Nitrogen in plant sample is estimated by:
a. Refreshrometer
b. Kjeldhal’s apparatus
c. Spectrophotometer
d. All of above

1 Answer

Answer :

Kjeldhal’s apparatus

Related questions

Description : Most of Nitrogen is used in the decomposition of __________ and thus plant shows deficiency symptoms : a. Amino acids b. Cellulose c. Carbon compounds d. Organic matter

Last Answer : Cellulose

Description : Reproductive phase of fruit plants is improved by the accumulation of _____: a. Nitrogen b. Starch c. Proteins d. Cellulose

Last Answer : Starch

Description : Proteins are most complex organic compounds, containing a. Carbon b. Hydrogen c. oxygen and nitrogen d. All of these

Last Answer : All of these

Description : At fruit bud differentiation, nitrogen contents are _____________: a. Low b. Medium` c. High d. Very high

Last Answer : Low

Description : Nitrogen in vegetables is needed for a. Vegetative growth b. Ripening /maturity c. Reproductive growth d. None of these

Last Answer : Vegetative growth

Description : Cracking in tomato fruit is due to: a. High nitrogen level b. Temperature fluctuations c. Soil moisture fluctuations a. All of these

Last Answer : All of these

Description : The porosity of a certain soil sample was found to be 80% and its specific gravity was 2:7; the critical hydraulic gradient will be estimated as (a) 0.34 (b) 0.92 (c) 1.0 (d) 1.5

Last Answer : (a) 0.34

Description : What part Of the spectrophotometer is responsible for detecting the amount of light absorbed?

Last Answer : Feel Free to Answer

Description : One indirect way to determine microbial growth is using a _____. a. UV light b. Spectrophotometer c. Light meter d. Radioactive counter

Last Answer : b. Spectrophotometer

Description : With respect to calibration of uv-vis spectrophotometer, which of the following material is used to evaluate the ‘control of absorbance’ A. Sodium thiosulphate B. Potassium dichromate C. Holmium oxide D. Potassium permanganate

Last Answer : B. Potassium dichromate

Description : Which instrument is used for photographing the Sun? (1) Galvanometer (2) Potentiometer (3) Spectrophotometer (4) Spectroheliograph

Last Answer : Spectroheliograph

Description : The growth of bacteria is measured by (1) hemacytometer (2) spectrophotometer (3) calorimeter (4) auxanometer

Last Answer : spectrophotometer

Description : In organic compounds, nitrogen is estimated by – (1) Carius method (2) Victor-Meyees method (3) Liebigs method (4) Dumas' method

Last Answer : (4) Dumas' method Explanation: In Dumas' method, a known quantity of nitrogen containing organic compound is heated strongly with excess of copper oxide in an atmosphere of carbon dioxide to produce free nitrogen in addition to carbon dioxide and water.

Description : In organic compounds, nitrogen is estimated by (1) Carius method (2) Victor-Meyer’s method (3) Liebig’s method (4) Dumas’ method

Last Answer :  Dumas’ method

Description : How deep should I plant my summer squash?

Last Answer : sadly, this post has nothing to do with baby clowns. this angers me.

Description : How deep should I plant my summer squash?

Last Answer : Are you planting from seed or starter plants?

Description : Which of the following is the proper recommendation for pruning trees at planting. a. Pruning should be limited to shaping the plant by removing dead or damaged limbs b. Trees should be cut back to at ... d. Trees should not be pruned at all - the latest trend is to let them develop naturally

Last Answer : Pruning should be limited to shaping the plant by removing dead or damaged limbs

Description : Mrs. Khan loves spring flowering bulbs. Which of the following would you suggest for Mrs. Khan to plant? a. Hyacinthus orientalis b. Coleus x hybridus c. Lonicera japonica d. Gardenia jasminoide

Last Answer : Hyacinthus orientalis

Description : Callus is a term usually referring to: a. The tissue on the collar of a limb b. The first tissue develops on a cut surface just before the root formation iniates. c. Deformed growth on plant limbs d. A disease of plant leaves and limbs

Last Answer : The first tissue develops on a cut surface just before the root formation iniates

Description : A plant that dies to the ground at the end of each growing season but comes back from the same root stubs year after year is most accurately described as: a. Perennial b. Annual c. Biennial d. Herbaceous perennial

Last Answer : Herbaceous perennial

Description : A shade loving border plant is: a. Marigold b. Impatiens c. Zinnia d. Chrysanthemum

Last Answer : Impatiens

Description : The basic underlying principle of using a mist propagation system is that it: a. Keeps the propagation medium uniformly moist and supplies moisture to the base of the cuttings b. ... medium to promote root formation and development d. Increases humidity around the cutting and reduces transpiration

Last Answer : Increases humidity around the cutting and reduces transpiration

Description : The loss of water in the form of vapor from the surface of plant leaves is referred to as: a. Transpiration b. Respiration c. Oxidation d. Condensation

Last Answer : Transpiration

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 : Plants usually do not grow well in poorly drained soils because: a. Oxygen content is low in poorly drained soils b. The organic matter content of poorly drained soils is too high c. Poorly drained soils warm too quickly in spring d. Plant roots become engorged with water in poorly drained soils

Last Answer : Oxygen content is low in poorly drained soils

Description : Pansy is very popular annual due to its: a. Stem and foliage beauty b. Hardiness toward ground cover c. Planting under shad. d. Mix colour flowers bedding plant.

