1).Write a short note on bacteria with diagram.
2). What conditions are required for dispersion of seeds? Also demonstrate it with thw help of an experiment.
3). Describe any two principels of sustainable development briefly.
4).What is sustainable development? Mention any five principels of sustainable development.
Answers
Answer:
ans1- Bacteria are microscopic, single-celled organisms that thrive in diverse environments. These organisms can live in soil, the ocean and inside the human gut. Humans' relationship with bacteria is complex. Sometimes bacteria lend us a helping hand, such as by curdling milk into yogurt or helping with our digestion.
ans2-There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals. Some plants are serotinous and only disperse their seeds in response to an environmental stimulus.
ans3- The principles of sustainable development are as follows: Conservation of ecosystem. ... Conservation of biodiversity. Control of population growth.\
ans4- The former U.N. General-Secretary Kofi-Annan had identified five areas for the applicability of the principle of sustainable development. They are (1) water, (2) health, (3) power and energy, (4) Agriculture and (5) Bio-diversity.
Explanation:
Answer:
1.Bacteria are single celled microbes. The cell structure is simpler than that of other organisms as there is no nucleus or membrane bound organelles. ... Some bacteria have an extra circle of genetic material called a plasmid. The plasmid often contains genes that give the bacterium some advantage over other bacteria.
2.All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.
3.There are a few principles related to sustainable development. These can be summarized as follows:
Conservation of our ecosystem: The ultimate motive of sustainable development is to protect the ecosystem. Preservation of earth and its resources is essential.
Development of society: Sustainable development focuses on developing society by creating equal opportunities for everyone. From creating jobs to the reliable health system, everything gets included under this principle