CSS Agriculture Questions & Answers - Part-3 - Set 20

1)   When yeast and certain bacteria carry on anaerobic respiration they produce:

a. Carbon dioxide
b. Nitrogen
c. Water
d. Oxygen
Answer  Explanation 

ANSWER: Carbon dioxide

Explanation:
No explanation is available for this question!


2)   One of the following is a water-soluble pigment:

a. Carotene
b. Chlorophyll
c. Anthocyanin
d. Xanthophyll
Answer  Explanation 

ANSWER: Anthocyanin

Explanation:
No explanation is available for this question!


3)   Photosynthesis is:

a. Catabolic process
b. Anabolic process
c. Exothermic process
d. Exergonic process
Answer  Explanation 

ANSWER: Anabolic process

Explanation:
No explanation is available for this question!


4)   Gibberellins differ from auxins since they produce:

a. Cell division
b. Stem elongation
c. Root Initiation
d. Shortening of internodes
Answer  Explanation 

ANSWER: Stem elongation

Explanation:
No explanation is available for this question!


5)   Sialic acid is a constituent of:

a. Cell membrane
b. Cell wall
c. Chromosomes
d. Dictyosomes
Answer  Explanation 

ANSWER: Cell membrane

Explanation:
No explanation is available for this question!


6)   Which pair of structures is usually found in both plant and animal cell:

a. Cell membrane and nucleolus
b. Cell membrance and cell wall
c. Nucleus and chloroplast
d. Nucleolus and cell wall
Answer  Explanation 

ANSWER: Cell membrane and nucleolus

Explanation:
No explanation is available for this question!


7)   Plant cells do not burst in distilled water because:

a. Cell wall is permeable
b. Cell wall is living
c. Cell wall is elastic, rigid and get stretched
d. Cell wall is outer most layer of plant cell
Answer  Explanation 

ANSWER: Cell wall is elastic, rigid and get stretched

Explanation:
No explanation is available for this question!


8)   Transpiration is minimized by the deposition of:

a. Cellulose
b. Pectin
c. Cutin
d. Mucilage
Answer  Explanation 

ANSWER: Cutin

Explanation:
No explanation is available for this question!


9)   Unit membrane or (Plasma membrane) is made of:

a. Cellulose
b. Lipoproteins
c. Phosphorproteins
d. Phospholipids
Answer  Explanation 

ANSWER: Lipoproteins

Explanation:
No explanation is available for this question!


10)   Which of the following parts of a cell is non-living?

a. Centriole
b. Vacuole
c. Ribosome
d. Mitochondria
Answer  Explanation 

ANSWER: Vacuole

Explanation:
No explanation is available for this question!


11)   Which of the following structures controls the transport of the material into and out of living cell?

a. Centrosome
b. Cell membrane
c. Cell wall
d. Ribosome
Answer  Explanation 

ANSWER: Cell membrane

Explanation:
No explanation is available for this question!


12)   Atmospheric nitrogen in the soil is fixed by:

a. Cereals
b. Pulses
c. Sugarcane
d. Cotton
Answer  Explanation 

ANSWER: Pulses

Explanation:
No explanation is available for this question!


13)   The pH gradient across the cell membrane provides a powerful form of _____ potential energy largely responsible for driving phosphorylation:

a. Chermical
b. Physical
c. Electrical
d. Biological
Answer  Explanation 

ANSWER: Chermical

Explanation:
No explanation is available for this question!


14)   ______ is obviously useful to a plant as the excitaion by an insect of one or more sensory hairs of the venus's flytrap (Dionea muscipula):

a. Chemical potential
b. Action potential
c. Physical potential
d. Biological potential
Answer  Explanation 

ANSWER: Chemical potential

Explanation:
No explanation is available for this question!


15)   Both respiration and photosynthesis require:

a. Chlorophyll
b. Cytochromes
c. Sunlight
d. Glucose
Answer  Explanation 

ANSWER: Cytochromes

Explanation:
No explanation is available for this question!


16)   The role of molybdenum is:

a. Chromosome contraction
b. Carbon assimilation
c. Nitrogen fixation
d. Flowering induction
Answer  Explanation 

ANSWER: Nitrogen fixation

Explanation:
No explanation is available for this question!


17)   If a cell is placed in a solution and the cell shrinks, the solution is:

a. Clear
b. Isotonic
c. Hypotonic
d. Hypertonic
Answer  Explanation 

ANSWER: Hypertonic

Explanation:
No explanation is available for this question!


