Third cleavage of frog's development is
equatorial
vertical
latitudinal
none of these
C.
latitudinal
First and second cleavage in frog are holoblastic, complete, equal, vertical, whereas third cleavage is holoblastic, complete, unequal, latitudinal or horizontal and near the animal pole. It results in the formation of 8 cells of three are black micromeres which have less or no yolk, so divide faster and 4 are colourless macromeres
Which of the following assists in the locomotion of the organism stated
Epithelium of' Pheretima
Trichocysts of Paramecium
Pedicellaria of Star fish
Posterior sucker of Hirudinaria
The red colour of 'red sea' is due to which of the following blue-green algae?
Chlamydomonas nivalis
Anabaena
Microcystis
Trichodesmium
In frog, the vertebra with an anterior convex surface (i.e., double convexties) is
atlas
urostyle
8th vertebra
9th vertebra
