Growth of Zygote
Growth of Zygote: Overview
This topic covers concepts such as, Implantation, Embryo, Morula and Differentiation of Cell etc.
Important Questions on Growth of Zygote
The twins formed from the fertilization of two separate eggs during the same pregnancy are called
The twins formed from a single ovum and fertilized by a single sperm are called
Cell differentiation is the development of a single-celled zygote into a multicellular embryo.
_____ cells are those cells that can be differentiated into any other cell type.
_____ (Transcription/Recombination) factors are key to the cell differentiation process.
Morula is a developmental stage between two of the following:
The number of cells present in the morula stage is _____. (Write it numerically)
A blastocyst is a hollow ball, surrounded by a single layer of cells enclosing a cavity called the blastocoel or the cleavage cavity.
Identify the part labelled 'A' from the figure given below.
Embryonic membranes are formed from a layer of cells called _____ of blastula.
How many cells are present in morula stage.
Fill the blanks in the given statements and select the correct option.
A. The developmental stage of an animal passed in the mother's womb is called (i)
B. The outer layer of blastula is called (ii) . It does not take part in the formation of (iii)
C. (iv) is the first germ layer formed from the inner cell mass by differentiation.
Given below are four statements each with one or two blanks. Select the option which correctly fills up the blanks in any two statements.
(A) The embryo with 8 to 16 blastomeres is called (i).
(B) Embedding of the (i) in the endometrium of the uterus is called implantation and it leads to (ii).
(C) After implantation, finger-like projections appear on the trophoblast called (i), which are surrounded by the (ii) and maternal blood.
(D) Inner cell mass contains certain cells called (i) cells which have the potency to give rise to all the tissues and organs.
Read the given statements and select the correct option.
Statement 1: Upto morula stage, the cells divide without any increase in size.
Statement 2: Zona pellucida remains intact till the cleavage is complete.
Which of the following statements about morula in humans is correct?
Which of the following statement is correct with respect to the morula stage of embryo?
