Plants adapted to low light intensity have
(a) larger photosynthetic unit size than the sun
plants
(b) higher rate of CO2 fixation than the sun plants
(c) more extended root system
(d) leaves modified to spines.

1 Answer

Answer :

(a) larger photosynthetic unit size than the sun
plants

Related questions

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 : The most important enzyme involved in photosynthetic CO2 fixation in C4 plants

Last Answer : Ans. PEP carboxylase

Description : The most important enzyme involved in photosynthetic CO2 fixation in C3 plants

Last Answer : Ans. Rubisco

Description : With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct? (a) Increasing atmospheric CO2 concentration up to 0.05% can enhance CO2 fixation rate. ( ... for higher yield. (d) Light saturation for CO2 fixation occurs at 10% of full sunlight.

Last Answer : (b) C3 plants respond to higher temperature with enhanced photosynthesis while C4 plants have much lower temperature optimum

Description : Why are the leaves of cactus plants modified into spines? -Biology

Last Answer : The leaves of cactus are modified into spines, to prevent water loss from the surface of leaves. ... Thus, the stem is the centre of photosynthesis in the cactus plants instead of the leaves.

Description : Plants adapted to low light intensity have

Last Answer : Plants adapted to low light intensity have A. Leaves modified to spines B. Large photosynthetic unit ... the sun plants D. More extended root system

Description : True statements about visual adaptation include: a. light adaptation takes longer than dark adaptation b. dark adaptation reaches its maximum in about 20 minutes c. in dark adapted eye, a higher intensity ... wear red goggles in the light adapt quicker in the dark than those who do not wear them

Last Answer : in dark adapted eye, a higher intensity of light is required to stimulate cones than rods

Description : In cactus, the spines are the modified – (1) stern (2) stipulse (3) leaves (4) buds

Last Answer : (3) leaves Explanation: Most cactus morphologists have concluded that cactus spines are modified leaves. They are wholly transformed leaves that protect the plant from herbivores, radiate heat from the stem during the day, and collect and drip condensed water vapour during the cooler night.

Description : Leaves become modified into spines in (a) onion (b) silk cotton (c) Opuntia (d) pea.

Last Answer : (c) Opuntia

Description : In cactus, the spines are the modified (1) stem (2) stipulse (3) leaves (4) buds

Last Answer : leaves

Description : Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because (a) effective pumping of CO2 into bundle sheath cells (b) RuBisCO in C4 plants has higher affinity for CO2 (c ... d) the primary fixation of CO2 is mediated via PEP carboxylase. (2005) 65. In sugarcane plant

Last Answer : (d) the primary fixation of CO2 is mediated via PEP carboxylase.

Description : Stipules are modified into spines in

Last Answer : Stipules are modified into spines in A. Shoe Flower B. Cotton C. Zizyphus D. Dalbergia

Description : In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of (a) bundle sheath (b) phloem (c) epidermis (d) mesophyll.

Last Answer : (d) mesophyll.

Description : In leaves of C4 plants, malic acid synthesis during CO2 fixation occurs in (a) bundle sheath (b) guard cells (c) epidermal cells (d) mesophyll cells

Last Answer : (d) mesophyll cells.

Description : With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct ? (1) Increasing atmospheric CO 2 concentration up to 0.05% can enhance CO 2 fixation ... for higher yield (4) Light saturation for CO 2 fixation occurs at 10% of full sunlight

Last Answer : (2) C 3 plants respond to higher temperatures with enhanced photosynthesis while C 4 plants have much lower temperature optimum

Description : Which of the following is correct about the photorespiration? a. Photorespiration is more efficient in synthesizing glucose than photosynthesis. b. C3 plants are best adapted to handle c. ... During photorespiration plants use oxygen to break down carbohydrates and release e. All of these

Last Answer : c. Photorespiration is likely to occur when oxygen level is high and CO2 level is

Description : The bright-flash ERG: a. comes only from the cones b. is generated in a fully dark adapted eye by the highest intensity of light c. can be used to assess the overall retinal integrity in the presence of media opacity d. is abnormal in patients with age-related macular degeneration

Last Answer : can be used to assess the overall retinal integrity in the presence of media opacity

Description : How does the spines on an octopus tree help the plant's leaves keep the water they need

Last Answer : Need Answer

Description : In C4 plants, CO2 fixation is done by (a) sclerenchyma (b) chlorenchyma and hypodermis (c) mesophyll cells (d) guard cells.

