Anterior part of neural tube gives rise to:

Clear cytoplasm produces

For maximum growth, the optimum temperature is 25-30 CENTIGRADE & it is least at

Secondary growth refers to increase in:

Cambuim is a example of

Which one of the following is not a growth region

The abnormal development of a small skull is the condition known as

Which one regenerates its arm?

Neurula is the stage in which embryo has:

The pigment free area that appears at the time of fertilization is called

The growth rate is influenced by

During elongation the cell volume increases up to: (Grw 2015)

It is characterized by the presence of a space called blastocoele:

Yellow cytoplasm of ascidian zygote gives rise to: (Lhr 2013

Intercalary meristems are situated at: (Bwp 2015)

The peripheral part of the blastoderm of chick embryo where the cells lie unseperated from the yolk is:

The occurrence of all the following stages during developmental process is true Except:

The meristems present at the base of inter nodes are called:

The mesodermal cells do not invaginate but migrate medially and caudally

The discoidal cap of cells above the blastocoel

Gray vegetal cytoplasm gives rise to:

In incubating eggs artificially, the incubators are usually regulated at temperature between:

Which one of these produces larval epidermis:

This stage is characterized by the movement and rearrangement of cel's in the embryo:

The ectoderm & mesoderm are formed from

Which one regenerates pincer claw

Gastrulation involves

The cavity formed between somatic and splanchnic mesoderm is:

Which one is not related with neurulation?

In plants ,having ability to divide are known as:

In flatworms and planaria, the unspecialized cells are always present in the body of adult.

Secondary growth leads to an increase in the diameter (thickness) of the

Optimum temperature for growth of plants is: (Fsd 2015, Lhr 2014 G I)

The three germinal layers formed during

Who did perform experiments on Acetabularia?

It is an ordered sequence of irreversible steps, with each step setting up the necessary conditions for the next step:

In 18 hour old chick embryo, one of prominent structural features is

Great power of regeneration is met within

Environmental factors causing abnormal development are grouped together as (Swl 2016)

Which one of the following sex chromosomal abnormalities leads to tallness, aggressiveness and antisocial behaviour?(D.G.Khan 2015 Group I)

The capacity of some cells to evoke a specific developmental response in others

Harelip condition is also called

Acetabularia consists of a base, a stalk and a

Turner's syndrome is the condition in which one X chromosome is

The mesodermal cells of the chick embryo migrate medially, caudally from both sides and create a midline thickening called;

The ectoderm develops into the:

Coelom is farmed between

A embryo consisting of closely packed rounded mass of blastomeres is known as:

Grey equatorial cytoplasm gives rise to

The branch of biology dealing with the study of development of a zygote till it is hatched or borne is called:

Primary growth in plants is caused by (Sgd 2016)

An embryo having neural plate of tube is said to be?

Root primordial develop from the root cambium called:

Nucleus in Acetabularia is:

it gives rise to muscle cells

The process of converts the single-called zygote structure in most animal embryos

At the cephalic end of primitive streak, closely packed cells form local thickening known as

The chick embryo completes its development in

Work an embryonic induction was done by Spemann and Mangold in:

The meristem present at the apices of roots and shoots are knoWn as:

Presumptive neural ectoderm is present on which surface of gastrulla

The plant hormone that inhibit the growth of lateral shoots:

During the maturation phase of growth the cells which elongate lengthwise are

The growth pattern in plants is of

They are situated at bases of internodes in many plants:

The unspecialized cells present in flatworms and planaria are:

In the zone of elongation, the volume of the cells increases up to

Which light enhance cell division and retard cell enlargement:(Lhr 2014 G II)

Chromosomal syndromes lead to

Cleavage results in a structure called

The shell of chick egg is secreted as egg passes through

Yellow cytoplasm gives rise to (Mirpur Kashmir 2015)

Branch of biology which deals with the study of abnormal development and their causes is called: (Bwp 2016)

Meristems are young tissues or group of cells that retain the potential to

The negative physiological changes in our body are called

At the cephalic end of primitive streak,closely packed cells form a local thickening known as:

During development coelom is formed by

In Klinefelter's syndrome the sex chromosomes are

it gives rise to muscle cells:

Apical dominance is caused due to

Immediately after fertilization, the egg undergoes a series of mitotic divisions called:

In vascular plants, growth occurs through the activity of the;

Special mesodermal cells lying between the somatic and side plate mesoderm of embryo of frog, which eventuallygive rise to urinary system are:

Klinefelters syndrome is an example of

Adetnbularia is an:

Study of aging is called: (Swl 2015)

Degeneration & disappearance of drastic. tissue in of blood vessels results in arteriosclerosis

Acetabularia is an/a

Grey vegetal cytoplasm gives rise to

The hypoblast is mainly presumptive: (Rwp 2013)

In which developmental stage, germs layers are formed (Rwp 2015)

The specific regions of plant where growth occurs are called:

Immediately after fertilization, the egg undergoes a series of mitotic division called:

The removal of apex releases the lateral buds from the apical dominance. It is called:

Movement and rearrangement of the cells in the embryo is called

Mainly nervous system is formed from

Hans Driesch performed his experiment on embryology with the eggs of;

Lateral meristems include:

Earthwarm can regenerate its

It is the condition that leads to tallness, aggressiveness mental defect and anti-social behaviour

Mosulla is characterized by

Neural plates is formed from

Grey equatorial cytoplasm gives rise to: (Fsd 2016, Mir Kashmir 2016)

Which one of the following shows poor regeneration

The syndrome which is an example of the sex chromosome is:

The branch of biology which dealt with abnormal development and its causes its termed as

The study of human populations and things that affect them is called:

Environmental factors causing or contributing to abnormal development are called

The unspecialized cells present in flatworms and planaria are:

The process through which one group of cells influences the way in which another group of cell becomes differentiated is

The pigment free area that appears at the time of fertilization is called:

An embryo having segmentation cavity is known as:

Apical meristems are responsible for:

The hypoblast of chick embryo is presumptive

The internal factors which influence the growth rate in plants are the hormones, water and

The mesodermal cells do not invaginate but migrate medially and caudally from both sides and create a midline thickening called:

Active shoot apes controls development of:

Spemann performed his experiments on which of following

Which of the following light favours elongation of cells:

Blastomere are formed during: (Fsd 13)

Acetabularian has irregular shaped cap:

Cleft palate In human being is also called

The programmed series of stages from a simpler to a more complex form constitutes the process of:

Poor vision dryness, loss of hair pigment is signs of

Conversion of a haploid cell into a diploid cell occurs during in most animals

The ability to regain or recover lost or injured part of the body is called