Asexual reproduction takes place through budding in

1

(a)

amoeba

(b)

yeast

(c)

plasmodium

(d)

leishmania

The anther contains

1

(a)

sepals

(b)

ovules

(c)

carpel

(d)

pollen grains

Characters transmitted from parents to offspring are present in

1

(a)

cytoplasm

(b)

ribosome

(c)

golgi bodies

(d)

genes

The correct sequence of reproductive stages seen in flowering plants is

1

(a)

gametes, zygote, embryo, seedling

(b)

zygote, gametes, embryo, seedling

(c)

seedling, embryo, zygote, gametes

(d)

gametes, embryo, zygote, seedling

InRhizopus, tubular thread-like structures bearing sporangia at their tips are called

1

(a)

filaments

(b)

hyphae

(c)

rhizoids

(d)

roots

What happen when a mature program filament attains considerable length?

1

(a)

When a mature spirogyra filament attains considerable length, it breaks up into smaller fragments or pieces, and each fragment grows into a new filament or individual

Name the information source of making proteins in the cell. State two basis events in reproduction.

1

(a)

The DNA in the cell nucleus is the information source of making proteins.
The two basic events in reproduction are:
(i) Creation of a DNA copy.
(ii) Additional cellular apparatus by the cell involved in the process.

State what type of method is used for growing jasmine plant.

1

(a)

Artificial methods of vegetative propagation like layering is used for growing jasmine plant.

List the function of human female reproductive system.

1

(a)

Two functions of ovary:
To produce female gamete ovum
To secrete female hormones estrogen and progestrone.

Name the life process of an organisms that helps in the growth of its population.

1

(a)

Reproduction is the process that helps in the growth of population of an organism.

What is the importance of DNA copying in reproduction?

2

(a)

How does binary fission differ from multiple fission?

2

(a)

What are the changes seen in girls at the time of puberty?

2

(a)

Why does menstruation occur?

2

(a)

How does reproduction help in providing stability to the population of species?

2

(a)

Explain how, offspring and parents of organisms reproducing sexually have the same number of chromosomes?

2

(a)

Why cannot fertilisation take place in flowers if pollination does not occur?

2

(a)

Define the terms unisexual and bisexual giving one example of each.

2

(a)

List any four modes of asexual reproduction.

2

(a)

List two advantages of vegetative reproduction practiced in case of an orange plant.

4

(a)

"The chromosomal number of the sexually reproducing parents and their offspring is the same".Justify this statement.

4

(a)

Would a Planaria cut vertically into two halves regenerate into two individuals? Complete Figure 'D' and 'E' by indicating the regenerated regions.

4

(a)

Name the parts A, B and C shown in the following diagram and state one function of each.

4

(a)

Write two points of difference between asexual and sexual types of reproduction. Describe why variations are observed in the offspring formed by sexual reproduction.

4

(a)

1. List four points of significance of reproductive health in a society. Name any two areas related to reproductive health which have improved over the past 50years in our country.

   5

   (a)

2. Why are budding, fragmentation and regeneration all considered as asexual types of reproduction? With neat diagrams explain the process of regeneration in Planaria.
   

   5

   (a)

(a)Name the parts labelled A, B, C, D and E.
(b)Where do the following functions occur?
  (i) Production of an egg
 (ii) Fertilisation
(iii) Implantation of the zygote.
(c) What happens to the lining of uterus:
 (i) before release of a fertilised egg?
(ii) if no fertilisation occurs?

5

(a)