Last Answer : (c) mesophyll cells

Description : The primary acceptor, during CO2 fixation in C3 plants, is (a) phosphoenolpyruvate (PEP) (b) ribulose 1, 5-diphosphate (RuDP) (c) phosphoglyceric acid (PGA) (d) ribulose monophosphate (RMP).

Last Answer : (b) ribulose 1, 5-diphosphate (RuDP)

Description : (A)______plants have a higher temperature optimum than the plants adapted to (B)_____ climates.

Last Answer : (A)______plants have a higher temperature optimum than the plants adapted to (B)_____ climates.

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

Description : Which of the following processes doesn't account for an increase in atmospheric CO2 (carbon dioxide) levels? w) deforestation x) photosynthetic processes y) plant respiration z) fossil fuel combustion

Last Answer : ANSWER: X -- PHOTOSYNTHETIC PROCESSES

Description : C4 plants are more efficient in photosynthesis than C3 plants due to (a) higher leaf area (b) presence of larger number of chloroplasts in the leaf cells (c) presence of thin cuticle (d) lower rate of photorespiration

Last Answer : d) lower rate of photorespiration.

Description : The photosynthetic rate of C4 is …….. than C3 plants

Last Answer : Ans. Low

Description : The following methods can be used to test solely the rod ERG: a. a rapidly flickering light b. red light stimulus c. low-density blue light in dark adapted eye d. focal ERG

Last Answer : low-density blue light in dark adapted eye

Description : The CO2 fixation during C4 pathway occurs in the chloroplast of (a) guard cells (b) bundle sheath cells (c) mesophyll cells (d) spongy parenchyma.

Last Answer : (c) mesophyll cells

Description : Study the pathway given below. Atmospheric CO2 mesophyll cell Bundle sheath cell Plasma- desmata Plasma membrane Cell wall HCO Phosphoenol- 3 - pyruvate Cell wall C acid ... b) Fixation Transamination Regeneration (c) Fixation Decarboxylation Regeneration (d) Carboxylation Decarboxylation Reduction

Last Answer : (c) Fixation Decarboxylation Regeneration

Description : PGA as the first CO2 fixation product was discovered in photosynthesis of (a) bryophyte (b) gymnosperm (c) angiosperm (d) alga.

Last Answer : (d) alga.

Description : $ Photosynthesis roots are a type of Tap Root System. ! Anoxygenic photosynthesi is performed by photosynthetic roots.

Last Answer : $ Photosynthesis roots are a type of Tap Root System. ! Anoxygenic photosynthesi is performed by photosynthetic ... D. If both As and R are wrong.

Description : Which of the following are responsible for the formation of photochemical smog ? 1. Light intensity 2. Ratio of hydrocarbons to nitric oxide 3. CO2 4. Hydrocarbon reactivity 5. SO2 (a) 1, 2, 3, 4 and 5 (b) 1, 2 and 4 only (c) 2, 3 and 4 only (d) 2, 3 and 5 only

Last Answer : (b) 1, 2 and 4 only

Description : Solvay process as compared to dual process (i.e. modified Solvay process). (A) Can use low grade brine (B) Has less corrosion problems (C) Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Description : The edible part of an onion is - (1) Modified root (2) Aerial flower (3) Aerial stem (4) Fleshy leaves

Last Answer : (4) Fleshy leaves Explanation: Edible plant stems are one part of plants that are eaten by humans. Most plants are made up of roots, stems, leaves, flowers, buds and produce fruits containing ... which theprimary storage tissue is expanded leaf bases. They come in white, yellow, and red varieties.

