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

52.

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

Ornithophily refers to the pollination by which of the following

• insects

• birds

• snails

• air

Which of the following is an example of man-made ecosystem

• Herbarium

• Aquarium

• Tissue culture

• Forest

Which one of the following leucocytes transforms into macrophages

• Eosinophil

• Basophil

• Monocyte

• Lymphocyte

Mention the "Incubation Period" of Plasmodium vivax

• 10-14 days

• 20-25 days

• 30 days

• 45 days