Sharya Academy

https://docs.google.com/forms/d/e/1FAIpQLSdjq2Xn15CblgqWhSx3IGMbxrnVsY4qhA8QsUCEh97VgcVXwQ/viewform?usp=sf_link
click the link and asses your preparation

Life Processes | Test | Class X Objectives

An organism of reproducing by two reproduction methods one similar to the in and the other similar to the reproduction in is:
a. Spirogyra
b. Hydra
c. Bryophyllum
d. Paramecium

Give the respective used for studying:
(a) the by which are created and and
(b) the development of new type of organisms from the ones.
Answer:
(a) Heredity is the mechanism by which variations are created and inherited.
(b) Evolution is the process in which development of new type of organisms takes place from the existing ones.

The of of from the o***y is called
a. menstruation
b. reproduction
c. insemination
d. ovulation
Answer: Ovulation

of business are the objectives of facing the challenges of global
market. Some of the global objectives are:
(i) making available globally competitive goods and services; and
(ii) reducing disparities among rich and poor nations by expanding its operations

How is of carried out?
Answer
Aluminium reacts with air and forms a thin layer of aluminium oxide on it. This layer of oxide prevents further reactions and protects the metal from corrosion. If this oxide layer formation is more uniform, the metal below the layer would be well-protected. This can be formed with the help of a process called anodising. In this process, electric current is passed through sulphuric acid, utilising aluminium as an anode. Oxygen is liberated at the anode and it reacts with aluminium and forms a uniform oxide layer of aluminium, which protects the metal from corrosion. This is how anodising of aluminium is done.