CBSE Class 10 Science Chapter-8 |How do Organism Reproduce | Important Questions
•Short Questions
1. Draw a labelled diagram of the longitudinal section of a flower.
2. What is vegetative propagation? Where this method of reproduction find its application ? List the advantages of vegetative propagation.
[Sample Paper; A.I. 2006, Comptt.]
3. Why is it said that, "sexual reproduction promotes diversity of characters in the offsprings" ? What are the advantages of sexual reproduction?
4. Differentiate between menarche and menopause.
5. Fertilization is possible if copulation has taken place during the middle of the menstrual cycle. Give reason.
6. (i) Which are the two main types of reproduction in living organisms?
(i) Classify the following under these two types : Amoeba, Frog, Earthworm, Yeast. [Delhi - 2006]
•Long Questions
1. What are the various methods which can be used for the regulation of child birth?
2. What is meant by secondary sexual characteristics? How these characteristics develop in human male and female?
3. What is meant by menstruation and menstrual cycle? Explain the sexual cycle in female?
4. How the process of fertilization takes place in plants? Draw a labelled diagram to explain the process.
5. Draw the diagram of reproductive system of human female. Label fallopian tube, uterus, cervix and vagina. What is ovulation and when does it take place during the menstrual cycle? Where does fertilization take place?
Multiple Choice Questions
1. Select the most appropriate choice out of the four given with every question.
(i) In the human female, fertilization of the ovum takes place in
(a) uterus
(b) ovary
(c) fallopian tube
(d) vagina
(ii) The process of release of the egg from the ovary is called
(a) menstruation
(b) ovulation
(c) oogenesis
(d) none of the above
(iii) The male sex hormone, testosterone, is secreted
(a) scrotum
(b) Leydig's cells
(c) vas deferens
(d) epididymis
(iv) The sperm storage organ in human males is
(a) testis
(b) vas deferens
(c) epididymis
(d) penis
(V) Which of the following is not a type of male accessory gland?
(a) Salivary gland
(b) Seminal vesicles
(c) Prostate gland
(d) Cowper's gland
(vi) Which of the following is a method of artificial vegetative propagation?
(a) Cutting
(c) Grafting
(b) Layering
(d) All of these
(vii) In which of the following leaves help in asexual reproduction by budding?
(a) Potato
(b) Sweet potato
(c) Bryophyllum
(d) None of these.
(viii) Endosperm nucleus in plants is formed by the fusion of male gamete with
(a) egg cell
(b) two polar nuclei with a male gamete
(c) pollen grain and stigma
(d) endosperm
(ix) Attainment of sexual maturity is called
(a) puberty
(b) adolescence
(c) growth
(d) development
(x) Appearance of first menstruation is called
(a) menopause
(b) menarche
(c) menstrual cycle
(d) all of those.
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