Tamil Nadu (English Medium) Plus 1 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
Which of the following represent a test cross ?

(A) Ww × WW	(B) Ww × Ww
(C) Ww × ww	(D) WW × WW

Question-2 The recessive character in Mendel's pea plant was

(A) yellow pod	(B)round seed
(C)green pod	(D)axial flower

Question-3 The organisms phenotypically similar but genotypically different are said to be

(A) multizygous	(B)homozygous
(C)heterozygous	(D)monozygous

Question-4 How many pairs of contrasting characters in pea plant are chosen by Mendel?

(A) 2	(B)3
(C)4	(D)7

Question-5 If hybrid red flowered plants of pea are crossed back to pure red flowered parent plant, the progeny will show.

(A) all red flowered plants	(B)all white flowered plants
(C)3 red and 1 white flowered plants	(D)50% red and 50% white flowered plants

Question-6 The polygenic genes show different

(A) genotypes	(B)phenotypes
(C)karyotypes	(D)none of these

Question-7 The transmission of certain genetic information from parents to offsprings through cytoplasm is termed as

(A) transformation	(B)transduction
(C)transversion	(D)cytoplasmic inheritance

Question-8
In which one of the following , complementary gene interaction ratio of 9 : 7 is observed ?

(A) Fruit shape in Shepherd's purse	(B) Coat colour in mouse
(C) Feather colour in fowl	(D) Flower colour in pea

Question-9
The gene, which controls many characters is called

(A) codominant gene	(B) poly gene
(C) pleiotropic gene	(D) multiple gene

Question-10 The genes controlling the seven pea characters studied by Mendel are now known to be located on how many different chromosomes?

(A) six	(B)five
(C)four	(D)seven

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Plus 1 Biology Science

Tamil Nadu (English Medium)

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