DAV CLASS 5 Science Solutions: Are you looking for DAV Science Books Solutions then you are in right place, we have discussed the solution of class 5 Science book chapter 2 which is followed in all DAV schools. Solutions are given below with proper Explanation please bookmark our website for further updates!! All the Best !!
A. Fill in the blanks.
1. Leaves are known as food factories of the plant.
2. Plants, like sweet potato reproduce through roots. ‘
3. Water and Carbon dioxide are the raw materials needed for photosynthesis.
4.Micropyle is a small hole present on the seed.
5. Movement of seeds, from one place to another is called Dispersal.
B. Match the following:
| Column 1 | Column 2 |
| type of reproduction without seeds | (e) vegetative reproduction |
| green pigment present in leaves | (a) chlorophyll |
| a fruit that does not bear seeds | (b) banana |
| reproduction through leaves | (c) bryophyllum |
| dispersal of seeds through cracking | (d) pea and ladyfinger |
C. Tick (✓) the correct option.
1. The small baby plant, coming out of a seed is known as the (a) Grain (b) Stomata (c) Root (d) Seedling
Ans. 1. (d) Seedling
2. The process, by which a plant make its own food, is called (a) Photosynthesis (b) Germination (c) Reproduction (d) Dispersal
Ans. 2. (a) Photosynthesis
3.Which of these plants has only one cotyledon? (a) Gram (b) Pea (c) Wheat (d) Bean
Ans. 3. (c) Wheat
4. For proper germination, a seed needs (a) Water only (b) Just the right temperature (c) Air only (d) Water, air as well as the
Ans. 4. (d) Water, air as well as the appropriate temperature
5. Lotus seeds are dispersed mainly through (a) Insects (b) Birds (c) Air (d) Water
Ans.5. (d) Water.
D. Answer the following questions in brief.
1. Name the pigment present in green leaves of a plant.
Ans. Chlorophyll
2. Why do some plants feed on insects?
Ans. Some plants grow in soil which is deficient in nitrogen salts. These plants eat insects to fulfill their need of nitrogen.
3. Name the two methods of reproduction in plants.
Ans. Two methods of reproduction in plants are as follows: (a) Reproduction through seeds (b) Reproduction through underground stem, stem cutting, roots and leaves.
4. State the conditions required for the proper germination of a seed.
Ans. Following conditions are required for the proper germination of seeds: (a) Air (b) Water (c) Right temperature
5. Name two plants that reproduce through stem cuttings.
Ans. Rose and Bougainvillea
E. Answer the following questions
1. Why do all seeds not germinate to form new plants?
Ans. Some of seeds may not be of good quality. Most of the seeds get eaten by animals. Some seeds may not get favourable conditions. So, all seeds may not germinate to form new plants.
2. Seeds do not germinate when they are kept in an ice-box or refrigerator. Why?
Ans. When seeds are kept in ice-box or refrigerator, they do not get proper temperature for germination. Hence, such seeds do not germinate.
3. State the importance of vegetative reproduction in plants.
Ans. Importance of vegetative reproduction: (a) This helps farmers to produce plants without seeds. (b) This helps in growing new plants in short period. (c) This helps to produce better variety of plants.
4. List any three natural ways of seed dispersal. Give one example for each of them.
Ans. Three natural ways of seed dispersal are as follows: (a) By wind: Madar (b) By water: Lotus (c) By animals: Papaya (d) By rupturing: Ladyfinger
5. How can one grow a rose plant without seeds?
Ans. One can take a stem cutting and insert it in soil. After some time, the stem cutting will produce new roots and shoots. Thus, a new plant grows from stem cutting of rose plant.
Chapter 1 |My Body |Class-5 DAV Science Question and Answer
Chapter 2 |Plants |Class-5 DAV Science Question and Answer
Chapter 3 |Forests |Class-5 DAV Science Question and Answer
Chapter 4 |Animals—Our Friends |Class-5 DAV Science Question and Answer
Chapter 5 |Food and Health |Class-5 DAV Science Question and Answer
Chapter 7 |Importance of Water |Class-5 DAV Science Question and Answer
Chapter 8 |Properties of Water |Class-5 DAV Science Question and Answer
Chapter 9 |Fuels |Class-5 DAV Science Question and Answer
Chapter 10 |Air |Class-5 DAV Science Question and Answer
Chapter 11 |Our Solar System |Class-5 DAV Science Question and Answer
Chapter 12 |Observing the Sky |Class-5 DAV Science Question and Answer