Final recap : Class 10 Life Processes MCQ Quiz on What are Life Processes?

Below are the all the questions given here for your easy reference.

Q1. What are life processes?

Ans: Life processes are the maintenance functions of living organisms that prevent damage and breakdown.

Q2. From where does the energy needed for life processes primarily come?

Ans: The energy needed for life processes comes from outside the body of the individual organism.

Q3. What is the process commonly called "nutrition"?

Ans: Nutrition is the process of transferring a source of energy, called food, from outside the body of the organism to the inside.

Q4. Besides energy, what additional external raw material is needed for an organism's body to grow?

Ans: Additional raw material from outside the body is needed for growth.

Q5. What type of molecules is life on Earth dependent on, as mentioned in the sources?

Ans: Life on Earth is dependent on carbon-based molecules.

Q6. Why might outside sources of energy be quite varied?

Ans: Outside sources of energy may be varied because the environment is not under the control of the individual organism.

Q7. What must happen to varied outside energy sources once they are inside the body?

Ans: They need to be broken down or built up and converted into a uniform source of energy and usable molecules.

Q8. What is necessary for the breakdown or buildup of energy sources and their conversion to a uniform source?

Ans: A series of chemical reactions in the body are necessary.

Q9. Which type of chemical reaction is mentioned as one of the most common means to break down molecules?

Ans: Oxidising-reducing reactions are one of the most common means to break down molecules.

Q10. What do many organisms use from outside the body for the break-down of food sources for cellular needs?

Ans: Many organisms use oxygen from outside the body to break down food sources for cellular needs.

Q11. What is the process of acquiring oxygen from outside the body and using it to break down food sources for cellular needs called?
Ans: This process is called respiration.

Q12. Why might a single-celled organism not need specific organs for taking in food, gas exchange, or waste removal?

Ans: Because the entire surface of the organism is in direct contact with the environment.

Q13. What challenge arises for multi-cellular organisms regarding contact with the environment?

Ans: Not all cells in multi-cellular organisms are in direct contact with the surrounding environment.

Q14. Why will simple diffusion not meet the requirements of all cells in multi-cellular organisms?

Ans: Simple diffusion will not suffice because not all cells are in direct contact with the environment, making it too slow and inefficient.

Q15. What concept are we familiar with regarding the functions of various body parts in multi-cellular organisms?
Ans: We are familiar with the specialization of body parts in the functions they perform.

Q16. For multi-cellular organisms, what is expected regarding the uptake of food and oxygen?

Ans: The uptake of food and oxygen will be the function of specialized tissues.

Q17. What problem arises because food and oxygen are taken up at one place in the body of multi-cellular organisms?
Ans: The problem is that all parts of the body need food and oxygen, but they are taken up only at one place.

Q18. What does the situation where food and oxygen are taken up at one place but needed everywhere create a need for?

Ans: It creates a need for a transportation system to carry food and oxygen throughout the body.

Q19. What do chemical reactions using carbon sources and oxygen for energy generation create?

Ans: These reactions create by-products that are useless and potentially harmful to the cells.

Q20. What is the nature of the waste by-products created during energy generation?

Ans: The waste by-products are useless for the cells and could even be harmful.

Q21. Why are waste by-products needed to be removed from the body and discarded outside?

Ans: Because they are useless and potentially harmful to the cells.

Q22. What is the process of removing useless and potentially harmful waste by-products from the body called?

Ans: This process is called excretion.

Q23. In multi-cellular organisms, what is expected regarding excretion based on basic body design rules?

Ans: A specialized tissue for excretion will be developed.

Q24. If a specialized tissue for excretion is developed, what additional role will the transportation system need to perform?

Ans: The transportation system will need to carry waste from cells to the excretory tissue.

Q25. When must the maintenance functions of living organisms go on?

Ans: They must go on even when the organism is not doing anything, such as when sitting or sleeping.

Q26. Given that life on Earth depends on carbon-based molecules, what is true about most food sources?

Ans: Most food sources are also carbon-based.

Q27. Besides a uniform source of energy, what else must the broken down or built up energy sources convert to for the body's needs?

Ans: They must be converted into the kind of molecules the body needs to grow.

Q28. For a single-celled organism, what is the extent of its contact with the environment?

Ans: The entire surface of the organism is in contact with the environment.

Q29. What happens to the body design as the body size of an organism increases?

Ans: The body design becomes more complex.

Q30. How are the various processes discussed (nutrition, respiration, excretion, transport) described in relation to maintaining life?

Ans: These processes are essential to maintain life.