CSS Agriculture Questions & Answers - Part-3 - Set 21

1)   Out of the following, which one is the most common type of transpiration?

a. Foliar
b. Stomatal
c. Lenticular
d. Cuticular
Answer  Explanation 

ANSWER: Stomatal

Explanation:
No explanation is available for this question!


2)   The rate of transpiration will greatly depend upon:

a. Frequency of stomata
b. Position of stomata
c. State of stomata
d. None of the above
Answer  Explanation 

ANSWER: Position of stomata

Explanation:
No explanation is available for this question!


3)   Photochemical reactions of photosynthesis take place in:

a. Frets
b. Stroma
c. Thylakoids
d. All of these
Answer  Explanation 

ANSWER: Thylakoids

Explanation:
No explanation is available for this question!


4)   If fermentation is allowed to proceed in a closed vessel:

a. Gas pressure will develop because of excess of oxygen
b. Gas pressure will develop because of excess of carbon dioxide
c. Vacuum will be created
d. No change will take place
Answer  Explanation 

ANSWER: Gas pressure will develop because of excess of carbon dioxide

Explanation:
No explanation is available for this question!


5)   In submerged leaves respiration takes place through:

a. General surface of the leaf
b. Stomata present on dorsal surface of the leaf
c. Stomata present on ventral surface of leaf
d. Stomata present on both surfaces of the leaf
Answer  Explanation 

ANSWER: General surface of the leaf

Explanation:
No explanation is available for this question!


6)   Cytoklnins were first discovered in 1913 by Gottlieb Haberlandt in:

a. Germany
b. Holland
c. Poland
d. Austria
Answer  Explanation 

ANSWER: Austria

Explanation:
No explanation is available for this question!


7)   Which of the following is indispensable in cell culture?

a. Gibberellins
b. Kinetin
c. Ethylene
d. Auxin
Answer  Explanation 

ANSWER: Kinetin

Explanation:
No explanation is available for this question!


8)   Plants hormone, which is translocated to other parts for growth of the plant as:

a. Gibberellins
b. Cytokinin
c. Indole acetic acid
d. None of the above
Answer  Explanation 

ANSWER: Indole acetic acid

Explanation:
No explanation is available for this question!


9)   Which of the following is capable of delaying yellowing of leaves?

a. Gibberellins
b. Cytokinins
c. ABA
d. Auxins
Answer  Explanation 

ANSWER: Cytokinins

Explanation:
No explanation is available for this question!


10)   Which of the following is an essential part of photosynthesis?

a. Glycolysis
b. Photorespiration
c. Photorespiration
d. Photolysis
Answer  Explanation 

ANSWER: Photolysis

Explanation:
No explanation is available for this question!


11)   Hydroponics is:

a. Growing of plants in water culture
b. Growing of aquatic plants
c. Growing of floating aquatic plants
d. Soil less cultivation of plants
Answer  Explanation 

ANSWER: Growing of plants in water culture

Explanation:
No explanation is available for this question!


12)   The end product of fermentation is:

a. H2O and CO2
b. C2H5OH and CO2
c. CO2 is converted in photosynthesis to carbohydrates
d. Pyruvic acid and H2O
Answer  Explanation 

ANSWER: C2H5OH and CO2

Explanation:
No explanation is available for this question!


13)   Most plants obtain their nitrogen from the soil in the form of:

a. HNO3
b. Nitrate
c. Free nitrogen
d. Nitrogen oxide
Answer  Explanation 

ANSWER: Nitrate

Explanation:
No explanation is available for this question!


14)   The optically hyaline portion of the protoplasm is called as:

a. Hyaloplasm
b. Cytoplasm
c. Mesoplasm
d. Endoplasm
Answer  Explanation 

ANSWER: Hyaloplasm

Explanation:
No explanation is available for this question!


15)   Which of the following elements can land plants, normally obtain directly from the air?

a. Hydrogen
b. Phosphorus
c. Nitrogen
d. Carbon
Answer  Explanation 

ANSWER: Carbon

Explanation:
No explanation is available for this question!


