Multiple Choice QuestionsWhich one is not correct?
Human - Ureotelic
Birds - Uricotelic
Lizards - Uricotelic
Whale - Ammonotelic
Which one of the following is vestigeal organ of human
Hair
Intestine
Wisdom teeth
Muscle of glottis
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
Documented microfossils have been found that are as old as
2.5 billion years
1.5 billion years
3.5 billion years
2.5 million years
The correct sequence for the formation of chemicals on the primitive earth is
NH3, protein, carbohydrate and nucleic acid
NH3, water, nucleic acids and proteins
NH3, nucleic acids, protein and carbohydrate
protein, carbohydrate, water and nucleic acids
Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters
Absence of limbs in snakes
Melanisation in peppered moth
Presence of webbed toes in aquatic birds
Lack of pigment in cave-dwelling animals
B.
Melanisation in peppered moth
Industrial melanism is an adaptation where the moths living in the industrial areas developed melanin pigments to match their body to the soot-covered surroundings. The phenomenon provides an excellent example of operation ofselection in natural conditions. Industrial melanism, therefore, presents an excellent example ofnatural selection (proposed by Darwin), but it is not the example of acquired characters proposed by Lamarck.
In caves, due to absence of light, the body of the animal lacks pigmentation, e.g., Proteus anguinus. In pythons and related snakes rudimentary pelvic girdle and traces of hindlimb are present. They form small clawed projections externally, but internally there are vestiges of an ilium, femur, tibia and a claw. In aquatic birds and flying frog, the feet are webbed which sustain it in the prolonged leaps to which it is adapted
Keystone species deserve protection because these
are capable of surviving in harsh environmental conditions
indicate presence of certain minerals in the soil
have become rare due to overexploitation
play an important role in supporting other species.
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