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A graph is given below exhibiting evolution of gametophyte of different plant groups at No. 1 to 6. Identify that number 1 representing which group of plant.

Image not present (

(1) Moss
(2) Pteridophyta
(3) Angiosperm
(4) Liverwort
African, Asian and european human beings have some permanent variations in some of the traits like skin colour, hair styles, shape of nose, thickness of lips etc. Africans and europeans show extremes in these traits whereas the Asians are of intermediate types, for example, the skin colour. Africans are black, europeans are white and Asians have brown skin.
On the basis of above traits the Asians, African and europeans are :-
(1) Three ecotypes of one species
(2) Three biotypes of one species
(3) Three ecads of some species
(4) One sibling species
If the molecular mass of an amino acid is 150 dalton the molecular mass of tripeptide will be :-
(1) 450 (2) 486 (3) 504 (4) 414
How many Universal (Main) element in the list given below present in protoplasm :-
Oxygen, Zinc, Calcium, Iodine, Copper, Cobalt, Sulfur, Hydrogen, Carbon, Manganese.
(1) 7 (2) 6 (3) 5 (4) 8
How many types of spindles presents in stage of cell division shown in above diagram :-
The Leydig cells as found in the human body are the secretory source of :-
(1) glucagon
(2) androgens
(3) progesterone
(4) intestinal mucus
Which one of the following does not differ in E.coli and Chlamydomonas ?
(1) Cell wall
(2) Cell membrane
(3) Ribosomes
(4) Chromosomal Organization

A Water borne disease is

small pox
Acid Rain is caused by the air pollutant--

carbon monooxide
carbon dioxide
sulphur dioxide
nitrogen oxide
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