Description : The edible part of an onion is (1) Modified root (2) Aerial flower (3) Aerial stem (4) Fleshy leaves

Last Answer : Fleshy leaves

Description : Why santa Rosa experienced a lower modified Mercalli intensity shaking than Salinas experienced during the 1989 earthquake?

Last Answer : Feel Free to Answer

Description : The following are true about the sensitivity of the visual system: a. in the dark the peak sensitivity of the eye is around 500nm b. in the light the peak sensitivity of the eye is around 555nm c ... Hz and above d. a dark-adapted eye is more sensitive to blue-green light than a light-adapted ey

Last Answer : a dark-adapted eye is more sensitive to blue-green light than a light-adapted ey

Description : What is the name of instrument used for measuring earthquake intensity? a. Modified Mercalli Scale b. Metrological scale c. Vernier scale d. Barometer

Last Answer : a. Modified Mercalli Scale

Description : In the leaves of `C_(4)` plants, malic acid formation during `CO_(2)` fixation occurs in the cells of

Last Answer : In the leaves of `C_(4)` plants, malic acid formation during `CO_(2)` fixation occurs in the ... A. Epidermis B. Mesophyll C. Bundle sheath D. Phloem

Description : Which of the listed procedures should be carried out to prevent moisture damage to electrical apparatus during extended periods of idleness? A. Fill the motor housing with CO2 to inert the space. B. Strap ... C. Place heat lamps in the motor housings. D. Cover the equipment with a canvas tarpaulin.

Last Answer : Answer: C

Description : While stranded in the desert, you come across two creatures offering water. Only, one has no nose, and one has spines. They say that one has poison, and the other will keep you going for a few more hours. Which one can't you trust? -Riddles

Last Answer : The one with no nose, for it’s a snake that bears poison. The other is a cactus, which has water in it.

Description : Pick out the wrong statement. (A) Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient (B) In a shell and tube heat exchanger ... surface heat exchangers, when the direction of fluid flow is parallel to the axis of the tube

Last Answer : (C) S.I. unit of fouling factor is Watt/m2 .°K

Description : Voralloid root' of Gyms helps in (1) Absorption of water (2) Absorption of water and fixation of Nitrogen (3) Anchorage (4) Transport of food

Last Answer : (2) Absorption of water and fixation of Nitrogen Explanation: Branch roots are of two kinds: long-branching geotropic roots and shortbranching apogeotropic roots, which are referred to as coralloid ... algae), which fix nitrogen. It also collects water and soil nutrients and store carbohydrates.

Description : Nitrogen fixation in root nodules of Alnus is brought about by (a) Frankia (b) Azorhizobium (c) Bradyrhizobium (d) Clostridium

Last Answer : (a) Frankia

Description : Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) ... fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification

Last Answer : (d) Anaerobic ammonium oxidation and denitrification

Description : ______ helps in fixation of nitrogen in rice field in association with root of Cycas plant. a) rhizobium b)fungus c)cyano bacteria d)bacteria

Last Answer : c)cyano bacteria

Description : ‘Coralloid root’ of Cycas helps in (1) Absorption of water (2) Absorption of water and fixation of Nitrogen (3) Anchorage (4) Transport of food

Last Answer : Absorption of water and fixation of Nitrogen

Description : The photosynthetic unit is

Last Answer : The photosynthetic unit is A. Glyoxysome B. Spherosome C. Microsome D. Quantasome

Description : The sorting out of molecules according to size and shape may be adapted to protein purification in this technique: (A) Adsorption chromatography (B) Gel filtration chromatography (C) Paper chromatography (D) None of these

Last Answer : Answer : B

Description : Root formation is promoted in softwood cuttings under light intensity of __________ foot candles: a. 100-150 b. 150-200 c. 200-250 d. 250-350

Last Answer : 150-200

Description : In comparing management fraud with employee fraud, the auditor's risk of failing to discover the fraud is a. Greater for employee fraud because of the larger number of employees in ... existing internal controls. d. Greater for management fraud because managers are inherently smarter than employees.

Last Answer : Greater for management fraud because of management's ability to override existing internal controls