Growth And Development Flashcards
The part of apical meristem which becomes separated from Apex by permanent tissues is called
Intercalary mystem
Egg of bird is
Polyelecthical type
The reconstruction of Lost parts of body
Regeneration
Science of aging is known as
Gerontology
In chick 🐣 the cleavage is
Irregular and discoidal type
The outcome of cleavage is
Cytoplasmic localisation
Blastula contains
Blastocoel
Fertilized egg is laid —– after fertilization
24 hours
Fertilize egg to be kept at which temperature by mother hen or artificially incubator
36-38°C
Hatching takes place in how many days
20
Fishes reptiles and birds have a cleavage
Meroblastic type or incomplete
The cleavage in birds is restricted to the blastodisc lying on the top of your this type of cleavage is termed as
Discoidal cleavage
Embryo becomes rounded mass of blastomeres and therefore is called
Morula
Fluid filled cavity of blastula is called
Blastocoel
Egg is laid almost at this stage
Blastula
Next stage followed by blastula is called
Gastrula
Neural tube arise from
Nervous system
Process by which neurula is formed is called ?
Neurulation
Progressive detrioration in the normal structure and function of tissue is called
Aging
Which have great power of a regeneration
Sponges
Salamanders and lizards can regenerate their
Tails
Regeneration in birds is limited
Small wounds
Small size of the skull ?
Microcephaly
Split in upper lip and gap in roof of mouth
Cleft palate
Excessive number of fingers are toes
Polydactyly
When heart is placed towards the right side of chest
Dextrocardia
Abnormal sickle shaped RBC
Sickle cell anaemia
Female sexual deffect
Turner’s syndrome
Male sexual edffect
Kline Felter syndrome
Fragile RBC cause hemolytic anaemia
Thalassemia
Inability of the blood to cloth
Haemophilia
Physical & physical retardation
Down syndrome
The growth of plant organ when related with the growth of other organs are called
Correlation
Animal begin their life as a single diploid cell called
Zygote
External condition which alter the rate of growth
Temperature
light
intensity of light
oxygen
carbon dioxide
nutrients
Secondary growth may be defined as :
Increase in diameter of stem and root due to activity of secondary meristem called cambium
Which contain lateral meristem
Gymnosperms and most dicots