InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
The questions given below consist of an assertion and the reason. Use the following key to choose the apAssertion: Incident light is reflected in only one direction from a smooth surface.Reason: Since the angle of incidence and the angle of reflection are same, a beam of parallel rays of light falling on a smooth surface is reflected as a beam of parallel light rays in one direction only.propriate answer. |
|
Answer» (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (ii) The fusion involving two polar nucleus and a sperm nucleus, that occurs in double fertilization in a seed plant and results in the formation of endosperm , is called the TRIPLE fusion. (iii) Importance of forests. `**` Forest are the important component of our environment and are DOMINATED by microorganisms, flowering plants, shrubs, climbers and dense trees. `**` Forest provide a vast habitat for wild animals. `**` Forests help for the economic development of our country. `**` Forest are the source for a wide range of renewabel natural resource. `**` Forest provide wood, food , fodder, fibre and medicine. `**` They act as carbon sink, regulate climatic conditions, increase rainfall and reduce global warming. `**` Forests protect wild life and also acts as catchment for water conservation. `**` They prevent natural hazards like floods and landslides. `**` They play a vital role in maintaining the ecological balance. |
|