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Mention the name of organ
a. that provides nutrition to embryo.
b. site where fertilised egg gets implanted.
What is meant by DNA copying?
What is the shape of sperms and what is the advantage of this shape?
List any two contraceptive methods practiced only by women.
Why are papaya flowers called unisexual?
Name the organ in humans which produces
(i) male germ cell (ii) female germ cell.
Fallen leaves of Bryophyllum on the ground produce new plants whereas the leaves of rose do not? Explain this difference between the two plants.
How does the embryo get nourishment inside the mother’s body?
What changes are observed in the uterus if the fertilisation does not occur?
Distinguish between the functions of ovaries and testes.
In the given figure label the parts and mention their functions
i. Production of egg
ii. Site of fertilisation
iii. Site of implantation
iv. Entry of the sperms
Explain the phenomenon of regeneration with the help of a diagram. How is regeneration different from reproduction?
What is vegetative propagation? State two advantages and two disadvantages of this method.
How do organisms reproduce by fission? Write namesofany two organisms which reproduce by this method.
Differentiate between the fission of Leishmania and Plasmodium.
Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) ovary, (ii) male germ-cell, (iii) female germ-cell and (iv) ovule on it.
(a) Draw the longitudinal section of a flower and label the following parts.
(b) After fertilisation in a flower, mention the structures that develop into the embryo and seed.
Name the parts A, B and C shown in the diagram and write their functions.
What is reproduction? Explain two advantages of sexual reproduction over asexual reproduction.
Describe sexually transmitted diseases and mention the ways to prevent them.
Distinguish between pollination and fertilisation. Mention the site and product of fertilization in a flower.
Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.
What is menstrual cycle? Describe different changes during the menstrual cycle occurring in a woman.
Why is meiosis needed in species that reproduce sexually?
What are the various adaptations found in plants for cross pollination? Describe any two of them.
Distinguish between a gamete and zygote. Explain their roles in sexual reproduction.
How does fertilisation take place? Fertilisation occurs once in a month. Comment.
Write the functions of each of the following parts in a human female reproductive system:
iii. Fallopian tube
Write the structure and functions of placenta in a human female.