Asexual reproduction takes place through budding in

1

(a)

amoeba

(b)

yeast

(c)

plasmodium

(d)

leishmania

Which of the following is not a part of the female reproductive system in human beings?

1

(a)

Ovary

(b)

Uterus

(c)

Vas deferens

(d)

Fallopian

In a flower, the parts that produce male and female gametes (germ cells) are

1

(a)

stamen and anther

(b)

filament

(c)

anther and ovary

(d)

stamen and style

Characters transmitted from parents to offspring are present in

1

(a)

cytoplasm

(b)

ribosome

(c)

golgi bodies

(d)

genes

A feature of reproduction that is common Amoeba, Spirogyra and Yeast is that

1

(a)

they reproduce asexually

(b)

they are all unicellular

(c)

they reproduce only sexually

(d)

they are all multicellular

In Spirogyra, asexual reproduction takes place by

1

(a)

breaking up of filaments into smaller bits

(b)

division of a cell into two cells

(c)

division of a cell into many cells

(d)

formation of Young cells from older cells

The ability of a cell to divide into several cells during reproduction in Plasmodium is called

1

(a)

budding

(b)

reduction division

(c)

binary fission

(d)

multiple fission

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

The number of chromosomes in parents and offspring of a particular species remains constant due to

1

(a)

doubling of chromosomes after zygote formation

(b)

halving of chromosomes during gamete formation

(c)

doubling of chromosomes after gamete formation

(d)

halving of chromosomes after gamete formation

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

1

(a)

filaments

(b)

hyphae

(c)

rhizoids

(d)

roots

What is the importance of DNA copying in reproduction?

2

(a)

What is the role of the seminal vesicles and the prostate gland?

2

(a)

Colonies of yeast fail to multiply in water, but multiple in sugar solution.Give one reason for this.

2

(a)

What changes are observed in the uterus subsequent to implantation of young embryo?

2

(a)

In the given figure, label and identify the parts.
(a) Site of fertilisation
(b) Production of eggs
(c) Site of implantation
(d) Entry of sperm

2

(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.

5

(a)

Distinguish between a gamete and zygote.Explain their roles in sexual reproduction.

5

(a)

What are various ways to avoid pregnancy?Elaborate any one method.

5

(a)

Describe sexually transmitted diseases and mention the ways to prevent them.

5

(a)

Reproduction is essentially a phenomenon that is not survival of an individual but for the stability of a species.Justify.

5

(a)

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)