18)   What determines the diffusion of water accumulation of sugars?

a. CO2 accumulates, reduces pH, stimulates enzymes resulting in accumulation of sugars
b. Increase in CO2 concentration, conversion of organic acids into starch resulting in the increased uptake of potassium ions and water
c. Low CO2 concentration, accumulation of organic acids resulting in the increased concentration of cell sap
d. None of the above
Answer  Explanation 

ANSWER: None of the above

Explanation:
No explanation is available for this question!


19)   During aerobic respiration oxidation of glucose results in the formation of:

a. CO2 and water
b. Hydrogen and water
c. Hydrogen and oxygen
d. Oxygen and CO2
Answer  Explanation 

ANSWER: CO2 and water

Explanation:
No explanation is available for this question!


20)   If CO2 is given off in respirtion, why does the amount of CO2 in the atmosphere remain relatively constant?

a. CO2 forms carbonate rocks
b. CO2 is a buffer
c. CO2 is converted in photosynthesis to carbohydrates
d. CO2 is split up during photosynthesis
Answer  Explanation 

ANSWER: CO2 is converted in photosynthesis to carbohydrates

Explanation:
No explanation is available for this question!


21)   Non-essential element for the proper growth of plant is:

a. Cobalt
b. Magnesium
c. Chlorine
d. Calcium
Answer  Explanation 

ANSWER: Cobalt

Explanation:
No explanation is available for this question!


22)   Fermentation is:

a. Complete oxidation of carbohydrates
b. Incomplete oxidation of carbohydrate
c. Anaerobic respiration
d. None of the above
Answer  Explanation 

ANSWER: Incomplete oxidation of carbohydrate

Explanation:
No explanation is available for this question!


23)   Exogenous application of Gibberellins induces male flowers formation on genetically female plants in:

a. Cucumis
b. Cucurbita
c. Carica
d. Coccinia
Answer  Explanation 

ANSWER: Cucumis

Explanation:
No explanation is available for this question!


24)   Basic structure of all chlorophylls comprises:

a. Cytochrome system
b. Flavoproteins
c. Poryhyrin system
d. Plastocyanin
Answer  Explanation 

ANSWER: Poryhyrin system

Explanation:
No explanation is available for this question!


25)   Who proposed the concept of unit membrane for tripartite structure of lipoproteins?

a. Davson and Danielli
b. Robertson
c. Seifriz
d. Altmann
Answer  Explanation 

ANSWER: Robertson

Explanation:
No explanation is available for this question!


26)   Deficiency of iron causes:

a. Decrease in protein synthesis
b. Reduced leaves and stunted growth
c. Interveinal chlorosis first on young leaves
d. Bending of leaf tip
Answer  Explanation 

ANSWER: Interveinal chlorosis first on young leaves

Explanation:
No explanation is available for this question!


27)   The removal of apical buds and young leaves _____ branching:

a. Decreases
b. Increases
c. Maintains
d. No effect
Answer  Explanation 

ANSWER: Increases

Explanation:
No explanation is available for this question!


28)   If a few cells of an alga spirogyra are kept in a strong solution, the cell contents contract away from the cell wall, this is due to:

a. Dehydration
b. Plasmolysis
c. Hydrolysis
d. Contraction
Answer  Explanation 

ANSWER: Plasmolysis

Explanation:
No explanation is available for this question!


29)   Non-living substances of the protoplasm are collectively known as:

a. Deutoplasm
b. Plasmagel
c. Mesoplasm
d. Cytoplasm
Answer  Explanation 

ANSWER: Deutoplasm

Explanation:
No explanation is available for this question!


30)   D.P.D. stands for:

a. Diffusion pressure deficit
b. Diffusion pressure deficit
c. Daily phosphate demand
d. Daily photosynthetic depression
Answer  Explanation 

ANSWER: Diffusion pressure deficit

Explanation:
No explanation is available for this question!


31)   The real force causing entry of water into a cell from other cell is:

a. Diffusion pressure deficit
b. Turgor pressure
c. Osmotic pressure
d. Wall pressure
Answer  Explanation 

ANSWER: Diffusion pressure deficit

Explanation:
No explanation is available for this question!


32)   Turgidity of a cell is maintained by:

a. Diffusion pressure
b. Wall pressure
c. Osmotic pressure
d. Turgor pressure
Answer  Explanation 

ANSWER: Turgor pressure

Explanation:
No explanation is available for this question!


33)   Mineral salts, which are absorbed by the roots for the soil, are in the form of:

a. Dilute solution
b. Very concentrated solution
c. Concentrated solution
d. Very dilute solution
Answer  Explanation 

ANSWER: Concentrated solution

Explanation:
No explanation is available for this question!


34)   Aerobic respiration is more advantageous to a large organism than anaerobic respiration because aerobic respiration:

a. Does not require sunlight
b. Produce oxygen as a waste product
c. Does not require molecules oxygen and hydrogen
d. Releases more energy from an equal amount of nutrients
Answer  Explanation 

ANSWER: Releases more energy from an equal amount of nutrients

Explanation:
No explanation is available for this question!


