Ch. 5 – Plant Reproduction

A. Write T for True and F for False.

1. After fertilization, the ovary becomes the fruit 

2. Seeds have three seed leaves or cotyledons

3. The seed coat breaks and the young plant comes out

4. All the seeds grow into new plants

B. Give one example of the following.

1. Seeds dispersed by wind

2. Seeds dispersed by water

3. Seeds dispersed by animal

4. Seeds dispersed by the explosion of fruit

C. Write T for True and F for False.

1. The leaf of a potato plant can give rise to new plants

2. In rose, new plants grow from the buds growing along the margin of the leaf

3. Carrot plants can reproduce through their stems

4. Ferns reproduce through spores

SECTION - I

A. Choose the correct option.

1. The outer covering of the seed is called a

a) cotyledon b) seed leaf c) seed coat d) shoot

2. Seeds usually have one or two seed leaves called

a) roots b) seed coats c) seedlings d) cotyledons

3. New plants grow from the leaf buds of

a) potato b) Hibiscus c) Bryophyllum d) rose

4. In which of the following plants does dispersal by explosion takes place?

a) Dandelion b) Pea c) Coconut d) Berries

5. Mosses reproduce through

a) seeds b) stem c) spores d) roots

B. Choose the correct option to fill in the blank.

1. When the seedling grows, _____________________ (seed/root)

    shrinks and disappears.

2. _____________________ (Water/Wind) carries the maple seeds away

    from the parent plant.

3. The _____________________ (potato/beetroot) is a stem that grows into

    a new plant.

4. In onion, the new plant develops from a special structure called

    the _____________________ (eye/bulb).

5. _____________________ (Roses/Ferns) reproduce through spores.

C. Name the following.

1. Another term for seed leaves

2. The process by which a seed grows into a young plant

3. The fusion of the male and female gametes to form a zygote

4. The ovule develops into this after fertilization

5. The process by which the seeds are scattered away from the

    parent plant

D. Give two examples of the following.

1. Seeds dispersed by wind

2. Seeds dispersed by the explosion of fruit

3. Plants that can grow from stems

4. Plants that can grow from roots

5. Plants that reproduce through spores

SECTION II

E. Short answer questions.

1. Name the things essential for germination.

2. Define dispersal of seeds.

3. Name the different ways in which seeds are dispersed.

4. Name a special feature of seeds dispersed by wind.

5. What do you understand by vegetative reproduction?

    Give two examples

of plants that reproduce in this way.

6. What happens when a Bryophyllum leaf bud falls onto moist soil?

7. Describe how a carrot reproduces through root.

F. Long answer questions.

1. Describe the process of sexual fertilization in plants.

2. Describe the stages of germination.

3. Describe, with examples, any two ways of seed dispersal.

4. Explain, with examples, any two ways how plants grow from parts

    other than seeds.

5. Write an activity to show how vegetative reproduction takes place

    in carrot. Explain with the help of a diagram.