What is true for cleavage?
Size of embryo increases
Size of cells decreases
Size of cells increases
Size of embryo decreases
Stratum germinativum is an example of which kind of epithelium?
Cuboidal
Ciliated
Columnar
Squamous
During embryonic development, the establishment of polarity along anterior /posterior, dorsal /ventral or medial / lateral axis is called:
Anamorphosis
Pattern formation
Organizer phenomena
Axis formation
A change in the amount of yolk and its distribution in the egg will affect:
Formation of zygote
Pattern of cleavage
Number of blastomeres produced
Fertilization
If mammalian ovum fails to get fertilized, which one of the following is unlikely?
Corpus luteum will disintegrate.
Estrogen secretion further decreases.
Primary follicle starts developing.
Progesterone secretion rapidly declines.
Cleavage in mammalian egg is:
Equal holoblastic
Unequal holoblastic
Superficial meroblastic
Discoidal meroblastic
Which part of ovary in mammals acts as an endocrine gland after ovulation?
Graafian follicle
Stroma
Germinal epithelium
Vitelline membrane
Which one of the following is the correct matching of the events occurring during menstrual cycle?
Ovulation — LH and FSH attain peak level and sharp fall in the secretion of progesterone
Proliferative phase—Rapid regeneration of myometrium and maturation of Graafian follicle
Development of corpus luteum — Secretory phase and increased secretion of progesterone
Menstruation — Breakdown of myometrium and ovum not fertilized
The function of copper-T is to prevent:
Egg maturation
Ovulation
Implantation of blastocyst
Gray crescent is the area:
At the point of entry of sperm into ovum.
Just opposite to the site of entry of sperm into ovum.
At the animal pole
At the vegetable pole.