35)   In a fully turgid cell the values (arbitrary values are shown) of DPD. OP and TP will show the tendency:

a. OPD 02 atm; OP 07 atm; TP 05 atm
b. DPD 00 atm; OP 15;TP 05 atm
c. DPD 10 atm; OP 15 atm;TP 05 atm
d. DPD 05 atm;OP 12 atm; TP 07 atm
Answer  Explanation 

ANSWER: DPD 00 atm; OP 15;TP 05 atm

Explanation:
No explanation is available for this question!


36)   Light harvesting complexes surrounded by both photosystems (I and II) and _____ light energy to them.

a. Draw
b. Accumulate
c. Transfer
d. None of these
Answer  Explanation 

ANSWER: Transfer

Explanation:
No explanation is available for this question!


37)   Functions and vital activities of the plants are studied under:

a. Ecology
b. Cytology
c. Physiology
d. Morphology
Answer  Explanation 

ANSWER: Physiology

Explanation:
No explanation is available for this question!


38)   Plasmagel is the name of:

a. Ectoplasm
b. Endoplasm
c. Protoplasm
d. None of these
Answer  Explanation 

ANSWER: Ectoplasm

Explanation:
No explanation is available for this question!


39)   The isolation of individual organelle from cell homogenates is achieved through:

a. Employment of different solvents
b. X-ray diffraction
c. Chromatography
d. Differential centrifugation
Answer  Explanation 

ANSWER: Chromatography

Explanation:
No explanation is available for this question!


40)   Excessive use of fertilizer causes death of plants due to:

a. Endosmosis
b. Exosmosis
c. Imbibitions
d. Turgidity
Answer  Explanation 

ANSWER: Exosmosis

Explanation:
No explanation is available for this question!


41)   Swilling of wooden door during rainy season is due to:

a. Endosmosis
b. Imbibitions
c. Capillary
d. Deplasmolysis
Answer  Explanation 

ANSWER: Imbibitions

Explanation:
No explanation is available for this question!


42)   In fermentation:

a. Energy is liberated
b. Energy is consumed
c. Energy is neither liberated nor consumed
d. Energy is stored
Answer  Explanation 

ANSWER: Energy is liberated

Explanation:
No explanation is available for this question!


43)   Ethylene especially in tomato plants has the following effects:

a. Enhances stem elongation
b. Reduces radial expansion
c. Retards formation of adventitious roots
d. Causes leaf senescence
Answer  Explanation 

ANSWER: Causes leaf senescence

Explanation:
No explanation is available for this question!


44)   The condition under which transpiration would be lowest

a. Environmental conditions are very dry
b. When there is high humidity in the atmosphere
c. High wind velocity
d. There is excess of water in the cells
Answer  Explanation 

ANSWER: When there is high humidity in the atmosphere

Explanation:
No explanation is available for this question!


45)   The nucleoplasm and the cytoplasm are continuous with one another through the nuclear pores in:

a. Eukaryotic cells
b. Prokaryotic cells
c. Cells of blue green algae
d. Bacteria
Answer  Explanation 

ANSWER: Eukaryotic cells

Explanation:
No explanation is available for this question!


46)   The conditions under which transpiration would be most rapid is:

a. Excess of water in soil
b. Low humidity, high temperature guard cells are turgid and moist soil
c. Low velocity of wind
d. High humidity
Answer  Explanation 

ANSWER: Low humidity, high temperature guard cells are turgid and moist soil

Explanation:
No explanation is available for this question!


47)   Nitrogen is essential component of:

a. Fat
b. Protein
c. Carbohydrates
d. Mg
Answer  Explanation 

ANSWER: Protein

Explanation:
No explanation is available for this question!


48)   Stomata are bound by a pair of guard cells and open guard cells are:

a. Flaccid
b. Large
c. Turgid
d. Green
Answer  Explanation 

ANSWER: Turgid

Explanation:
No explanation is available for this question!


49)   Osmosis means:

a. Flow of solute from low concentration to higher concentration
b. Flow of solute from high concentration to low concentration
c. Flow of solvent from low concentration to high concentration
d. Flow of solvent from high concentration to low concentration
Answer  Explanation 

ANSWER: Flow of solvent from low concentration to high concentration

Explanation:
No explanation is available for this question!


50)   When the dark period of shoft day plant is interrupted by a brief exposure of light then the plant:

a. Flowers immediately
b. Turns into a long day plant
c. Will not flower at all
d. Gives more flowers
Answer  Explanation 

ANSWER: Will not flower at all

Explanation:
No explanation is available for this question!