Sawaal

 Biology Questions

Popular Latest Rated
Q:

Cellulose is a

A) Mineral B) Protein
C) Fat D) Carbohydrate
 
Answer & Explanation Answer: D) Carbohydrate

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

15 5303
Q:

Most bacteria reproduce by

A) budding B) binary fission
C) fragmentation D) mitosis
 
Answer & Explanation Answer: B) binary fission

Explanation:

Most bacteria is reproduce by binary fission.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE
Job Role: Analyst

4 5180
Q:

In plant body, the water and minerals are transported by _______

A) Bast B) Collenchyma
C) parenchyma D) Xylum
 
Answer & Explanation Answer: D) Xylum

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

20 5054
Q:

Lamarck's theory of inheritance of acquired characters was challenged by 

A) August Weismann B) Hugo de Vries
C) Herbert Spencer D) Carl Linnaeus
 
Answer & Explanation Answer: C) Herbert Spencer

Explanation:

August Weismann cut off the tails of mice for 21 successive generations and still they produced generation after generation of only tailed young ones. So he concluded that acquired characters are not inherited.

Report Error

View Answer Report Error Discuss

Filed Under: Biology

7 5047
Q:

"Pellagra" is caused due to the deficiency of

A) Niacin B) Riboflavin
C) Thiamine D) Pyridoxine
 
Answer & Explanation Answer: A) Niacin

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

14 5047
Q:

Which among the following is a Vitamin?

A) Citric acid B) Follic acid
C) Glutonic acid D) none
 
Answer & Explanation Answer: B) Follic acid

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology

9 5044
Q:

Amarbel is an example of

A) parasite B) host
C) autotroph D) saprotroph
 
Answer & Explanation Answer: A) parasite

Explanation:

Amarbel is an example of parasite.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

8 5035
Q:

A polygenic trait is controlled by 3 genes A, B and C. In a cross AaBbCc x AaBbCc, the phenotypic ratio of the offsprings was observed as 1 : 6 : m : 20 : m : 6 : 1. What is the value of m?

A) 10 B) 15
C) 18 D) 24
 
Answer & Explanation Answer: B) 15

Explanation:

Here crossing is AaBbCc x AaBbCc

As it is trihybrid cross,

we know, Number of zygotes formed = 4n, where n = 3

43 = 64

Given ratio of offsprings = 1 : 6 : m : 20 : m : 6 : 1

Now,  1 + 6 + m + 20 + m + 6 + 1 = 64

34 + 2m = 64

2m = 30

=> m = 15.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

2 5026