Hydra and bud of Bryophyllum 
    (v) Vegetative propagation and spore formation.
38. List three distinguishing features between sexual and asexual types of reproduction.
39. Explain why variation is observed in the offspring of sexually reproducing organisms?
40.  What is pollination? How does it occur in plants? How does pollination lead to fertilization? Explain.
41. List two advantages of sexual reproduction over Asexual Reproduction. 
42. How will an organism be benefited if it reproduces through spores? List two contraceptive methods and state two benefits of adopting these methods.
43. (i) Draw a neat diagram of the human male reproductive system and label the parts performing the following functions. (a)Production of sperms (b) Gland which provides fluid. (c) provides low temperature for the production of sperm (d) common passage for sperm and urine. (ii) Name a sexually transmitted disease and a method to avoid it.
44.  In the diagram of the human female reproductive system given below:   (i)Level the part A and B (ii) Name the hormones produced by organ X (iii)Mention the name of the substance that is transported by tubes (a)C and(b) D.     
45. Name the parts A, B, and C shown in the given diagram and state one function of each part.

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Chapter 2 - Acid, Bases and Salt	Quick View	Questions with Solutions
Chapter 3 - Metal and Non-metals	Quick View	Questions with Solutions
Chapter 4 - Carbon and it's compound	Quick View	Questions with Solutions
Chapter 5 - Periodic Classification of Elements	Quick View	Questions with Solutions
Chapter 6 - Life Processes	Quick View	Questions with Solutions
Chapter 7 - Control and Co-ordination	Quick View	Questions with Solutions
Chapter 8 - How do Organisms Reproduce?	Quick View	Questions with Solutions
Chapter 9 -  Health and Heredity	Quick View
Chapter 10 -  Reflection and Refraction	Quick View	Questions with Solutions
Chapter 11 -  Human Eye Colourful World	Quick View	Questions with Solutions
Chapter 12 -  Electricity	Quick View	Questions with Solutions
Chapter 13 -  Magnetic Effect of Electric Current	Quick View	Questions with Solutions
Chapter 14 -  Sources of Energy	Quick View
Chapter 15  - Our Environment	Quick View
Chapter 16 - Management of  Natural  Resources	Quick View