Fungi are plants that lack - (1) Oxygen (2) Carbon dioxide (3) Chlorophyll (4) None of these

Fungi are plants that lack - (1) Oxygen (2) Carbon dioxide (3) Chlorophyll (4) None of these
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(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.
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The oxygen liberated during Photosynthes is comes from - (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

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.

All the following characteristics apply to fungi except: a. There may be 1.5 million species. b. They lack chlorophyll. c. They include molds and yeasts. d. They are prokaryotic microorganisms.

Description : All the following characteristics apply to fungi except: a. There may be 1.5 million species. b. They lack chlorophyll. c. They include molds and yeasts. d. They are prokaryotic microorganisms.

Last Answer : d. They are prokaryotic microorganisms.

Chlorophyll a occurs in (a) all photosynthetic autotrophs (b) in all higher plants (c) all oxygen liberating autotrophs (d) all plants except fungi

Description : Chlorophyll a occurs in (a) all photosynthetic autotrophs (b) in all higher plants (c) all oxygen liberating autotrophs (d) all plants except fungi

Last Answer : (c) all oxygen liberating autotrophs

The oxygen liberated during photosymthesis comes from - (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

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.

The source of oxygen generated during photosynthesis is: (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

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.

The oxygen liberated during photosynthesis comes from (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Description : The oxygen liberated during photosynthesis comes from (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Last Answer : Water

The source of oxygen generated during photosynthesis is : (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

Description : The source of oxygen generated during photosynthesis is : (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

Last Answer : water

The open "Sigrees” or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the surroundings of sigrees (3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material

Description : The open "Sigrees or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the ... 3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material

Last Answer : (1) tendency of carbon dioxide to form a layer along with dust smoke Explanation: Burning coal requires oxygen to chemically react. The availability of oxygen is limited in the furnace by several factors ... dioxide from forming layer along with dust smoke so as to keep the supply of oxygen intact.

The open "Sigrees" or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the surroundings of sigrees (3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material

Description : The open "Sigrees" or coal stoves often require fanning to sustain burning because of (1) tendency of carbon dioxide to form a layer along with dust smoke (2) lack of oxygen in the ... 3) accumulation of smoke and dust over the sigrees (4) interrupted release of moisture from the material

Last Answer : tendency of carbon dioxide to form a layer along with dust smoke

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 in death by asphyxiation (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles (D) Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere

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

The autotrophic mode of nutrition requires (i) carbon dioxide and water (ii) chlorophyll (iii) sunlight (iv) all of the above -Biology

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.

Moll’s experiment explains that (a) Carbon dioxide is essential for photosynthesis (b) Chlorophyll and water are necessary for photosynthesis (c) Light and water are essential for photosynthesis (d) All of the above are correct

Description : Moll’s experiment explains that (a) Carbon dioxide is essential for photosynthesis (b) Chlorophyll and water are necessary for photosynthesis (c) Light and water are essential for photosynthesis (d) All of the above are correct

Last Answer : Ans. ((a))

Which of the following provides energy for photosynthesis? (1) Water (2) Sunlight (3) Chlorophyll (4) Carbon dioxide

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.

Which of the following provides energy for photosynthesis? (1) Water (2) Sunlight (3) Chlorophyll (4) Carbon dioxide

Description : Which of the following provides energy for photosynthesis? (1) Water (2) Sunlight (3) Chlorophyll (4) Carbon dioxide

Last Answer : Sunlight

Fungi depend on other organisms for: a) water b) food c) carbon dioxide d) hydrogen

Description : Fungi depend on other organisms for: a) water b) food c) carbon dioxide d) hydrogen

Last Answer : ANSWER: B -- FOOD

Green plants in the sea are useful for the respiration of fish because (a) They give out oxygen (b) They give out carbon dioxide (c) The give out oxygen and carbon dioxide simultaneously (d) They take oxygen and give out carbon dioxide

Description : Green plants in the sea are useful for the respiration of fish because (a) They give out oxygen (b) They give out carbon dioxide (c) The give out oxygen and carbon dioxide simultaneously (d) They take oxygen and give out carbon dioxide

Last Answer : Ans:(a)

During the day time plants (a) take in oxygen and give out carbon dioxide (b) take in carbon dioxide and give out oxygen (c) take in nitrogen and give out oxygen (d) take in carbon dioxide and give out nitrogen

Description : During the day time plants (a) take in oxygen and give out carbon dioxide (b) take in carbon dioxide and give out oxygen (c) take in nitrogen and give out oxygen (d) take in carbon dioxide and give out nitrogen

Last Answer : Ans:(b)

To carry out photosynthesis plants require – (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen

Description : To carry out photosynthesis plants require – (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen

Last Answer : (2) Carbon-dioxide Explanation: In photosynthesis, carbon dioxide is converted into sugars in a process called carbon fixation. Carbon fixation is a redox reaction, so photosynthesis needs to ... the electrons needed to convert carbon dioxide into a carbohydrate, which is a reduction reaction.

