Multiple Choice QuestionsPlanaria possess high capacity of
metamorphosis
regeneration
alternation of generation
alternation of generation
A marine cartilaginous fish that can produce electric current is
Pristis
Torpedo
Trygon
Trygon
B.
Torpedo
Torpedo is a marine cartilaginous fish which produces 8-220 volt electric charge (current) depending on species. Their electric organs are modified lateral muscle plates innervatted by carnrial nerves.
Trygon (sting ray) resembles electric ray in many aspects but is devoid of electricity discharging (or producing) organs.
Scoliodon (dog fish) is known for its great sense of smell. Pristis or common saw fish (also known as carpenters shark) is charactesised by a long, narrow, flattened rostrum lined with sharp transverse teeth to resembles a saw.
Choose the correctly matched pair.
Tendon - Specialised connective tissue
Adipose tissue - Dense connective tissue
Tubular parts of nephrons - Cuboidal epithelium
Tubular parts of nephrons - Cuboidal epithelium
Choose the correctly matched pair.
Inner Lining of salivary ducts - Ciliated epithelium
Moist surface of buccal cavity - Flandular epithelium
Tubular parts of nephrons - Cuboidal epithelium
Tubular parts of nephrons - Cuboidal epithelium
In S - phase of the cell cycle
amount of DNA dobles in each cell
amount of DNA remains same in each cell
chromosome number is increased
chromosome number is increased
Select the option which is not correct with respect to enzyme action.
Substrate binds with enzyme as its active site
Addition of lot of succinate does not reverse the inhibition of succinic dehydrogenase by malonate
A non- competitive inhibitor binds the enzyme at asite distinct from that which binds as the substrate
A non- competitive inhibitor binds the enzyme at asite distinct from that which binds as the substrate
Which one of the following is a non-reducing carbohydrate?
Maltose
Sucrose
Lactose
Lactose
The enzyme recombinase is required at which stage of meiosis
Pachytene
Zygotene
Diplotene
Diplotene
Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs
as bicarbonate ion
in the form of dissolved gas molecules
by binding to RBC
by binding to RBC
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