Any change in the environment of an organism is called___________??
A. Stimulus
B. Variation
C. Response
D. Reaction
Category: Biology Mcqs
Centrioles are composed of ________ triplets of microtubules.?
A. 3
B. 9
C. 10
D. 15
Reverse transcriptase is present in____________??
A. All RNA viruses
B. All DNA viruses
C. All retroviruses
D. All viruses
Which Vitamin is needed for the formation of a light-sensitive pigment in the retina.?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. B complex
Biological sciences have a set methodology and it is based on ??
A. Experimental inquiry
B. Esthetic preference
C. Philosophical ideas
D. Imaginations
Which of the following organisms have Chitin as a major structural component of their cell wall________________??
A. Prokaryotae
B. Protoctista
C. Plantae
D. Fungi
Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________??
A. Its short thick branched horizontally growing rhizome
B. Fibrous adventituous roots arise from the lower side of rhizome
C. Shows heteromorphic alternation of generation
D. Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures
Hepatic and Pancreatic secretions are also stimulated by a hormone produced by the intestinal mucosa. The hormone is___________??
A. Creatin
B. Gastrin
C. Secretin
D. Pepsin
Co-ordination in man is brought about by___________??
A. Nervous system
B. Endocrine system
C. Both of these
D. none of these.
Sperms are _________ in origin.?
A. Ectodermal
B. Mesodermal
C. Endodermal
D. None of these
