Questions
The thylakoids are removed and kept in a culture medium containing carbon dioxide and water. If the set up is exposed to light, hexose sugars are not formed.
An appropriate reason for this can be
- the light trapping device is not functional
- enzymes needed are not available
- no integrated functioning of the two photosystems
- carbon assimilation cannot take place in light
- none of the above
Stanley Miller in his laboratory apparartus synthesised
- amino acids
- protobionts
- proteinoids
- protocells
- none of the above
The tendrillar movement is an example of
- phototropism
- geotropism
- hydrotropism
- chemotropism
- thigmotropism
Application of gibbrelic acid induces flowering in
- long day plants
- short day plants
- both 1 and 2
- neither 1 nor 2
- day neutral plants
During cyclic photophosphorylation
- light of wavelengths more than 680 nm is utilised
- no photolysis of water occurs
- shortage of oxidised NADPH is present
- neither O2 nor NADPH is produced
- all of the above
The strophiole is usually present in the seed of members of
- fabaceae
- asteraceae
- malvaceae
- solanaceae
- leguminoseae
Seeds of Carum copticum are used as an antispasmodic as they contain
- thymol
- atropine
- caffeine
- nicotine
- aconite
Loss of geotropic response is a marked deficiency of
- molybdenum
- calcium
- zinc
- copper
- boron
Nuclear fusion has been obtained between Arabidopsis + Brassica. The + mark indicates that the resultant is
- cybrid
- hybrid
- graft
- somaclone
- neotype
The term cereal applies to
- rice, wheat, maize, barley, oat, rye
- rice, sorghum, wheat, bajra and quinoa
- wheat, sugarcane, ragi and bajra
- rice, wheat, bajra, maize and buckwheat
- maize, rice, sorghum, millets and chick pea
Formation of microspheres, liposomes and coacervates all require
- RNA
- Proteins
- Phospholipids
- Lipids
- Self assembly
Which of the following is not a component of an operon of a prokaryote?
- Operator
- Terminator
- CAP
- TATA box
- Regulator
The final electron acceptor during the light reaction of photosynthesis is
- NADP
- Ferredoxin
- Plastoqinone
- Cytochromes
- Plastocyanin
Tea yellows is caused by the deficiency of
- potassium
- magnesium
- copper
- sulphur
- manganese
Which one of the following is not a characteristic of tundra?
- Vast coniferous forests
- Permafrost
- Windy area
- Wildfire
- Very less human activity