Last Answer : Mix colour flowers bedding plant.

Description : A plant hardy in tropical zone will also be hardy in zone: a. Temperate b. Subtropical c. Arid d. Semi-arid

Last Answer : Subtropical

Description : In temperate climates, pruning should not be done near the end of the summer because: a. New growth will not harden before winter b. It may increase foliage disease c. Plants will not recover in time to produce new growth before winter d. Sever “bleeding” from the cuts will kill the plant

Last Answer : New growth will not harden before winter

Description : Which of the following is not a method for sterilizing plant growing medium? a. Steaming b. Baking c. Using chemical fumigants d. Keeping the growing medium moist for 6 to 7 days

Last Answer : Keeping the growing medium moist for 6 to 7 days

Description : Which of the plant is evergreen? a- Papulus nigra b- Bohinia verigata c- Euclyptus rostrata d- None of the above

Last Answer : None of the above

Description : The soil pH level primarily controls: a. Soil temperature b. Activity of soil-borne diseases c. Moisture absorption by roots d. Availability of essential plant nutrients

Last Answer : Availability of essential plant nutrients

Description : A climbing plant with woody stem is called a. Vine b. Liana c. Hedge d. All of the above

Last Answer : Vine

Description : Growing medium kept too wet will deprive the plant: a. Soluble salts b. Water c. Oxygen d. Fertilizer

Last Answer : Oxygen

Description : Commercial flower crops are sometimes watered to cause leaching. This means: a. Watering to spread fertilizer nutrients more evenly throughout the plant root system b. Watering to remove excess soluble salts from ... only to wet the top 1/3 of the growing medium d. Watering by subsurface methods

Last Answer : Watering to remove excess soluble salts from the growing medium

Description : A plant which is able to live under very dry conditions is called a. Xerophyte b. Hallophyte c. Mesophyte d. None of above

Last Answer : Xerophyte

Description : Study of plant species in relation to its environmental history is called: a. Phylogeny b. Histology c. Ontogeny d. None of these

Last Answer : Histology

Description : Rubber plant can be propagated through: a. Aerial layering b. Cutting c. All above d. None of above

Last Answer : All above

Description : Rubber plant (ornamental) belongs to family: a. Oleacecae b. Moraceae c. Rosaceae d. Nyctaginaceae

Last Answer : Moraceae

Description : The situation in which a plant grows wild is called a. Habitat b. Halophytes c. Helicoids d. Haustorium’s

Last Answer : Habitat

Description : One year old branch of plant is a. sprigs b. Mature branch c. twigs d. Non of these

Last Answer : twigs

Description : Fleshy fruit with thin skin, not formed from the ovary but from another part of the plant is known as: a. Berry b. Drupe c. Stone fruit d. Pome

Last Answer : Pome

Description : A good example of dioecious plant is a. Apricot b. Pear c. Plum d. Papaya

Last Answer : Papaya

Description : Pollination between two such flowers situated on the same plant is known a. Autogamy b. Allogamy c. Cross pollinated d. None of these

Last Answer : Allogamy

Description : Abscisic acid (ABA) is natural plant hormone, which: a. Promote the growth b. Initiate the ripening c. Induce the fruit maturity d. retards the growth

Last Answer : retards the growth

Description : Physiological aging activity in which plant tissues degenerate and ultimately die is called a. Senescence b. Ripening c. Climacteric d. Degeneration

Last Answer : Senescence

Description : Banana plant bears in it’s life time: a. Once in life b. Twice in life c. Multiple times d. All of above

Last Answer : Once in life

Description : Dormancy in plant and seed is mainly due to a. Environmental factor b. Physiological factor c. a & b d. None

Last Answer : a & b

Description : Rest is a natural process in a. Seed b. Seed & plant c. Plant d. Tropical plant

Last Answer : Seed & plant

Description : Excess of N in citrus plant may cause a. Leaf drop b. Lodging c. Flower drop d. Fruit drop

Last Answer : Flower drop

Description : The biggest fruit plant containing family is: a. Rosaceae b. Citrea c. Leguminoseae d. Vitaceae

Last Answer : Rosaceae