Experiments on photosynthesis - gases - class-X
| Description: experiments on photosynthesis - gases | |
| Number of Questions: 30 | |
| Created by: Nitesh Divan | |
| Tags: photosynthesis life processes life process: nutrition, transportation, respiration, excretion nutrition - food supplying system biology nutrition and respiration photosynthesis and respiration different types of nutrition in plants botany how plants grow plant nutrition |
The process in which liquid water changes into gas is called
During photosynthesis, oxygen in glucose comes from
It is advantageous to use a water plant to demonstrate photosynthesis other than a land plant because
The chemical compound used in the experiment to show that oxygen is evolved during photosynthesis is
In 1772, Joseph Priestley demonstrated that
Hydrilla leaf is used in an experiment to test that
Green plants, normally do not suffer from the deficiency of
How many molecules of water are needed by a green plant to produce one molecule of hexose reduce $6$ molecules of $CO _{2}$?
Oxygen evolution takes place during photosynthesis in green plants but not in bacterial photosynthesis, because _________________.
Match List-I with List-II and select the correct answer.
| List-I | List-II |
|---|---|
| a. Richnmond lang effect | $1$. Reversal of red-drop |
| b. Emerson effect | $2$. Inhabitation of glycolysis by oxygen |
| c. Pasteur effect | $3$. Inhibition of photosynthesis by oxygen |
| d. Warburg effect | $4$. Senscescence retardation in detached leaves |
The upper dormant seeds of cocklebur(Xanthium) germinate only under high oxygen levels. The oxygen is required for _______________.
A beaker is filled with water and twigs of Hydrilla are inserted in the funnel so that the cut ends are in the tube of the funnel and the funnel is put in the water. Then a test tube full of water is inverted over the inverted funnel. Air bubbles from the plant collect at the tip of the tube. This experiment demonstrates that oxygen is evolved during photosynthesis. But, if boiled water is used instead of pond water in which Hydrilla grows, then?
Before setting up an experiment to show that seeds release $CO _{2}$ during respiration, the
seeds should be :
Four sets of three precautions to be taken while setting up the experiment to show that $CO _{2}$ is evolved during respiration are given below. Find the correct set of precautions.
A student sets up the apparatus for the experiment to show that $CO _{2}$ is released during
respiration. After two hours he would observe :
Seeds that are taken in the flask during respiration experiment must be :
What happens if the process of photosynthesis in plants for the formation of carbohydrate ?
To show that $CO _{2}$ is released during respiration we take
In the experiment to show that $CO _{2}$, is given out during respiration the chemical filled in the small test tube is :
Moll's half experiment is performed to show that
In Moll's half leaf experiment, only that part of leaf will show blue colour which was ........... the bottle.
Path of carbon in photosynthesis was found by using
During day time, CAM(Crassulacean acid metabolizing): Plants procure $CO 2$ for photosynthesis from ____________.
Given below are assertions and reasons. Point out if both are true with reason being correct explanation (A), both true but reason is not correct explanation (B), assertion true but reason is wrong (C), both are wrong (D).
Assertion. Under conditions of high intensity and limited $CO _2$ supply, photorespiration has a useful role in protecting the plants from photo-oxidative damage.
Reason. If enough $CO _2$ is not available to utilise light energy for carboxylation to proceed, the excess energy may not cause damage to plants
Choose the correct answer from the alternatives given.
Molls experiment demonstrates the necessity of which of the following in photosynthesis
In the experiment " To show that $CO _{2}$ is given out during respiration" the water level in the bent tube rise after sometime because