During photosynthesis in plants, the gas evolved is - (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Description : During photosynthesis in plants, the gas evolved is - (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Last Answer : (3) Oxygen 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 organism ... , through primary production, or indirectly, as the ultimate source of the energy in their food.

Which of the following gases do plants and trees give out during photosynthesis? A. Hydrogen B. Nitrogen C. Oxygen (Answer) D. Carbon dioxide

Description : Which of the following gases do plants and trees give out during photosynthesis? A. Hydrogen B. Nitrogen C. Oxygen (Answer) D. Carbon dioxide

Last Answer : C. Oxygen (Answer)

The most important element involved in the food preparation of plants is a. Nitrogen b. Oxygen c. Carbon dioxide d. Sulphur

Description : The most important element involved in the food preparation of plants is a. Nitrogen b. Oxygen c. Carbon dioxide d. Sulphur

Last Answer : c. Carbon dioxide

To carry out photosynthesis plants require (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen

Description : To carry out photosynthesis plants require (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen

Last Answer : Carbon-dioxide

During photosynthesis green plants absorb (1) nitrogen (2) carbon dioxide (3) carbon monoxide (4) oxygen

Description : During photosynthesis green plants absorb (1) nitrogen (2) carbon dioxide (3) carbon monoxide (4) oxygen

Last Answer : carbon dioxide

During photosynthesis in plants, the gas evolved is (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Description : During photosynthesis in plants, the gas evolved is (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Last Answer : Oxygen

Lack of Chlorophyll Disruption ?

Description : Lack of Chlorophyll Disruption ?

Last Answer : Lack of nitrogen interferes with chlorophyll production.

Bacteria do not need sunlight to grow because (a) They lack chlorophyll and so they are incapable of making their own food (b) They hate sunlight (c) They use other kinds of light for their food synthesis (d) They prepare their food without the help of sunlight

Description : Bacteria do not need sunlight to grow because (a) They lack chlorophyll and so they are incapable of making their own food (b) They hate sunlight (c) They use other kinds of light for their food synthesis (d) They prepare their food without the help of sunlight

Last Answer : Ans:(d)

Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Description : Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Last Answer : (3) there is a decrease in air pressure on the hills Explanation: Water boils at a lower temperature on top of a mountain because there is less air pressure on the molecules. Water boils when the ... at high elevations foods that are cooked by boiling take a little longer to cook at high elevation.

Bleaching powder is prepared by passing – (1) Chlorine over slaked lime (2) Oxygen over slaked lime (3) Carbon dioxide over slaked lime (4) Chlorine over quick lirne

Description : Bleaching powder is prepared by passing – (1) Chlorine over slaked lime (2) Oxygen over slaked lime (3) Carbon dioxide over slaked lime (4) Chlorine over quick lirne

Last Answer : (1) Chlorine over slaked lime Explanation: Calcium hypochlorite (bleaching powder) is manufactured by the calcium process: 2Cl2 + 2Ca(OH)2 (slaked lime) Ca(OCl)2 + CaCl2 + 2H2O. Bleaching powder is actually a mixture of calcium hypochlorite and the basic chloride with some slaked lime.

Which one out of the following helps in burning? (1) Oxygen (2) Carbon monoxide (3) Nitrogen (4) Carbon dioxide

Description : Which one out of the following helps in burning? (1) Oxygen (2) Carbon monoxide (3) Nitrogen (4) Carbon dioxide

Last Answer : (1) Oxygen Explanation: Karl Scheele, the Swedish chemist, was the first to prepare oxygen by heating mercuric oxide in 1772. Joseph Priestley, the English chemist, also prepared oxygen in 1774 ... on mercuric oxide. Its elemental nature was, however, established by the French chemist, Lavoisier.

In an acid base reaction which product is produced along with a salt? (1) Hydrogen gas (2) Oxygen gas (3) Carbon dioxide (4) Water

Description : In an acid base reaction which product is produced along with a salt? (1) Hydrogen gas (2) Oxygen gas (3) Carbon dioxide (4) Water

Last Answer : (4) Water Explanation: When an acid and a base are placed together, they read to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water.

Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth? (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Nitrogen

Description : Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth? (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Nitrogen

Last Answer : (1) Carbon dioxide Explanation: Carbon dioxide is a green house gas that absorbs heat radiated from the Sun as well as re-radiated heat from the Earth's surface.

The highest volume of gases in lower atmosphere is comprised of - (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen

Description : The highest volume of gases in lower atmosphere is comprised of - (1) Hydrogen (2) Carbon dioxide (3) Oxygen (4) Nitrogen

Last Answer : (4) Nitrogen Explanation: There are a number of atmospheric gases which make up air. In the lower atmosphere or troposphere, the main gases are nitrogen and oxygen, which make up 78% and 21% of the volume of air respectively. The remaining 1% of the atmospheric gases is made up of trace gases.

The bubbles in Chanmpagne and Soda are - (1) Nitrogen (2) Oxygen (3) Carbon dioxide (4) Hydrogen

Description : The bubbles in Chanmpagne and Soda are - (1) Nitrogen (2) Oxygen (3) Carbon dioxide (4) Hydrogen

Last Answer : (4) Hydrogen

The biogas used for cooking is a mixture of which of the following? (1) Carbon dioxide and oxygen (2) Isobutane and propane (3) Methane and Carbon monoxide (4) Methane and carbon dioxide

Description : The biogas used for cooking is a mixture of which of the following? (1) Carbon dioxide and oxygen (2) Isobutane and propane (3) Methane and Carbon monoxide (4) Methane and carbon dioxide

Last Answer : (4) Methane and carbon dioxide Explanation: Biogas is essentially a mixture of Methane (CH4, around 55-75%) but also contains Carbon Dioxide (CO3), around 25- 30%), varying quantities of Water ( ... ) and Carbon Monoxide (CO). Methane is the valuable component under the aspect of using biogas fuel.

Silver gets corroded due to ______ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen

Description : Silver gets corroded due to ______ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen

Last Answer : (2) Hydrogen Sulphide Explanation: Silver is a fairly stable metal and under normal circumstances does not corrode quickly. However, it is particularly susceptible to the effects of the sulfide ... atmosphere, especially in marine environment, and readily forms a surface tarnish of silver sulphide.

The name of unreactive gas is – (1) Carbon dioxide (2) Hydrogen (3) Nitrogen (4) Oxygen

Description : The name of unreactive gas is – (1) Carbon dioxide (2) Hydrogen (3) Nitrogen (4) Oxygen

Last Answer : (3) Nitrogen Explanation: Nitrogen is chemically unreactive because it has a strong triple bond which binds the two nitrogen atoms together making it harder for it to be broken. It does not burn, and at ordinary temperatures it does not react with other elements.

The gas that is used in the manufacture of vanaspati ghee is - (1) Oxygen (2) Carbon dioxide (3) Hydrogen (4) Nitrogen

Description : The gas that is used in the manufacture of vanaspati ghee is - (1) Oxygen (2) Carbon dioxide (3) Hydrogen (4) Nitrogen

Last Answer : (3) Hydrogen Explanation: Hydrogenation - to treat with hydrogen - is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. ... is for the processing of vegetableoils (fats to give margarine and related spreads and shortenings).

Electric bulbs are filled with – (1) Nitrogen (2) Carbon dioxide (3) Argon (4) Oxygen

Description : Electric bulbs are filled with – (1) Nitrogen (2) Carbon dioxide (3) Argon (4) Oxygen

Last Answer : (3) Argon Explanation: Argon is produced industrially by the fractional distillation of liquid air. Argon is mostly used as an inert shielding has in welding and other high-temperature industrial processes ... , and other types of gas discharge tubes. Argon makes a distinctive blue-green gas laser.

An example of major air pollutant is – (1) Oxygen (2) Carbon monoxide (3) Helium (4) Carbon dioxide

Description : An example of major air pollutant is – (1) Oxygen (2) Carbon monoxide (3) Helium (4) Carbon dioxide

Last Answer : (2) Carbon monoxide Explanation: Carbon monoxide (CO) is a colourless, odorless, non-irritating but very poisonous gas which is a product by incomplete combustion of fuel such as natural gas, coal or wood. Vehicular exhaust is a major source of carbon monoxide.

