- Structure present in all vertebrates is
- Notochord
- Dorsal tubular nervous cord
- Pharyngeal gill slits
- Renal Portal system
- In vertebrates which one of the following structure believe to have been transformed into thyroid
- Pygostyle
- Urostyle
- Anal style
- Endostyle
- Which one of the following does not have a specialized heart?
- Amphioxus
- Dog fish
- Chameleon
- Scaly ant eater
- Solid ball of the cell produced by repeated cleavage is called
- Morula
- Blastula
- Gastrula
- Neurula
- In which stage of development rate of cell division decrease
- Morula
- Blastula
- Gastrula
- Zygote
- Morphogentic movement occur during a
- Morula stage
- Blastula stage
- Gastrula stage
- Zygote
- In gastrula stage which layer are formed
- Ectoderm
- Endoderm
- Mesoderm
- All of these
- Preparation for cell differentiation are completed
- Morula
- Blastula
- Gastrula
- Neruda
- Which distinguish a morula from blastula
- Absence of cavity
- Presence of a cavity
- a and b
- none
- Embryologist can presume the future organs of embryo at
- Blastula
- Early gastrula
- Morula
- Post gastrula
- Fluid filled in the blastocoel cavity is
- Acidic
- Saline
- Pure water
- Albuminous
- The embryo with 16 cells is called
- Blastocyst
- Blastomere
- Morula
- Cleavage
- What time period is required to form blastocyst?
- One week
- 8 days
- Two week
- 10 days
- The fluid within the blastocyst is formed by the cell of?
- Blastomere
- Trophoblast
- Inner layer
- None of these
- The type of blastula formed in Bird is
- Holoblastula
- Stereoblastula
- Discoblastula
- Teleblastula
- Which of the following structure is formed in blastula
- Segment cavity
- Notochord
- Gills
- Tail
- Blastocyst is formed during
- Early blastula
- Horula stage
- Early gastrula stage
- Late gastrula stage
- Blastopore is found
- Gastrula and opening of archenteron
- Blastula and opening of blastula
- A and b
- None
- Blastopore develop into future
- Ear
- Anus
- Mouth
- Neuropore
- Periblastula is found in
- Man
- Insect
- Reptile
- Birds
- A blastula which is sold is known as
- Stereoblastula
- Coeloblastula
- Discoblastula
- Superficial blastula
- Unit cells of blastula are called
- Micromere
- Megameres
- Blastomers
- Blastocyst
- Blastoderm or germinal disc refers to protoplasm of an egg this is restricted to small area in
- Amphibians egg
- Reptilian egg
- Avian egg
- Mammalian egg
- Which of the following is absent in blastula
- Blastomere
- Blastocoel
- Blastoderm
- Blastopore
- Blastocyst present in
- Kangaroo
- Man
- Monkey
- Both b and c
- Outermost layer of blastocyst which form the ectoderm
- Cnidoblast
- Germinal vesicles
- Trophoblast
- Amnion
- Pregnancy Begin with the implantation of
- Embryo
- Fertilized ovum
- Blastocyst
- Blastopore
- Which is correct sequence
- Fertilization, zygote, cleavage, morula , blastula, gastrula
- None
- Fertilization , zygote, cleavage, blastula
- And c both
- Sexually reproducing multicellular animals start their development form
- Gastrula
- Blastula
- Unicellular zygote
- Ovum
- which is formed at the Time of gastrulation
- Gills
- Heart
- Archenteron
- Inner mucus
- Gastrulation is a process during which
- Formation of archenteron
- Morphogentic movement occur
- All germ layers
- All of these
- Antrum is a cavity of
- Ovary
- Blastula
- Gastrula
- Graffian follicle
- The ducts of female amniotes develop into
- Ureater
- Oviduct
- None
- A and b
- The follicle cells surrounded the human egg constitute
- Zona pellueida
- Vitula membrane
- Corona radiata
- Zona radiata
- In human sperm the cytoplasm around the mitochondria is
- Acrine
- Manchette
- Centroplasm
- None
- Supporting cells found in germinal epithelium of tests are
- Stertoli cells
- Leydig cells
- None
- B and a
- Release of seminal fluid in the vagina of female is
- Ejaculation
- Implantation
- Insemination
- None
- Majority of mammalian spermatozoa acquire capacitation in
- Epididymitis
- Oviduct
- Seminiferous tubules
- Uterous
