Explain two types of reproduction.

What are MCBs ?How do they work?

Paheli does not have a night lamp in her room. She covered the bulb of her room with a towel in the night to get dim light. Has she taken the right step? Give one reason to justify your answer.

Flowers are colourful and fragrant. Give reason supporting the statement.

Draw the circuit diagram to represent the circuit shown in figure.

Why is vegetative propagation a preferred method of asexual reproduction?

Group the seeds given in figure (i) to (iii) according to their means of dispersion.
(a) Seed dispersed by wind.
(b) Seed dispersed by water.
(c) Seed dispersed by animal.

In the figure of a flower given below, label the parts whose functions are given below and give their names.
(a) The part which contains pollen grains.
(b) The part where the female gamete is formed.
(c) The female reproductive part, where pollen grains germinate.
(d) The colourful part of flower which attracts insects.

Pollination refers to the:

Coconut is dispersed by:

Which effect of current is used in an electric bulb?

Which mark is necessary on electric appliances?

When an electric current flows through a copper wire AB as shown in figure, the wire

If the number of turns in the coil of an electromagnet is more, the strength of the electromagnet will be

Which among the following have hairs on seed?

Which of the following statements is/are true for sexual reproduction in plants?
(i) Plants are obtained from seeds
(ii) Two plants are always essential
(iii) Fertilisation can occur only after pollination
(iv) Only insects are agents of pollination
Choose from the options given below.