Question

(1) Name the salt, (ii) Write the equation for decom-position reaction.

Which bases are called alkalis? Give an example of alkali.

OR

2.

3. Write the names of two neutral oxides.

Name the products formed during reaction of magnesium metal with boiling water. 4. Where do plants get each of the raw materials required for photosynthesis?

5. Name the process in plants where water is lost as water vapour.

OR

Name the excretory unit present in an earthworm.​

Answer 1

Answer:

Earthworms (annelids) have slightly more evolved excretory structures called nephridia, illustrated in Figure 2b. A pair of nephridia is present on each segment of the earthworm. They are similar to flame cells in that they have a tubule with cilia. Excretion occurs through a pore called the nephridiopore.

Explanation:

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