Hydra receives impulses and stimuli through
nerve net
nematocytes
sensory cells
flame cells
C.
sensory cells
In Hydra sensory cells are found in the gastrodermis. They are supposed to be stimulated by the entry of the prey into the gastrovascular cavity.
Algae are useful because they
are large in number
are used in alcoholic fermentation
purify the atmosphere
are used in curdling of milk.
The plant body of moss (Funaria) is
completely sporophyte
predominantly sporophyte with gametophyte
completely gametophyte
predominantly gametophyte with sporophyte
If turgor pressure becomes equal to the wall pressure, then
water leaves the cell
water enters the cell
no exchange of water takes place
solute goes from the cell into water
Non-cellular layer that connects inner surface of the epithelial tissue to the connective tissue is
basement membrane
epidermis
dermis
either (b) or (c).
Which of the following structures helps in the respiration of lichens?
Soredia
lsidia
Cyphella
Cephalodia
In Entamoeba histolytica, the presence of chromatid bodies is characteristic of
precystic stage
mature quadrinucleate stage
trophozoite stage
mature binucleate stage
Which of the following Phyla are included in Enterozoa?
Annelida, Mollusca, Porifera
Echinodermata, Hemichordata, Porifera
Mollusca, Arthropoda, Hemichordata
Porifera, Mollusca, Arthropoda
The sites of the first, second and third moulting of the Ascaris larva are respectively
soil, lung and intestine
liver, stomach and intestine
soil, alveoli and alveoli
soil, intestine and lung
