Question

Q.7-
Long answer type question-
How is water useful to plants?
2. What is an electromagnet?
3. What is the function of a speedometer?
4 What are periodic events? Give three examples?
Write a short note on sundials?
6 What is vegetative propagation?
7. Describe how some plants reproduce through roots, stems, or leaves.
5​

Answer 1

Answer:

Water is useful to plant because it helps in growth of a plant

Magnet made by using electricity or dry cell is called electromagnet

The function of speedometer is this is used to measure the speed of vehicle

The event which are conducted in periodic table is called events

Explanation:

Answer 2

Explanation:

1. Water is used for transpiration carrier of nutrients from the soil to green plant tissues. Water forms over 90% of the plant body by green or fresh weight basis. Plants can synthesis food through photosynthesis only in the presence of water in their system. Water helps to maintain the turgidity of cell walls.
2. An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole, denoting the center of the coil.
3. Speedometer, instrument that indicates the speed of a vehicle, usually combined with a device known as an odometer that records the distance traveled.
4. Examples of periodic motion include a rocking chair, swing, tuning fork, and a pendulum. A satellite orbiting our planet and a mass bouncing on a spring are also examples of periodic motion.
5. A sundial is a device that tells the time of day when there is sunlight by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the dial) and a gnomon, which casts a shadow onto the dial.
6. Vegetative reproduction is any form of asexual reproduction occurring in plants in which a new plant grows from a fragment of the parent plant or a specialized reproductive structure. Many plants naturally reproduce this way, but it can also be induced artificially.
7. In natural asexual reproduction, roots can give rise to new plants, or plants can propagate using budding or cutting. In grafting, part of a plant is attached to the root system of another plant; the two unite to form a new plant containing the roots of one and the stem and leaf structure of the other.