NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Botany MCQs (Practice_Test 49 of 104)
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- Consider the following statements Cytochrornes are small proteins that contain a cofactor copper Plastocyanin carries electrons on its metal atom iron Which of the statements given above is/are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Which one of the following is the competitive inhibitor of succinct dehydrogenate which participates in Krebs cycle?
- Malonate
- Succinate
- Citrate
- Fumarate
- A germinating mustard seed converts its lipids into sugars by
- TCA cycle
- Glyoxylate cycle
- Calvin cycle
- Glycotate pathway
- Consider the following statements:
- Mycorrhizae decrease the efficiency of plants to absorb phosphorus from the soil
- Only certain prokaryotes synthesize the enzyme nitrogen՚s
- Which of the above statements s/are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Consider the following compounds:
- Pyridoxal phosphate
- Tetrahydrofdlate
- Thiamine pyrophosphate
- Lipoid acid
- Which of the above belong to the coenzymes of Pyruvate dehydrogenate complex?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Which one of the following is the essential nutrient element required in the photosynthetic oxidation of water?
- Magnesium
- Iron
- Manganese
- Molybdenum
- Consider the following statements:
- Cutin is a fatty acid polymer
- Starch is composed only of glucose residues
- Which of the statements given above is/are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
- Which one of the following is the causative factor of guttation?
- Temperature
- Sunlight
- Osmosis
- Root pressure
- Consider the following plants:
- Curcuma longa
- Ferula asafoetida
- Myristica fragrans
- Smilax aristolochiaefolia
- From which of the above plants are underground parts used for obtaining spices or products of commercial value?
- 1 and 2
- 3 and 4
- 1,2 and 4
- 1,2, 3 and 4
- The verbalization effect is perceived by the
- Leaf tip
- Shoot apex
- Root
- Petiole
- Dormancy is induced by
- Brassins
- Polyrnines
- Abscises acid
- Indoleacetic acid
- Application of which of the following hormones delays the onset of senescence in detached leaves?
- Ethylene
- Abscises acid
- Gibberellins
- Cytokine
- Caffeine, a constituent of tea and coffee is actually
- A polyamine
- An oligosaccharide
- An alkaloid
- A lipoprotein
- In photoperiodic induction to flowering, what is the site of perception?
- Partially mature leaves
- Older leaves
- Entire plant
- Apical meristem
- The enzyme nitrogen՚s that fixes atmospheric nitrogen in the root nodules of leguminous plants comprises two subunits, the composition of each respectively being
- Fe-protein and Fe-Mo-protein
- Mo-protein and Fe-Mo-protein
- Va-protein and Fe-Mo-protein
- Fe-protein and Fe-Va-protein