16)   Which of the following is not naturally occurring plant hormone?

a. IAA
b. GA2
c. 2, 4-D
d. Gibberallins
Answer  Explanation 

ANSWER: 2, 4-D

Explanation:
No explanation is available for this question!


17)   One of the following causes rootings in cuttings:

a. IBA
b. 2, 4-D
c. GA3
d. ABA
Answer  Explanation 

ANSWER: IBA

Explanation:
No explanation is available for this question!


18)   When a seed is placed in a suitable medium for germination, by which of the following first process water enter into the seed coat?

a. Imbibition
b. Absorption
c. Osmosis
d. Root pressure
Answer  Explanation 

ANSWER: Imbibition

Explanation:
No explanation is available for this question!


19)   Plasma membrane is:

a. Impermeable
b. A selective barrier
c. A non-selective barrier
d. Made of up cellulose
Answer  Explanation 

ANSWER: A selective barrier

Explanation:
No explanation is available for this question!


20)   The efforts to enhance partition of assimilates to storage organs of interest to farmers have quite successful due to:

a. Improved component technology
b. Improved control of insect
c. Better disease control
d. Better breeding techniques
Answer  Explanation 

ANSWER: Better breeding techniques

Explanation:
No explanation is available for this question!


21)   Gibberellic acid has been successfully employed to induce flowering:

a. In long day points under short day conditions
b. In short day plants under long day conditions
c. For some plants
d. None of the above
Answer  Explanation 

ANSWER: In long day points under short day conditions

Explanation:
No explanation is available for this question!


22)   The prokaryota are a group of organisms:

a. In which cells are a group of organisms
b. In which nuclear membrance, nucleolus and chromosomal matrix are lacking
c. In which chlorophyll is lacking
d. With a wall defined nucleus
Answer  Explanation 

ANSWER: In which nuclear membrance, nucleolus and chromosomal matrix are lacking

Explanation:
No explanation is available for this question!


23)   Which one of the following will reduce the rate of transpiration?

a. Increase in windy velocity
b. Rise in temperature
c. Increase in water uptake by plants
d. Decrease in light intensity
Answer  Explanation 

ANSWER: Decrease in light intensity

Explanation:
No explanation is available for this question!


24)   The total volume of water on melting:

a. Increases
b. Remains constant
c. Decreases
d. None of these
Answer  Explanation 

ANSWER: Decreases

Explanation:
No explanation is available for this question!


25)   Gibberellins are now commercially used ______ into increase sugarcane growth and sugar yields:

a. Pakistan
b. Hawaii
c. Japan
d. Korea
Answer  Explanation 

ANSWER: Hawaii

Explanation:
No explanation is available for this question!


26)   It hypothetical chemical involved in the flowering of plant is:

a. Indole acetic acid
b. Florigen
c. Gibberellin
d. Kinetin
Answer  Explanation 

ANSWER: Florigen

Explanation:
No explanation is available for this question!


27)   Anaerobic respiration is also known as:

a. Intra-molecular respirtion
b. Inter-molecular respiration
c. Extra-molecular respiration
d. Molecular respirtion
Answer  Explanation 

ANSWER: Intra-molecular respirtion

Explanation:
No explanation is available for this question!


28)   Which of the following is not a part of chlorophyll?

a. Iron
b. Nitrogen
c. Carbon
d. Hydrogen
Answer  Explanation 

ANSWER: Iron

Explanation:
No explanation is available for this question!


29)   Wilting of leaves in hot weather is due to:

a. Iron and calcium
b. Sodium and copper
c. Calcium and potassium
d. Iron and magnesium Fe, Mg
Answer  Explanation 

ANSWER: Iron and calcium

Explanation:
No explanation is available for this question!


