Plants are dried up in winter due to frost because – (1) Evaporation does not take place (2) Photosynthesis does not take place at such low temperature (3) Respiration does not take place at low temperature (4) There is mechanical loss of tissues and drought condition prevails

1 Answer

Answer :

(4) There is mechanical loss of tissues and drought condition prevails Explanation: Respiration does not rely on the sun, so it is possible for plants to respire around the clock. The rate of respiration is dependent on temperature: The warmer it is, the more a plant will respire. Drought, extreme winter or frost and heat injury all create a situation for the plant where moisture is not adequate to maintain the proper water levels in plant tissues. Extreme winter cold and frost are similar to summer drought in that frozen water is unavailable to the plant. The air is very dry as well.

Related questions

Description : Plants are dried up in winter due to frost because (1) Evaporation does not take place (2) Photosynthesis does not take place at such low temperature (3) Respiration does not take place at low temperature (4) There is mechanical loss of tissues and drought condition prevails

Last Answer : There is mechanical loss of tissues and drought condition prevails

Description : Plants are killed in winter by frost because (a) No photosynthesis occurs at low temperature (b) Of desiccation (c) Water in the plants freezes (d) Water in the plants evaporates

Last Answer : Ans:(b)

Description : The balance of CO2 and O2 in atmosphere is due to _____. (1) Transportation (2) Photosynthesis (3) Respiration (4) Evaporation

Last Answer : (2) Photosynthesis Explanation: Photosynthesis takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere.

Description : Maximum loss of water from the plants occurs due to a. Transpiration b. Evaporation c. Guttation d. Respiration

Last Answer : a. Transpiration

Description : Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ °C, because corrosion prevails at higher temperatures. (A) 350 (B) 750 (C) 1050 (D) 1250

Last Answer : (B) 750

Description : Which of the following is the best statement of the relationship of intelligence to delinquency? Options: A) Dull children are most likely to be apprehended and appear to be more often delinquent B) ... ad the imbeciles D) Delinquency is not a product of intelligence as much as of other factors

Last Answer : B) Dull children appear more frequently delinquent because they tend to come from slum areas where strict law enforcement prevails

Description : Water pipes in hilly areas often burst on a cold frosty night, because – (1) The material of which pipes are made contracts due to cold and so breaks (2) Water in the pipes freezes and on freezing water expands, so pipes break (3) Frost makes the pipes rusty, so they break (4) None of these

Last Answer : (2) Water in the pipes freezes and on freezing water expands, so pipes break Explanation: The temperature may fall below 0° C during cold frosty nights which converts the water inside the pipes into ice, ... in an increase in volume. This exerts great force on the pipes and as a result, they burst.

Description : Water pipes in hilly areas often burst on a cold frosty night, because (1) the material of which pipes are made contracts due to cold and so breaks (2) water in the pipes freezes and on freezing water expands, so pipes break (3) frost makes the pipes rusty, so they break (4) None of these

Last Answer : water in the pipes freezes and on freezing water expands, so pipes break

Description : Plants are killed in winter by frost?

Last Answer : because of desiccation and mechanical damage to the tissues

Description : Which of the following is the most important for animals and plants being driven to extinction? (a) Alien species invasion (b) Habitat loss and fragmentation (c) Drought and floods (d) Economic exploitation

Last Answer : (b) Habitat loss and fragmentation

Description : In which of the following processes is energy released? (1) Respiration (2) Photosynthesis (3) Ingestion (4) Absorption

Last Answer : (1) Respiration Explanation: Cellular respiration is the set of the metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into ... molecules into smaller ones, releasing energy in the process as they break high-energy bonds.

Description : In which of the following processes is energy released ? (1) Respiration (2) Photosynthesis (3) Ingestion (4) Absorption

Last Answer : Respiration

Description : During the S. CA drought this winter should I be watering potted Plumerias?

