Saved Bookmarks
| 1. |
1. describe different types of respiration.2. what is soil profile ? mention different layers of soil ?3. explain how metals are good conductors of heat .4. what is pollination? different between self and cross pollination give example. |
|
Answer» Answer: 1 Three types of respiration include internal, external, and cellular respiration. External respiration is the breathing process. It INVOLVES inhalation and exhalation of gases. Internal respiration involves gas exchange between the blood and body cells 2 The main layers of the soil are topsoil, subsoil and the parent rock. Each layer has its own characteristics. These features of the layer of soil play a very important role in determining the use of the soil. Soil that has DEVELOPED three layers, is mature soil 3 Metals are particularly good conductors of HEAT because their particles are very closely packed so the vibrations are passed on very quickly. They also contain large NUMBERS of free electrons. ... This makes them move faster and they travel through the metal, colliding with both atoms and other electrons. 4 Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is the TRANSFER of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species. |
|