- Starch sugar hypothesis to open stomata rejected due to ___.
a. According to this theory, stomata open very slowly
b. Sugar has no impact
c. Not present in this phenomenon in all
d. All - The walls of xylem vessels are _.
a. Hydrophobic
b. Hydrophilic
c. In few instances hydrophilic
d. In few instances hydrophobic - Chlorosis is caused due to deficiency of __.
a. Magnesium
b. Nitrogen
c. Both
d. None - Excessive nitrogen results in _____.
a. Chlorosis
b. Reduced foliage
c. High shoot-to-root ratio
d. All - Which one directly influence the opening and closing of stomata?
a. Potassium
b. Magnesium
c. Calcium
d. Nitrogen - How many nuclei are present in the mature sieve tube cells?
a. One
b. Two
c. Many
d. No - 1 mole of the enzyme converted number of moles substrate into products per minutes is called?
a. Reaction kinetics
b. Reaction rate
c. Turnover number of enzymes
d. Substrate optimization - Which one factor does not denature enzyme?
a. pH
b. temperature
c. inhibitors
d. All - Non-hydrolytic addition or removal of a group?
a. Ligase
b. Isomerase
c. Oxidase
d. Lyases - Maximum absorption of light by chlorophylls shows peaks at wavelength
a. Green
b. yellow
c. indigo
d. None - The enzyme involves the reduction of 3-phosphoglycerate during C-3 Cycles are present in the _.
a. Cytoplasm
b. Mitochondria
c. Stroma
d. Peroxisomes - C-4 cycle was first discovered in the ___________,
a. Pineapple
b. Sugarcane
c. Almond
d. Solanum tuberosum - Which C-4 acid is the reason for the name of the C-4 Cycle?
a. Succinic acid
b. Malic acid
c. Oxalic acid
d. Citric acid - Which one is a CAM plant?
a. Succulent Plant
b. Aquatic Plant
c. Halophyte
d. Mesophyte - Which one enzyme involved in the catalyzation of PEP into pyruvate?
a. Pyruvate kinase
b. Pyruvate enolase
c. Pyruvate oxidase
d. Pyruvate dehydrogenase - Lactate dehydrogenase in the tissue is for the purpose of___________________.
a. Interconversion of lactate & Pyruvate
b. Breakdown of pyruvate into Co2/H2O
c. Only present in a short time during lactic acid production
d. Only animal enzyme - Which of the following is the flavoprotein?
a. FMN
b. FAD
c. Both
d. None - Which one bacterial species is present in nodules of the legume family?
a. Azotobacter
b. Clostridium
c. Rhodospirillum
d. Rhizobium - Which one is discovered from the fungus?
a. GA
b. IAA
c. ABA
d. None - The hormones involved in the Bolting?
a. GA
b. IAA
c. ABA
d. None - Which one promotes leaf senescence and abscission?
a. GA
b. IAA
c. Cytokines
d. Ethylene - Which one botanist first term culture a plant by using phloem tissue?
a. Gottlieb Haberlandt
b. F. C. Steward
c. Takhtajan
d. Chalakhyan - Long Day flowering plant?
a. Soyabean
b. Lettuce
c. Cosmos
d. Xanthium - Semimonastic movements are due to?
a. Light
b. Temperature
c. Gravity
d. Differential changed in turgor - Statolith theory is about the explanation of __.
a. Turgor movements
b. Nastic movements
c. Geotropism
d. Haptonastic movements
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