Sowing Seed

Q.

What is hybridization?

1. The process of cultivation of disease-resistant crops.

2. The process of cultivation of high yield crops.

3. The process of developing of a crop having favourable traits from parent plants by crossing them.

4. The process of cultivation of seeds available in the market.

Q.

Name the different methods of sowing seeds.

Q.

How does the traditional sowing tool work?

Q.

Mention five reasons to show importants of ploughing?

Q.

Discuss with an example how hybridization is used for developing new varieties of crops with desired characteristics?

Q. Question 5
Read the statements given below:
(i) Seeds require moisture for germination.
(ii) Plants can absorb nutrients mostly in dissolved form.
(iii) Irrigation protects crops from both frost and hot air currents.
(iv) Irrigation improves soil texture.

Choose the combination of statements which indicate the need to irrigate crops.
(a) i and ii
(b) i, ii, iii
(c) i, ii, iii, iv
(d) i and iii

Q. In __ (broadcasting/seed drilling) method, an iron drill is used to sow the seeds.

Q. How can a seed drill can protect damage from birds

Q.

What happens when seeds are placed in water?

1. All seeds settle at the bottom

2. Bad quality seeds settle to the bottom and good quality seeds float on water

3. All seeds float on water

4. Bad quality seeds float on water and good quality seeds settle to bottom

Q.

The seeds have to be sown ____ the other seeds.

1. behind

2. far from

3. in front of

4. very close to

Q.

Which of the following is not used for crop improvement?

1. Inbreeding

2. Introduction

3. Hybridization

4. Mutations

Q.

Seeds fallen in a flower-bed from the previous crop usually do not germinate until the next sowing season.

1. True
2. False

Q. What do you think are the drawbacks of seeds being unevenly distributed in a field while sowing?

Q. Find the correctly matching pair from the following.

1. Plough - Loosening up of soil
2. Hoe - Removing weeds
3. Cultivator - Loosening up of soil
4. Harvester - Sowing

Q. Why is farmland ploughed before sowing seeds?

Q. Good quality seeds are selected in

1. Gene bank
2. Seed bank
3. None of the above
4. Quarantine lab

Q. What is advantage and disadvantage of production of genetically modified crops

Q. Write a paragraph in your own words on the following.

Q. Sowing is done in large scale by

1. Manual sowing
2. Neem leaves
3. Seed drill
4. Thulsi leaves

Q.

Take two beakers and mark them A and B. In beaker A, place some seeds of green gram on the dry cotton wool. In beaker B, place some seeds of the green gram on moist cotton wool. Keep both the beakers in an ordinary room. What will be observed by this process?

1. Seeds in beaker A will germinate, but seeds in beaker B will not germinate

2. Seeds in beaker B will germinate but seeds in beaker A will not germinate

3. Seeds in both the beaker A and B will germinate

4. Seeds in both the beaker A and B will not germinate

Q. State whether the following statements are true or false.
Statement 1:Seed test is a method of separating healthy seeds from the damaged ones.
Statement 2: Healthy seeds will sink in water.

1. Statement 1: False; Statement 2: True​
2. Statement 1: True; Statement 2: False​
3. Statement 1: False; Statement 2: False​
4. Statement 1: True; Statement 2: True​

Q.

Can I get an explanation video of hybridization?

Q.

1. true
2. false

Q.

Sowing of seeds manually or by seed drills is called _________?

Q.

How manure are useful to increase the gaps of the soil ?

Q. The seed drill used to sow mustard seeds is

1. Pneumatic seed drill
2. Zero till drill
3. Plain seed drill
4. None of the above

Q. Write a short note on
A. Seed sowing
B. Threshing

Q. Define Tiphan, Pickaxe, Spade, Scythe.

Q. Gymnosperms bear separate male and females flowers called as

1. Cones
2. Pines
3. Gametes
4. All of the above

Q. Why do we call the seeds of gymnosperms as naked?