If the filament of Spirogyra is broken into fragments. What will you observe?

2

(a)

Give one difference between unisexual and bisexual flower.

2

(a)

Flowers are colourful and fragrant. Give reason supporting the statement.

2

(a)

Boojho had the following parts of a rose plant-a leaf, roots, a branch, a flower, a bud and pollen grains. Which of them can be used to grow a new rose plant?

2

(a)

A yellow powdery substance is present in the anther which participates in reproduction process. Name this substance.

2

(a)

In which part of flower does fertilisation occur?

2

(a)

Write the male and female reproductive parts present on the flowers.

2

(a)

Pollen grains are present inside anthers for long time yet they do not die. Why?

2

(a)

Name two plants in which pollination occurs by water.

2

(a)

Fruit is the ripened ovary of a flower. Explain.

2

(a)

What is the fate of ovary and ovule after pollination and fertilization in a flower?

2

(a)

If you keep a moist bread in open mould starts growing on it within few days. From where does this mould come from?

2

(a)

Explain two types of reproduction.

2

(a)

What is vegetative propagation?

2

(a)

What are fruits? What are fleshly and dry fruits?

2

(a)