Last Answer : Need Answer

Description : Out of photosynthesis and respiration in plants, which process occurs : (a) all the time ? -Science

Last Answer : Respiration. (b) Photosynthesis.

Description : What happens if the rate of respiration exceed the rate of photosynthesis in plants -Biology

Last Answer : answer:

Description : What happens if the rate of respiration exceed the rate of photosynthesis in plants -Biology

Last Answer : answer:

Description : Which of the following processes are associated with plants during dark period? (1) Photosynthesis and respiration (2) Respiration and transpiration (3) Transpiration and conduction (4) Conduction and respiration

Last Answer : (4) Conduction and respiration Explanation: Conduction is the process by which vital nutrients are transported to the different parts of a plant. This process is independent of the light factor ... the photosynthesis process cannot be happening without sun, so it exhales the carbon-dioxide itself.

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 : In plants, __________ is the process of converting stored energy into energy for plant growth. a. Transpiration b. Photosynthesis c. Respiration d. Pollination

Last Answer : Respiration

Description : Phenyl mercuric acetate (PMA) results in (a) reduced photosynthesis (b) reduced transpiration (c) reduced respiration (d) killing of plants.

Last Answer : (b) reduced transpiration

Description : Plants release energy during (1) Photosynthesis (2) Respiration (3) Transpiration (4) Germination

Last Answer : Respiration

Description : Which of the following processes are associated with plants during dark period? (1) Photosynthesis and respiration (2) Respiration and transpiration (3) Transpiration and conduction (4) Conduction and respiration

Last Answer : Conduction and respiration

Description : The shade of a tree is cooler than the shade of a roof due to: (a) Respiration (b) Photosynthesis (c) Transpiration (d) Guttation

Last Answer : Ans. ((c))

Description : The source of oxygen in atmosphere is due to – (1) Photosynthesis (2) Excretion (3) Nitrogen fixation (4) Respiration

Last Answer : (1) Photosynthesis Explanation: The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water. The organ-isms that carry out photosynthesis include ... well as the phytoplankton of the oceans. 6CO2 + 6H2O + energy -> C6H12O6 + 6O2

Description : The source of oxygen in atmosphere is due to (1) Photosynthesis (2) Excretion (3) Nitrogen fixation (4) Respiration

Last Answer : Photosynthesis

Description : The best suited variety for drought condition

Last Answer : Ans. Arka Vikas

Description : The chemical accumulated during drought condition

Last Answer : Ans.Proline

Description : Select the false statement a. HB4 is first bajra hybrid b. Bajra is self pollinated c. In banjara protogynous condition observed d. Bajra is drought tolerant

Last Answer : b. Bajra is self pollinated

Description : Under drought condition — nutrient deficiency is observed in Cotton. a. N b. Mg c. B d. P

Last Answer : b. Mg

Description : Pipelines in cold countries often burst in winter, because – (1) Water freezes and expands in its volume (2) Temperature of ice is less than that of water (3) Pipelines contract in their volume (4) Pipelines expand due to freezing

Last Answer : (1) Water freezes and expands in its volume Explanation: Water expands on freezing. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees ... it expands by approximately 9%. The fact that water expands upon freezing causes icebergs to float.

Description : Pipelines in cold countries often burst in winter, because (1) water freezes and expands in its volume (2) temperature of ice is less than that of water (3) pipelines contract in their volume (4) pipelines expand due to freezing

Last Answer : water freezes and expands in its volume

Description : Proportional representation is NOT necessary in a country where? (1) There are no reserved constituencies. (2) A two-party system has developed (3) The first past-post system prevails (4) There is a fusion of presidential and parliamentary form of government.

Last Answer : (2) A two-party system has developed Explanation: In proportional representation, a candidate requires 50% + 1 vote to get elected. In a bieparty system, one automatically secures it. Proportional ... seats won by a party or group of candidates is proportionate to the number of votes received.

