Archaeopteryx is
a living fossil
a mammal
a connecting link between Annelida and Arthropoda
a connecting link between reptiles and birds
D.
a connecting link between reptiles and birds
Archaeopteryx (lizard bird) is a prin itive fossil bird, which existed on earth about some 150 million years back. It is a connecting link between reptiles and birds.
It characteristic feature are wings, feather, prolonged beak (birds), teeth in beak, keetless-sternum, long tail with unfused vertebrae, pygostyle absent, separate digits of wings and claws on fingers (reptiles).
A woman has a haemophilic son and three normal children. Her genotype and that of her husband with respect to this gene would be
XX and XhY
XhXh and XhY
XhXh and XY
XhX and XY
Which of the following is a mismatch?
Amphetamine - a stimulant
Morphine - an opiate narcotic
LSD - a hallucinogen
Cocaine - a sedative/ tranquillizer
The causative agent of filaria is
Wuchereria bancrofti
Leishmania donovani
Plasmodium vivax
Trypanosoma gambiens
A normal woman is married with a man having hypertrichosis condition. They got one daughter and one son. What is the possibility of this daughter to have hypertrichosis condition?
0%
25%
50%
100%
Which of the following embryonic membranes structure is excretory in function?
Amnion
Allantois
Yolk sac
Vitelline chorion
Process of maturation and development of sperms is called
oogenesis
spermatogenesis
spermiogenesis
None of these
Which of the following is a mismatch?
Giraffe - Lamarck
Drosophila - Morgan
Galapagos island - Darwin's finches
Origin of species - Mendel
Which of the following is not related to sex chromosome X or Y?
Turner's syndrome
Klinefelter's syndrome
Down's syndrome
Haemophilia and colour bindness
