Question: What do you mean by ‘stomata’ apparatus?
Answer: Stomata apparatus means stomata along with nearby guard cells and other cells.
Question: What are the main organs of the respiratory system?
Answer: Main organs that help in respiration are :
- Nostrils (The passages in the nose)
- Trachea (Windpipe)
Question: What chemical reaction occur during anaerobic respiration in yeast?
Answer: In yeast, the cellular glucose is converted into alcohol and carbon dioxide which give us energy.
Question: An athlete suffers from muscular cramps while running a race. How can you help him overcome the quips?
Answer: To relief from these cramps we should massage the affected part or take a hot bath.
Question: How does exchange of gasses occur in the following:
- Fish: fish have special structure called girls. Dissolved oxygen is used from the water entering the gills. Gills are well supplied with blood for exchange of blood.
- Cockroach: Cockroaches movement of draws air in and out of the opening called spiracles. These openings are present on the body surface and are connected internally with a network of branched air tubes (trachea) and their branches (Tracheoles).
Question: How are combustion and cellular respiration similar to each other? In what ways are they different?
Answer: Similarities – During cellular respiration the sugar molecules in food are form carbon dioxide and water and energy is given out.
C6 H12 O6+ 602 → 6CO2 + 6H2O + energy
This is similar to the chemical reaction that occurs during burning or combustion.