30)   A micro-essential element is one which:

a. Is less important than the major essential element
b. Is more important than the major essential element
c. Is present in small quantities in the soil
d. Is needed in very small amounts but is as important as a major essential element
Answer  Explanation 

ANSWER: Is needed in very small amounts but is as important as a major essential element

Explanation:
No explanation is available for this question!


31)   Rotation of crops is practised in plants because:

a. It decreases the nitrogen content of the soil
b. It increases the nitrogen content of the soil
c. It kills harmful bacteria of the soil
d. It increases the water content of the soil
Answer  Explanation 

ANSWER: It increases the nitrogen content of the soil

Explanation:
No explanation is available for this question!


32)   It is advantageous to the Hydrilla to demonstrate photosynthesis than land plant because:

a. It respires slowly
b. It does not transpire
c. It photosynthesizes rapidly
d. Oxygen bubbles can be collected over water
Answer  Explanation 

ANSWER: Oxygen bubbles can be collected over water

Explanation:
No explanation is available for this question!


33)   If you place a piece of tomato in concentrated solution:

a. It would become limp due to loss of water from its cells
b. It would become turgid due to absorption of water from salt solution
c. It would die
d. The plant is rapidly respiring
Answer  Explanation 

ANSWER: It would become limp due to loss of water from its cells

Explanation:
No explanation is available for this question!


34)   When a piece of potato tuber is placed in concentrated salt solution:

a. It would become turgid by absorbing water from salt solution
b. It would become limp (shrink) due to loss of water from its solution
c. It would die
d. Nothing would happen
Answer  Explanation 

ANSWER: It would become limp (shrink) due to loss of water from its solution

Explanation:
No explanation is available for this question!


35)   According to the fluid mosaic model the correct sequence of plasmalemma is:

a. L,-P,L,-P
b. L,-P-P,-L
c. P,-L,-L,P
d. P,-P,-L,-L
Answer  Explanation 

ANSWER: P,-L,-L,P

Explanation:
No explanation is available for this question!


36)   In the process of respiration in plants 180 gms. of sugar plus 192 gms. of oxygen produce:

a. Large amount of CO2, no water and no energy
b. 132 gm, of CO2, 54 gms, of water and 337 kilo cals of energy
c. 264 gms. of CO2, 108 gms. of water and 674 kilo cals. of energy
d. 528 gms. of CO2,216 gms. of water and 1348 kilo cals. of energy
Answer  Explanation 

ANSWER: 264 gms. of CO2, 108 gms. of water and 674 kilo cals. of energy

Explanation:
No explanation is available for this question!


37)   Leaves with yellow or colourless patches are termed as:

a. Lecorine
b. Decolourized
c. Etiolated
d. Variegated
Answer  Explanation 

ANSWER: Variegated

Explanation:
No explanation is available for this question!


38)   Oxygen evolved in photosynthesis is:

a. Less than CO2 consumed
b. More than CO2 consumed
c. Equal to CO2 consumed
d. None of these
Answer  Explanation 

ANSWER: Equal to CO2 consumed

Explanation:
No explanation is available for this question!


39)   The dry weight of a green leaf will be:

a. Lesser in evening
b. Greater in the afternoon
c. Greater in morning
d. Almost same throughout the whole day
Answer  Explanation 

ANSWER: Greater in the afternoon

Explanation:
No explanation is available for this question!


40)   Etiolated plants are formed due to lack of:

a. Light
b. Hg
c. Fe
d. Mg
Answer  Explanation 

ANSWER: Light

Explanation:
No explanation is available for this question!


41)   For photosynthesis (i.e. for the synthesis of organic matter) the green plants need only:

a. Light
b. Chlorophyll
c. CO2 and water
d. All of these
Answer  Explanation 

ANSWER: All of these

Explanation:
No explanation is available for this question!


42)   Growth is primarily affected by two climatic factors, which are:

a. Light and temperature
b. Temperature and relative humidity
c. Light and wind
d. Rainfall and temperature
Answer  Explanation 

ANSWER: Light and temperature

Explanation:
No explanation is available for this question!


