Botany
Which of the following is not correct for C₄ plants?
A.
These are less efficient for photosynthesis
B.
They have kranz anatomy
C.
These are less efficient for photorespiration
D.
These have PEP as CO₂ acceptor
Which of the following is electron and proton carrier?
A.
Plastocyanin
B.
Plastoquinone
C.
Cytochrome
D.
Fe-S Protein
Which one of the followings is represented by Calvin Cycle?
A.
Reductive carboxylation
B.
Oxudative carboxylation
C.
Photophosphorylation
D.
Oxidative phosphorylation
Phosphoenolpyruvate carboxykinase catalyzes the conversion of:
A.
Pyruvate to alanine
B.
Pyruvate to phosphoenol pyruvate
C.
Phosphoenol pyruvate to oxaloacetate
D.
Oxaloacetate to phosphoenolpyruvate
If pyruvic acid is reduced directly then:
A.
Ethanol is formed
B.
Acetaldehyde is formed
C.
Lactic acid is formed
D.
CO₂ is evolved
Root pressure is maximum when:
A.
Transpiration is very low and absorption is very high
B.
Transpiration is high and absorption is very low
C.
Absorption is very high and transpiration is also very low
D.
Absorption is low and transpiration is also low
When water potential of a cell equals to osmotic potential, the pressure potential of the cell will be:
A.
Same as water potential
B.
Same as osmotic potential
C.
Same as chemical potential
D.
Zero
A monocarpic plant is one which:
A.
Has only one carple
B.
Flowers once In a life-time
C.
Produce only one seed
D.
Produces only one fruit
Heathlands are characterized by:
A.
Herbaceous Vegetation
B.
Low shrubby vegetation
C.
Trees and shrubs
D.
Trees and grasses
Gram (Cicer) belongs to the family:
A.
Gramineae
B.
Solanaceae
C.
Liliaceae
D.
Leguminoseae
Recessive Epistatic ratio is:
A.
9:3:3:1
B.
9:3:4
C.
12:3:1
D.
3:1
Frame shift mutation occurs due to:
A.
Addition of gene
B.
Addition of one or more bases in DNA template
C.
Deletion of one or more bases in mRNA
D.
Deletion or addition of one or more bases in DNA template
Replication of DNA on its lagging strand takes place in:
A.
Okazaki fragments
B.
Nucleosomes
C.
Nucleoids
D.
Nuclein
A functional unit in a gene is:
A.
Intron
B.
Cistron
C.
Muton
D.
Recon
The number of base-pairs in one turn of DNA are:
A.
Nine
B.
Ten
C.
Eleven
D.
Twelve
A bicollateral vascular bundle is one which has:
A.
Phloem only
B.
Xylem only
C.
Phloem on both sides of xylem
D.
Xylem on both sides of phloem
The cambium which produces cork is known as:
A.
Phelloderm
B.
Phellogen
C.
Periblem
D.
Periderm
Annual rings are more distinct in plants growing in:
A.
Savana habitat
B.
Arctic habitat
C.
Grassland habitat
D.
Temperate and tropical habitat
Where do the casparian bands occur?
A.
Epidermis
B.
Endodermis
C.
Pericycle
D.
Phloem
Bordered pits are commonly found in:
A.
Monocots
B.
Dicots
C.
Pteridophytes
D.
Gymnosperms
The xylem is exarch in:
A.
Stem
B.
Petiole
C.
Root
D.
Lamina
Ribosome 70S breaks into:
A.
40S and 30S
B.
50S and 30S
C.
45S and 25S
D.
50S and 20S
The fungus causing 'damping off' disease is:
A.
Obligate parasite
B.
Obligate saprophyte
C.
Facultative parasite
D.
Facultative saprophyte
Translocation of carbohydrate nutrients usually occurs in the form of:
A.
Glucose
B.
Maltose
C.
Fructose
D.
Sucrose
Stomata close during water deficit in response to:
A.
Abscisic acid
B.
Auxins
C.
Ethylene
D.
Cytokinins