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प्रश्न
Look at the diagram given below and answer the following question.
Soil fertility is increased by bacteria How?
उत्तर
Bacteria like Pseudomonas are used to fix atmospheric nitrogen in the soil for agriculture. So they increase soil fertility.
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संबंधित प्रश्न
Explain the following image in your own words.
Find the plant parts.
Fill in the blank by rearranging the letter in the bracket.
_____ is a primary producer (tanpl).
Take two potted plants. Keep one in sunlight and the other in a fully covered box. Water them regularly. After a week observe the plants.
| Before a week | After a week |
 |
 |
| What did you observe? | Plant in sunlight | Plant in box |
Stamen contains _______ grains.
Green plants need sunlight.
One of the following birds is an example of plant pollinator
______ is a natural science concerned with the study of life and living organisms.
The living world comprises plants and animals.
Plants can prepare ______.
Classify plants on the basis of flowers.
Give some examples of monocotyledonous plants and dicotyledonous plants.
Match the parts of plant given in Column I with their function in Column II.
| Column I | Column II | ||
| (a) | Flower | (i) | Excretion |
| (b) | Leaf | (ii) | Photosynthesis |
| (c) | Stem | (iii) | Reproduction |
| (d) | Root | (iv) | Bears branches |
| (v) | Anchorage | ||
Solve the crossword given in Figure as per the clues given below it.
Across
1. The term that describes upward movement of water in a stem.
3. The part of leaf which is attached to the stem.
5. This part is attached to the tip of filament.
Down
1. Plants that are weak and spread on the ground.
2. Ovules are present in this part of flower.
4. Is the broad part of leaf.
Fill in the blanks with the terms that are listed below.
| anther | male | ovary | ovule | petals | pistil | stamen | filament |
Sepals, (a)______ . stamens and (b)______ are the parts of a flower. Stamen is made up of (c)______ and (d)______ and it represents the (e)______ part of the flower. The female part of the flower is called the (f)______. The basal, swollen part of the pistil is called the (g)______ which contains the (h)______.
In vexillary type of aestivation, two lateral petals which overlap the two smallest anterior petals are called ______. This aestivation is characteristic feature of family ______.
