Which of the following is correct
Haemophilic-Y-chromosome
Down's syndrome-21' chromosome
Sickle cell anaemiaX-chromosome
Parkinson's disease-X and Y-chromosome
Genetically engineered bacteria are being employed for production of
thyroxin
human insulin
cortisol
epinephrine
Scientific name of sunflower is
Hibiscus rosa-sinensis
Solanum nigrum
Oryza sativa
Helianthus annuus
By which of the following methods, new and better varieties of plants can be formed
Selection
Grafting
Hybridization
Hybridization followed by selection
Chromosomes can be stained with one of the following chemicals
acetocarmine
safranine
light green
eosin
Which one of the following is the American poultry breed
Australop
Assel
Minorica
Rhod Island Red
Which of the following is an example of man-made ecosystem
Herbarium
Aquarium
Tissue culture
Forest
B.
Aquarium
An ecosystem which is made and controlled by human beings but meets all the criteria of anecosystem is called man made ecosystem. With out human intervention and supervision a man made ecosystem will be disintegrated. A man made ecosystem is comparatively less complex when compared to a natural ecosystem.
Which one of the following leucocytes transforms into macrophages
Eosinophil
Basophil
Monocyte
Lymphocyte