43)   For the purpose of photosynthesis all except one of the following items are essential, point out the exception:

a. Light, chlorophyLL
b. Oxygen, sucrose
c. CO2, optimum temperature
d. Water, minerals
Answer  Explanation 

ANSWER: Oxygen, sucrose

Explanation:
No explanation is available for this question!


44)   One of the following is not found in intact cells:

a. Lomasomes
b. Dictyosomes
c. Microsomes
d. Ribosomes
Answer  Explanation 

ANSWER: Microsomes

Explanation:
No explanation is available for this question!


45)   A plant, which needs not less than 10 hours of light to flower, is:

a. Long day plant
b. Short day plant
c. Day neutral plant
d. None of these
Answer  Explanation 

ANSWER: Short day plant

Explanation:
No explanation is available for this question!


46)   If cells are broken up and sedimented by centrifugation the new structure formed in one of the fractions is:

a. Lysosome
b. Ribosome
c. Mecrosome
d. Centrosome
Answer  Explanation 

ANSWER: Mecrosome

Explanation:
No explanation is available for this question!


47)   Which of the following element is concerned with the photolysis of water?

a. Magnesium
b. Manganese
c. Calcium
d. Zinc
Answer  Explanation 

ANSWER: Manganese

Explanation:
No explanation is available for this question!


48)   Which one of the following elements is not required by plants for their normal healthy growth?

a. Magnesium
b. Lead
c. Iron
d. Calcium
Answer  Explanation 

ANSWER: Lead

Explanation:
No explanation is available for this question!


49)   The framework elements of plants are:

a. Magnesium, Copper and Iron
b. Copper, Carbon and Iron
c. Copper, Carbon and Oxygen
d. Manganese, Calcium and nitrogen
Answer  Explanation 

ANSWER: Copper, Carbon and Oxygen

Explanation:
No explanation is available for this question!


50)   Fertilizers have formula consisting of three figures such as 8-10-10. These figures stand for percentage of:

a. Magnesium, iron, potassium
b. Calcium, iron, born
c. Nitrogen, phosphorous, Potassium
d. Magnesium, manganese, sulphur
Answer  Explanation 

ANSWER: Nitrogen, phosphorous, Potassium

Explanation:
No explanation is available for this question!


51)   Anaerobic respiration was first of all reported by:

a. Maguenne
b. Kostychev
c. Klein
d. Pfeffer
Answer  Explanation 

ANSWER: Kostychev

Explanation:
No explanation is available for this question!


52)   The provision of light of shorter wavelength at the same time, as longer red wavelength photosynthesis.

a. Maintains
b. Enhances
c. Reduces
d. No efect
Answer  Explanation 

ANSWER: Enhances

Explanation:
No explanation is available for this question!


53)   Probably the most useful measurable property in the soil-plnt-air system is:

a. Matric poterntal
b. Water potential
c. Osmotic potential
d. Redox potential
Answer  Explanation 

ANSWER: Water potential

Explanation:
No explanation is available for this question!


54)   Every living cell has a:

a. Membrane
b. Food vacuole
c. Chloroplast
d. Cell wall
Answer  Explanation 

ANSWER: Membrane

Explanation:
No explanation is available for this question!


55)   Cytochrome oxidase contains:

a. Mg
b. Fe
c. Hg
d. Co
Answer  Explanation 

ANSWER: Fe

Explanation:
No explanation is available for this question!


56)   The figures of cork cells as seen by Robert Hooke were published in this book:

a. Micrographia
b. Origin of species
c. Plank kingdom
d. Genera plantarum
Answer  Explanation 

ANSWER: Micrographia

Explanation:
No explanation is available for this question!


57)   Proteins are synthesized on:

a. Mitochondria
b. Centrosome
c. Golgi bodies
d. Ribosomes
Answer  Explanation 

ANSWER: Ribosomes

Explanation:
No explanation is available for this question!