Which one of the following is vestigeal organ of human
Hair
Intestine
Wisdom teeth
Muscle of glottis
C.
Wisdom teeth
Vestigeal organs are present in reduced form and are of no use to the animal in which they are present. Man has 180 vestigeal organs. e.g., nictitating membrane, vermiform appendix, wisdom tooth, muscle of pinna and forhead, mammary glands in male etc.
A man of blood group 'A', marries a woman of blood group 'B', both of them are heterozygous for blood group, chances of their first child having blood group AB will be
25%
50%
75%
100%
Which of the following pairs is correctly matched
Central dogma- Codon
Okazaki fragments - Splicing
RNA polymerase -RNA primer
Restriction enzymes - Genetic engineering
Stanley Miller performed an experiment to prove the origin of life. They took gases NH3 and H2 along with
N2 and H2O
H2O and CH4
CH4 and N2
CO2 and NH3
If the pollen tube enters the ovule through funiculus, the phenomenon is known as
porogamy
chalazogamy
mesogamy
heterogamy
Which of the following is the most resistant material in pollen grain
Sporopollenin
Intine
Exine
Certicle