Multiple Choice QuestionsPlanaria possess high capacity of
metamorphosis
regeneration
alternation of generation
alternation of generation
B.
regeneration
Planaria are the type of flatworms belonging to phylum-Platyhelminthes. They are the simplest from of multicellular animal. The have a high capacity of regeneration of new tissue at the wound site via cell proliferation ( blastema formation) and the remodelling of pre-existing tissue to restore symmetry and proportion. This is due rieoblast cells.
The cells are usually scattered through out the body and are able to participate in any type of development. The regenerative capacity of different body sections is an indicator of the presence of different numbers of neoblast cells.
A marine cartilaginous fish that can produce electric current is
Pristis
Torpedo
Trygon
Trygon
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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