Q5. Answer the given questions.
1. What is called the connecting link between living and non-living things?
2. Name the process by which living things obtain energy from food.
3. Are wheat grains stored in gunny bags living? Why? Why not?
4. Why is mercury used in thermometers?
Answers
Answer:
1-A Virus remains as a particle or non-living entity when not in contact with a host, as soon as it enters the host system, it replicates like a living organism. Hence, it is a connecting link between living and non-living.
2-The flow of energy through living things begins with photosynthesis, which creates glucose. In a process called cellular respiration, organisms' cells break down glucose and make the ATP they need.
3-Wheat grains stored in gunny bags are non-living. When they are provided with optimum conditions of temperature, water, oxygen and light, they will germinate and give rise to a new plantlet.24-Aug-2019
4-Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.11-Feb-2007.
Answer:
1) A Virus
2) Photosynthesis
3) Non Living
4) Because it has high coefficient of expansion
Explanation:
1) A Virus remains as a particle or non-living entity when not in contact with a host, as soon as it enters the host system, it replicates like a living organism. Hence, it is a connecting link between living and non-living.
2)The flow of energy through living things begins with photosynthesis, which creates glucose. In a process called cellular respiration, organisms' cells break down glucose and make the ATP they need.
3) Wheat grains stored in gunny bags are non-living. When they are provided with optimum conditions of temperature, water, oxygen and light, they will germinate and give rise to a new plantlet
4) Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.