Description : Prove with the help of experiment that Carbon dioxide is necessary for photosynthesis?
Last Answer : i) Take a de-starch potted plant. ii) Put some potassium hydroxide in flask and put a cork on its mouth. iii) Place the plant in light for photosynthesis. iv) Select a leaf of plant ... flask stored all of the Carbon dioxide and due to absence of carbon dioxide no photosynthesis takes place.
Description : Prove with experiment that chlorophyll is necessary for photosynthesis?
Last Answer : i) De-starch a leaf of potted plant by wrapping it in aluminum foil. ii) Remove the leaf from plant. iii) Its outline is carefully drawn to note the position of chlorophyll. iv) ... vii) If photosynthesis is possible without chlorophyll than white part should also turn blue.
Description : Select the correct statement: (1) C4 pathway for. CO2 fixation were discovered by Hatch and Slack (2) CO2 is essential for photosynthesis (3) Addition of sodium carbonate in water retards photosynthetic rate in vallisneria (4) Phloem is the principal pathway for translocation of solutes
Last Answer : Ans. ((c))
Description : Which of the following provides energy for photosynthesis? (1) Water (2) Sunlight (3) Chlorophyll (4) Carbon dioxide
Last Answer : (2) Sunlight Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the ... is therefore: Carbon dioxide + electron donor + light energy -4 carbohydrate + oxidized electron donor.
Description : The source of oxygen generated during photosynthesis is: (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells
Last Answer : (1) water Explanation: The source of oxygen produced during photosynthesis is the splitting of water molecule into hydrogen and oxygen. Photosynthesis uses carbon dioxide and water, releasing ... inside organelles called chloroplasts, while in bacteria they are embedded in the plasma membrane.
Description : The oxygen liberated during photosynthesis comes from (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll
Last Answer : Water
Last Answer : Sunlight
Description : The source of oxygen generated during photosynthesis is : (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells
Last Answer : water
Description : Prove with experiment that light is necessary for photosynthesis?
Last Answer : i) De-starch a potted plant by keeping it in dark for two days. ii) Then transfer it to light and select two leaves of this plant for experiment iii) Now wrap one by black paper. ... blue while other part remain brown. viii) This shows that light is necessary for photosynthesis.
Description : Chlorophyll is essential to photosynthesis because it traps the needed?
Last Answer : Chlorophyll traps the light energy from the sun
Description : In addition to carbon dioxide and water, state two other conditions necessary for the process of photosynthesis to take place. -Science
Last Answer : Sunlight and chlorophyll.
Description : Apical cell theory best explains the development in
Last Answer : Apical cell theory best explains the development in – Cryptogams
Description : Tunica Carpus theory best explains the apical meristem of
Last Answer : Tunica Carpus theory best explains the apical meristem of - Angiosperms
Description : Chief air pollutant which is likely to deplete ozone layer is a) Sulphur dioxide b) Carbon dioxide c) Carbon monoxide d) Nitrogen oxides and Fluorocarbons.
Last Answer : d) Nitrogen oxides and Fluorocarbons
Description : The factor influencing process of flowerings is: (a) Amount of chlorophyll (b) Soil water (c) Soil pH (d) Photoperiod
Last Answer : Ans. ((d))
Description : The site for light reaction of photosynthesis is: (b) Grana (b) Stoma (c) ER (d) Cytoplasm
Last Answer : Ans. ((a))
Description : The empirical formula for chlorophyll-a is: (a) C35 H72 O5N4 Mg (b) C65 H70 O6N4 Mg (c) C55 H72 O5N4 Mg (d) C45 H70 O6N4 Mg
Description : Role of CFC present in atmosphere is to a) Reduction in ozone b) Ozone formation c) Formation of leg haemoglobin a) Enhance chlorophyll formation.
Last Answer : a) Reduction in ozone
Description : Ringing experiment was first performed by: a. Godlewski b. Strasburger c. Hartig d. J.C.Bose
Last Answer : c. Hartig
Description : In the first stage of photosynthesis, light energy splits water molecules leaving a by-product which is released. This byproduct is: a) hydrogen b) carbon dioxide c) oxygen d) methane
Last Answer : ANSWER: C -- oxygen
Description : The autotrophic mode of nutrition requires (i) carbon dioxide and water (ii) chlorophyll (iii) sunlight (iv) all of the above -Biology
Last Answer : Autotrophic nutrition is the mode of nutrition in which green plants prepare their own food by the process of photosynthesis. It requires carbon dioxide, water, sunlight and chlorophyll. Hence, option (iv) is correct.
Description : The oxygen liberated during photosymthesis comes from - (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll
Last Answer : (1) Water Explanation: The oxygen produced during photosynthesis comes from water. The electrons excited by light in the chlorophyll molecule are replaced by electrons produced from the oxidation ... combines water and carbon dioxide into sugars, leaving oxygen gas as a waste product.
Description : The oxygen liberated during Photosynthes is comes from - (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll
Last Answer : (1) Water Explanation: The oxygen produced during photosynthesis comes from water. The electrons excited by light in the chlorophyll molecule are replaced by electrons produced from the oxidation of water into oxygen.
Description : Who demonstrate that photosynthesis is light dependent reaction in which hydrogen from a suitable oxidisable compound reduces carbon dioxide to carboh
Last Answer : Who demonstrate that photosynthesis is light dependent reaction in which hydrogen from a suitable ... comes from water nor from carbon dioxide.
