Assignment E
Short Answer Questions
1. In a bisexual flower inspite of the young stamens being removed artificially, the flower produces
fruit. Provide a suitable explanation for the above situation.
2. Can you consider cell division as a type of reproduction in unicellular organism? Give one
reason.
3. What is a clone? Why do offsprings formed by asexual reproduction exhibit remarkable
similarity?
4. Explain how, offspring and parents of organisms reproducing sexually have the same number of
chromosomes?
5. Colonies of yeast fail to multiply in water, but multiply in sugar solution. Give one reason for
this.
6. Why does bread mould grow profusely on a moist slice of bread rather than on a dry slice of
bread?
7. Give two reasons for the appearance of variations among the progeny formed by sexual
reproduction.
8. In tobacco plant, the male gametes have twenty four chromosomes. What is the number of
chromosomes in the female gamete? What is the number of chromosomes in the zygote?
9. Why cannot fertilization take place in flowers if pollination does not occur?
10. Is the chromosome, number of zygote, embryonal cells and adult of a particular organism
always constant? How is the constancy maintained in these three stages?
11. Where is the zygote located in the flower after fertilization?
12. Reproduction is linked to stability of population of a species. Justify the statement.
13. How are general growth and sexual maturation different from each other?
14. Trace the path of sperm during ejaculation and mention the gland and their functions associated
with the male reproductive system.
15. What changes are observed in the uterus if fertilisation does not occur?
16. What changes are observed in the uterus subsequent to implantation of young embryo?
17. What are the benefits of using mechanical barriers during sexual act?
18. Draw a neat diagram of female reproductive system and label the following parts and mention
their functions
a. Site of production of egg
Short Answer Questions
1. In a bisexual flower inspite of the young stamens being removed artificially, the flower produces
fruit. Provide a suitable explanation for the above situation.
2. Can you consider cell division as a type of reproduction in unicellular organism? Give one
reason.
3. What is a clone? Why do offsprings formed by asexual reproduction exhibit remarkable
similarity?
4. Explain how, offspring and parents of organisms reproducing sexually have the same number of
chromosomes?
5. Colonies of yeast fail to multiply in water, but multiply in sugar solution. Give one reason for
this.
6. Why does bread mould grow profusely on a moist slice of bread rather than on a dry slice of
bread?
7. Give two reasons for the appearance of variations among the progeny formed by sexual
reproduction.
8. In tobacco plant, the male gametes have twenty four chromosomes. What is the number of
chromosomes in the female gamete? What is the number of chromosomes in the zygote?
9. Why cannot fertilization take place in flowers if pollination does not occur?
10. Is the chromosome, number of zygote, embryonal cells and adult of a particular organism
always constant? How is the constancy maintained in these three stages?
11. Where is the zygote located in the flower after fertilization?
12. Reproduction is linked to stability of population of a species. Justify the statement.
13. How are general growth and sexual maturation different from each other?
14. Trace the path of sperm during ejaculation and mention the gland and their functions associated
with the male reproductive system.
15. What changes are observed in the uterus if fertilisation does not occur?
16. What changes are observed in the uterus subsequent to implantation of young embryo?
17. What are the benefits of using mechanical barriers during sexual act?
18. Draw a neat diagram of female reproductive system and label the following parts and mention
their functions
a. Site of production of egg