The major constituent of air is – (1) nitrogen (2) carbon dioxide (3) oxygen (4) hydrogen

Description : The major constituent of air is – (1) nitrogen (2) carbon dioxide (3) oxygen (4) hydrogen

Last Answer : (1) nitrogen Explanation: Depending on various geographical locationsthese may change, but for the most part air is made up of 78% nitrogen (N2), 21% oxygen (O2), and trace amounts of ... and mostly inert diatomic gas at standard conditions, constituting 78.09% by volume of Earth's atmosphere.

Which one out of the following helps in burning? (1) carbon dioxide (2) oxygen (3) carbon monoxide (4) nitrogen

Description : Which one out of the following helps in burning? (1) carbon dioxide (2) oxygen (3) carbon monoxide (4) nitrogen

Last Answer : (2) oxygen Explanation: Oxygen is the gas that helps / supports combustion (burning). Nitrogen itself does not support burning (though it forms nitrides with some metals). So, air also supports burning.

The gas which is mainly responsible for the green house effect is: (1) Ozone (2) Oxygen (3) Carbon dioxide (4) Carbon monoxide

Description : The gas which is mainly responsible for the green house effect is: (1) Ozone (2) Oxygen (3) Carbon dioxide (4) Carbon monoxide

Last Answer : (3) Carbon dioxide Explanation: A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental ... the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone.

Which is abundant in Gobar gas? (1) Carbon dioxide (2) Methane (3) Oxygen (4) Hydrogen

Description : Which is abundant in Gobar gas? (1) Carbon dioxide (2) Methane (3) Oxygen (4) Hydrogen

Last Answer : (2) Methane Explanation: Bio gas is a clean unpolluted and cheap source of energy in rural areas. It consists of 55-70% methane which is inflammable. Bio gas is produced from cattle dung in ... called digestion. It helps in reducing the deforestation as it arrests for cutting of trees for firewood.

Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide

Description : Which of the following gases is present under pressure in soft drinks? (1) Oxygen (2) Nitrogen (3) Carbon dioxide (4) Nitrous oxide

Last Answer : (3) Carbon dioxide Explanation: Carbon dioxide is present under pressure in soft drinks. Carbon dioxide adds that special sparkle and bite to the beverage and also acts as a mild preservative. Carbon ... for soft drinks because it is inert, non-toxic, and relatively inexpensive and easy to liquefy.

Ultraviolet radiation striking the earth is due to the depletion of – (1) carbon monoxide (2) carbon dioxide (3) ozone (4) oxygen

Description : Ultraviolet radiation striking the earth is due to the depletion of – (1) carbon monoxide (2) carbon dioxide (3) ozone (4) oxygen

Last Answer : (3) ozone Explanation: Ozone is a powerful oxidant (far more so than dioxygen) and has many industrial and consumer applications related to oxidation. This same high oxidizing potential, however, ... 100 parts per billion. This makes ozone a potent respiratory hazard and pollutant near ground level.

Where does the oxygen that keeps us alive come from? (1) Carbon dioxide (2) Carbonates absorbed from soil (3) Oxides of minerals (4) Water

Description : Where does the oxygen that keeps us alive come from? (1) Carbon dioxide (2) Carbonates absorbed from soil (3) Oxides of minerals (4) Water

Last Answer : (4) Water Explanation: Since water and carbon dioxide are both compounds which contain oxygen, it is possible to obtain oxygen from either. The oxygen produced from photosynthesis is not released into the ... the air. Scientists agree that there's oxygen from ocean plants in every breath we take.

Haemoglobin is used to transport _______ in humans. (1) Oxygen (2) Carbon Dioxide (3) Both are correct (4) Both are incorrect

Description : Haemoglobin is used to transport _______ in humans. (1) Oxygen (2) Carbon Dioxide (3) Both are correct (4) Both are incorrect

Last Answer : (1) Oxygen Explanation: In human beings, the respiratory pigment is hemoglobin which has a very high affinity for oxygen. This pigment is present in the red blood corpuscles.

When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Description : When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is - (1) Hydrogen (2) Oxygen (3) Carbon dioxide (4) All of them

Last Answer : (3) Carbon dioxide Explanation: When baking soda and lemon juice are added together, the reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) ... , more commonly known as baking soda). Carbon dioxide, a gas, is produced by the reaction.

Which gas is used to manufacture vanaspati from vegetable oil is - (1) carbon dioxide (2) nitrogen (3) oxygen (4) hydrogen

Description : Which gas is used to manufacture vanaspati from vegetable oil is - (1) carbon dioxide (2) nitrogen (3) oxygen (4) hydrogen

Last Answer : (4) hydrogen Explanation: Hydrogen is used to manufacture vanaspati from vegetable oil.

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

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.