What external changes are visible after the last moult of a cockroach nymph?
Mandibles become harder
Anal cerci develop
Both fore wings and hind wings develop
Both fore wings and hind wings develop
C.
Both fore wings and hind wings develop
In cockroach, development is pauro metabolous. The nymph grows by moulting about 13 times to reach the adult form. The next to last nymphal stage has wings. Anal cerci are a pair of jointed filamentous structures in 10th segment of both sexes. The labium is a lover lip and a pair of mandibles are present in mouthparts of a cockroach.
Which of the following are likely to be present in deep sea water?
Archaebacteria
Eubacteria
Blue-green algae
Blue-green algae
The H -zone in the skeletal muscle fibre is due to
the absence of myofibrils in the central portion of A-band
the central gap between myosin filaments in the A-band
the central gap between actin filaments extending through myosin filaments in the A-band
the central gap between actin filaments extending through myosin filaments in the A-band
Which of the following are correctly matched with respect to their taxonomic classification?
Flying fish, cuttlefish, silverfish-Pisces
Centipede, millipede, spider, scorpion-insecta
House fly, butterfly tse-tse fly, silverfish-Insecta
House fly, butterfly tse-tse fly, silverfish-Insecta
Macromolecule chitin is
Nitrogen containing polysaccharide
phosphorus-containing polysaccharide
sulphur containing polysaccharide
sulphur containing polysaccharide
The Golgi complex plays a major role
in trapping the light and transforming it into chemical energy
in digesting proteins and carbohydrates
as energy transferring organelles
as energy transferring organelles
The essential chemical components of many coenzymes are
proteins
nuclei acids
carbohydrates
carbohydrates
One of the representatives of Phylum-Arthropoda is
cuttlefish
silverfish
pufferfish
pufferfish
Which group of animal belongs to the same phylum?
Malarial parasite, Amoeba, mosquito
Earthworm, pinworm, tapeworm
Prawn, scorpion, Locusta
Prawn, scorpion, Locusta
Select the correct match of the digested products in humans given in column I with their absorption site and mechanism in column (II).
|
Column I |
Column II |
|
Glycine and glucose |
Small intestine and active absorption |
|
Column I |
Column II |
|
Fructose and Na+ |
Small intestine passive absorption |
|
Column I |
Column II |
|
Glycine and glucose |
Small intestine and active absorption |
|
Column I |
Column II |
|
Glycerol and Fatty acids |
Duodenum and move as chilomicrons |
|
Column I |
Column II |
|
Glycerol and Fatty acids |
Duodenum and move as chilomicrons |
