Which of these is a control setup? Ans asap!!
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ICSE 9 Biology
ICSE 9 Biology > Respiration in Plants
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Tissues - Plant and Animal Tissues
Vegetative Propagation and Micropropagation
Seeds -Structure and Germination
Introducing Biology
Respiration in Plants
The Respiratory System
Living, Non-Living and the Dead
Cell - The Unit of Life
Movement and Locomotion
The Flower
Five Kingdom of Classification
Nutrition
Digestive System
Skin - The Jack of All Trades
Pollination and Fertilisation
Hygiene - [A key to Healthy Life]
Diseases - Causes and Control
Ecosystems
Waste Generation and Management
Economic Importance of Bacteria and Fungi
Learn from our updated notes now. Aligned with 2020 board exam pattern.
1. Respiration
2. Experiments on Respiration in Plants
Respiration in plants can be investigated by carrying out experiments to show the production of carbon dioxide and heat and consumption of oxygen.
The below-mentioned four experiments show respiration in plants:
Experiment to show Oxygen is used during respiration:
Put some germinating seeds in a conical flask. With the help of a thread suspend a small tube containing KOH in the flask. Through the hole of the cork, pass a glass tube bent twice at right angles. One end of the tube is in the flask while the other end is in the beaker filled with water.Make the apparatus airtight. Note the level of water in the tube. Keep the apparatus for some time and note the position of water.
It is observed that water rises in the tube. The rise in the level of water is due to a partial vacuum created in the flask because the gas produced during respiration is absorbed by KOH.
This shows that germinating seeds produce CO2 during aerobic respiration as KOH can absorb CO2.
This is aerobic respiration as KOH can absorb CO2 produced by seeds using air available.