scsprjscienceclass5e

REVISION

Let us do a quick recap :-

Plants are the most important living organisms in the world.
Plants are usually grown from seeds.
Parts of a seed are :- seed coat, cotyledons and embryo.
Process in which a seed turns into a seedling is called GERMINATION ( radicle- root, plumule- shoot)
Condition for germination are air , water and warmth.
Scattering away of seeds from the mother plant - Dispersal.
Agents of dispersal - wind, water, animals , explosion.
Growing of plants from various parts- Vegetative Reproduction.
Factors affecting growth and development of plants- Soil , Climate , Seasons.
Plants grown in winter- Rabi crop , plants grown in summer- Kharif crop.
Fertilizers , manure enhance the growth of plants.
Insecticides , pesticides kill insects and pests .
Tips for healthy crop.

After reading the lesson once you can take a self test by answering the following questions in a separate sheet of paper.

If you get all answers correct, that means you have understood the lesson well.

SECTION - A

I. FILL IN THE BLANKS:-

1) The baby plant inside a seed is called __________

2) A dicot seed will have two __________

3) Seeds of lotus are spongy because they are dispersed by ___

4)Cotton plants best grow in _____ soil.

5) In fungi the ________ develop onto new plants.

II. MATCH THE FOLLOWING :-

1) Wheat -------- Salty soil

2) Potato -------- dispersed by explosion

3) Coconut -------- Rabi crop

4) Pea -------- Gammaxene

5) Insecticide -------- Underground stem

III. STATE TRUE OR FALSE :-

1) During germination the plumule comes out of the seed first.

2) Lily is a monocot plant.

3) If a seed grows under the mother plant it becomes more healthy.

4) Madar seeds are winged because they are dispersed by wind.

5) Tea plants grow well in moist soil of Assam and Darjeeling.

SECTION -B

IV. DEFINE THE FOLLOWING :-

1) Germination

2) Embryo

3) Dispersal

4) Vegetative reproduction

V. ANSWER THE FOLLOWING :-

1) What are the essential conditions for a seed to germinate ?

2) Write three tips for getting better yeild from crops.

3)What are rabi crops and karif crops?

4) Name the three parts of a seed.

5) Dispersal of seed is necessary for better growth of plants. Why?

SECTION - C

Answer these:-

1) Draw a neat labelled diagram of a seed.

2) A farmer must use good quality seeds for sowing . Why?

3) Coconut trees do not grow well in places like Delhi and Rajasthan. Why?

That's all for today.
Stay safe. God bless!!