Late gastrula in frog shows:
A.Ectoderm, endoderm, blastopore and archenteron
B.Ectoderm, mesoderm, blastopore and archenteron
C.Ectoderm, endoderm, blastocoel and archenteron
D.Ectoderm, mesoderm, blastocoel and archenteron
Category: Embryo Genesis Mcqs
Development of Indian frog is completed in about:
A.1/2 month
B.1
C.2
D.3 – 4 months
Three processes involved in the gastrulation of frog are in which of the following sequences:
A.Epiboly, invagination, cleavage
B.Involution, invagination, cleavage
C.Involution, epiboly, evagination
D.Involution, epiboly, invagination
Which of the following structures are formed by the ectoderm in frog:
A.Epidermis, stomodaeum and proctodaeum
B.Retina, lens, cornea and conjunctiva of the eye
C.Olfactory lobes, autitory vesicle, pituitary, pineal body and adrenal medulla
D.All of these
In rabbit the placenta according to distribution of trophoblastic villi is:
A.Zonary
B.Cotyledonary
C.Discoidal
D.Metadiscoidal
Which of these is an extra embryonic membrane:
A.Amnion and chorion
B.Allantois
C.Yolk sac
D.All of these
3rd cleavage in frog’s egg begins after:
A.1-2 hours of fertilization
B.3-4 hours of fertilization
C.4-5 hours of fertilization
D.8-10 hours of fertilization
Morula in frog is:
A.8 celled
B.16 celled
C.32 celled
D.64 celled
Epiboly occurs in the:
A.Micromeres only
B.Macromeres only
C.Micromeres and macromeres both
D.None of these
Upwardly directed pigmented part of frog’s egg is related with:
A.Camouflage
B.Supply of the nourishment
C.Colouration
D.Respiration