Description : The first step for initiation of photosynthesis will be (a) photolysis of water (b) excitement of chlorophyll molecules due to absorption of light (c) ATP formation (d) glucose formation.
Last Answer : (b) excitement of chlorophyll molecules due to absorption of light
Description : Which of the following absorb light energy for photosynthesis? (a) Chlorophyll (b) Water molecule (c) O2 (d) RuBP
Last Answer : a) Chlorophyll
Description : In the first stage of photosynthesis, light energy is used to: a) move water molecules b) denature chlorophyll c) split water d) produce carbohydrates
Last Answer : ANSWER: C -- SPLIT WATER
Description : Fungi are plants that lack - (1) Oxygen (2) Carbon dioxide (3) Chlorophyll (4) None of these
Last Answer : (3) Chlorophyll Explanation: We know plants prepare their own food and so are known as autotrophs. With the help of photosynthesis they make food in which they produce glucose from carbon dioxide and sunlight.
Description : Pick out the wrong statement. (A) Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions (B) Inhalation of pollutant carbon monoxide results ... D) Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere
Last Answer : (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles
Description : The wavelength of light most absorbed by chlorophyll-a during photosynthesis is
Last Answer : The wavelength of light most absorbed by chlorophyll-a during photosynthesis is A. 460 nm B. 500 nm C. 600 nm D. 660 nm
Last Answer : The wavelength of light most absorbed by chlorophyll-a during photosynthesis is A. 400 nm B. 550 nm C. 660 nm D. 700 nm
Description : In photosynthesis energy from light reaction to dark reaction is transferred in the form of (a) ADP (b) ATP (c) RuDP (d) chlorophyll.
Last Answer : (b) ATP
Description : What is photosynthesis ?
Last Answer : The process by which green plants prepare sugary foods with carbon dioxide and water in the presence of sunlight is called photosynthesis.
Description : What do plants leave during photosynthesis ?
Last Answer : Plants release oxygen during photosynthesis.
Description : Which of the following works in photosynthesis of plants ?
Last Answer : Chlorophyll works in photosynthesis of plants.
Description : The shade of a tree is cooler than the shade of a roof due to: (a) Respiration (b) Photosynthesis (c) Transpiration (d) Guttation
Description : Criticize the following statement: Plants carry on photosynthesis; animals carry on respiration instead.
Last Answer : This is an incorrect view. Both plants and animals carry on respiration as a major source of energy for vital functions. Only plants, however, are also capable of carrying out photosynthesis. The ... will determine whether there is a net uptake of O2 or CO2 from a particular plant region.
Description : Potential energy is produced during a.Photorespiration b.Respiration c.Photosynthesis d.ATP synthesis
Last Answer : c.Photosynthesis
Description : Ozone hole causes a) Global warming b) Reduction in the rate of photosynthesis c) More UV rays come to earth d) All the above.
Last Answer : c) More UV rays come to earth
Description : Main function of biofertilizer is a) To increase chemical process b) To increase physiological process c) To increase biological process d) To increase photosynthesis process
Last Answer : c) To increase biological process
Description : Describe the essential organs of Malvaceae
Last Answer : Ans: Androecium: Stamens are many, epipetalous, monadelphous, anthers are reniform, monothcous, extrorse, dorsifixed, transverse dehiscence and pollen grains are large, spherical, spiny and polysiphonous. Gynoecium ... capitate and lobed. Lobes may be either equal or double the number of carpels.
Description : Minamata disease is due to pollutant a) Lead b) Mercury c) Hydrogen Sulphide d) Sulphur dioxide
Last Answer : b) Mercury
Description : Prove with the help of experiment that carbon dioxide is released during aerobic respiration?
Last Answer : i) Set up the apparatus as shown in fig (* see fig form book) ii) Pour concentrated soda lime (KOH) in U tube and set in the bottle with the help of glass tube in such a ... observe that limewater turned milky due to carbon dioxide. vii) This carbon dioxide is released by rat during respiration.
Description : Why is sweating called Necessary evil ?
Last Answer : Perspiration is an inevitable process in plant life. As a result of perspiration, a lot of water evaporates from the body of the plant. It can also cause plant death. Therefore, perspiration seems to ... process in the life of plants. This is why perspiration is called a Necessary evil for plants .
Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf
Description : Before, germination of pollen, the moisture necessary for pollen hydration is provided by
Last Answer : Before, germination of pollen, the moisture necessary for pollen hydration is provided by – Stigma
Description : During photosynthesis a plant uses energy from the sun to break apart glucose water and carbon dioxide. These molecules are used to make sugar to feed the plant and the plant then releases a by-product oxygen that humans breathe. this example shows that?
Last Answer : energy is not created but transferred to different forms (apex gang ;)
Description : Oxygen liberated during photosynthesis is coming from : (1) Carbon dioxide (2) Water (3) Bresk down of chlorophy II (4) Atmosphere
Last Answer : (2) Water Explanation: Oxygen liberated during photosynthesis is coming m6t.o create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin.
Description : Oxygen which is vital for life is a product of photosynthesis and comes from – (1) carbonates from soil (2) carbon dioxide (3) water (4) oxides of mineral elements
Last Answer : (3) water Explanation: The unusually high concentration of oxygen has on Earth is the result of the oxygen cycle. This biogeochemical cycle describes the movement of oxygen within and ... Photosynthesis releases oxygen into the atmosphere, while respiration and decay remove it from the atmosphere.
Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above ... Both processes can happen together because the diffusion coefficient of water and CO2 is different
Last Answer : (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different