[MCQ]Biology MCQs For WBCS Exam||SET 17

 

 Biology MCQs For WBCS Exam

WBCS BIOLOGY MCQ Q1. 

Which of the following is not heritable?

(a) Point mutation

(b) Chromosomal mutation

(c) Somatic mutation

(d) Gene mutation

Ans. (c)

WBCS BIOLOGY MCQ Q2. 

Which of the following is a mutagen?

(a) SO2

(b) CO2

(c) CO

(d) HNO2

Ans. (d)

WBCS BIOLOGY MCQ Q3. 

The plant that was made popular by “DE VRIES mutation theory”:

(a) Triticum vulgare

(b) Oenothera lamarkiana

(c) Pisum sativum

(d) Primula vulgaris

Ans. (b)

WBCS BIOLOGY MCQ Q4. 

Which of the following is an example of a point mutation?

(a) Thalassaemia

(b) Night blindness

(c) Sickle cell anaemia

(d) Down‟s syndrome

Ans. (c)

WBCS BIOLOGY MCQ Q5. 

Mutations used in agriculture are

(a) lethal and recessive

(b) artificially induced and recessive

(c) lethal and dominant

(d) none of the above

Ans. (b)

WBCS BIOLOGY MCQ Q6. 

Inheritance of total colour-blindness is

(a) X-linked

(b) XY-linked

(c) Y-linked

(d) none of these

Ans. (a)

WBCS BIOLOGY MCQ Q7. 

A man is hemophiliac. This indicates that he

(a) inherited the condition from his father

(b) is afraid of sight of blood

(c) inherited the condition from his mother

(d) is carrying parasite in his blood

Ans. (c)

WBCS BIOLOGY MCQ Q8. 

Genes located on Y-chromosome are

(a) mutant genes

(b) sex-linked genes

(c) autosomal genes

(d) holoandric genes

Ans. (d)

WBCS BIOLOGY MCQ Q9. 

“Barr body” is derived from

(a) autosomes in males

(b) autosomes in females

(c) X-chromosome in female

(d) X-chromosome in males

Ans. (c)

WBCS BIOLOGY MCQ Q10. 

Heterosis is

(a) hybrid incompatibility

(b) hybrid vigour

(c) structural hybridity

(d) hybrid sterility

Ans. (b)

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