Description : Same price prevails throughout the market under - (1) perfect competition (2) monopoly (3) monopolistic competition (4) oligopoly

Last Answer : (1) perfect competition Explanation: Under perfect competition, the control over price is completely eliminated because all firms produce homogeneous commodities. This condition ensures that the same price prevails in the market for the same commodity.

Description : Same price prevails throughout the market under (1) perfect competition (2) monopoly (3) monopolistic competition (4) oligopoly

Last Answer : perfect competition

Description : Massive starvation takes place due to: (a) rise in the price of essential commodities (b) decline in production of foodgrains (c) drought (d) both (a) and (b)

Last Answer : (c) drought

Description : Formation of frost on evaporator in refrigerator (a) results in loss of heat due to poor heat transfer (b) increases heat transfer rate (c) decreases compressor power. (d) can be avoided by proper design

Last Answer : Ans: a

Description : At a temperature above 35ºC (a) rate of photosynthesis will decline earlier than that of respiration (b) rate of respiration will decline earlier than that of photosynthesis (c) there is no fixed pattern (d) both decline simultaneously.

Last Answer : (a) rate of photosynthesis will decline earlier than that of respiration

Description : Which of the following terms refers to enlarged, red, and tender lymph nodes? a) Lymphadenitis Acute lymphadenitis is demonstrated by enlarged, red and tender lymph nodes. b) Lymphangitis ... refers to a condition in which chronic swelling of the extremity recedes only slightly with elevation.

Last Answer : a) Lymphadenitis Acute lymphadenitis is demonstrated by enlarged, red and tender lymph nodes.

Description : Piping in a soil mass is a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit* b) Caused due to very low exit gradient c) ... connected pores d) Due to loss of the strength of cohesion less soil because of upward flow of of water

Last Answer : a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit*

Description : The removal of paint from electrical equipment, such as generators, should be cautiously undertaken because ____________. A. the mechanical shock of paint removal lessens the dielectric strength ... phase windings frequently become isolated from each other due to dust interference at the terminals

Last Answer : Answer: B

Description : The advantage of dry compression is that (a) it permits higher speeds to be used (b) it permits complete evaporation in the evaporator (c) it results in high volumetirc and mechanical efficiency (d) all of the above

Last Answer : Ans: d

Description : Mechanical recompression evaporation is used in the production of (A) Alcohol (B) Distilled water (C) Salt (D) Fruits jam

Last Answer : (B) Distilled water

Description : A single fixed pulley is used to draw water from a well because – (1) efficiency is 100% (2) velocity ratio is low (3) mechanical advantage is high (4) force is applied in a convenient direction

Last Answer : (4) force is applied in a convenient direction Explanation: A single fixed pulley is used to lift a load upwards by applying efforts downward's. The load and effort move equal distance but in opposite ... apply effort in downward direction. They are used on flag-poles and to draw water from a well.

Description : A single fixed pulley is used to draw water from a well because (1) efficiency is 100% (2) velocity ratio is low (3) mechanical advantage is high (4) force is applied in a convenient direction

Last Answer : force is applied in a convenient direction

Description : The loss of water by plants in the form of vapor i called: a) evaporation b) transpiration c) evapotranspiration d) vaporization

Last Answer : ANSWER: C -- evapotranspiration

Description : In summer, man with excess perspiration feels weak, because of the (a) Loss of more water through evaporation (b) Loss of salts through evaporation (c) Loss of carbohydrates through evaporation (d) All factors mentioned above

Last Answer : Ans:(d)

Description : What form does carbon take after photosynthesis What form does carbon take after cellular respiration?

Last Answer : Need answer

Description : Chromatophores take part in (a) movement (b) respiration (c) photosynthesis (d) growth.

Last Answer : (c) photosynthesis

Description : Growth of early emerging leaves becomes faster because of- (a) Cell division and cell enlargement (b) Stunt growth of plants (c) Faster Photosynthesis (d) Low pressure of outer atmosphere

Last Answer : (b) 15°C – 40°C