Guard cells help in:
Options
(a) transpiration (b) guttation (c) fighting against infection (d) protection against grazing
Correct Answer:
transpiration
Explanation:
Guard cells help in transpiration. Transpiration is the evaporation of water from […]
T.O. Diener discovered a:
Options
(a) free infectious DNA (b) infectious protein (c) bacteriophage (d) free infectious RNA
Correct Answer:
free infectious RNA
Explanation:
Theodor O. Diener discovered the Potato Spindle Tuber Viroid […]
Synapsis occurs between:
Options
(a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete
Correct Answer:
two homologous chromosomes
Explanation:
Synapsis (also called syndesis) […]
Point mutation involves:
Options
(a) change in single base pair (b) duplication (c) deletion (d) insertion
Correct Answer:
change in single base pair
Explanation:
A point mutation is a simple change in one […]
manganese is required in:
Options
(a) Plant cell wall formation (b) photolysis of water during photosynthesis (c) chlorophyll synthesis (d) nucleic acid synthesis
Correct Answer:
photolysis of water during photosynthesis
Explanation:
Manganese is […]
Somaclones are obtained by
Options
(a) plant breeding (b) irradiation (c) genetic engineering (d) tissue culture
Correct Answer:
tissue culture
Explanation:
No explanation available. Be the first to write the explanation for this question […]
Cytoskeleton is made up of:
Options
(a) callose depsits (b) cellulosic microfibrils (c) proteinaceous filaments (d) calcium carbonate granules
Correct Answer:
proteinaceous filaments
Explanation:
The cytoskeleton is made up of three kinds of […]
Elbow joint is an example of:
Options
(a) hinge joint (b) gliding joint (c) ball and socket joint (d) pivot joint
Correct Answer:
hinge joint
Explanation:
Elbow joint is an example of hinge joint. […]
One of the synthetic auxin is:
Options
(a) IAA (b) GA (c) IBA (d) NAA
Correct Answer:
NAA
Explanation:
NAA is a synthetic auxins. Some of the most widely used weed killers are synthetic […]
Compared to blood our lymph has:
Options
(a) plasma without proteins (b) more WBC s and no RBC s (c) more RBC s and less WBC s (d) no plasma
Correct Answer:
more WBC […]
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