EASY
Earn 100

Bacteria involve  (exchange of DNA/fusion of gametes) during the sexual reproduction.

50% studentsanswered this correctly

Important Questions on Living World

EASY

Find out the correct combination based on the methods of genetic material exchange which occur in bacteria.

A)  F-plasmid passes from donor cell to recipient cell  Retaining of the copy of genetic material by the donor
B) Uptake of DNA fragments from the surrounding environment Acquiring new characters by the recipient cell
C) Production of genetically identical cells Transformation
D) Transfer of genetic material through bacteriophages Transduction
EASY
Archaebacteria differs from eubacteria in:
EASY

Plasmids have the following characters.

i) They contain fewer genes than the bacterial chromosome.

ii) They have single stranded DNA

iii) They can be used as vectors

iv) They contain linear form of DNA

v) Plasmids confer protection to drugs

The correct combination is

MEDIUM
What is conjugation? Who discovered it and in which organism?
EASY
The structures that help some bacteria to attach to rocks and/or host tissue are:
MEDIUM

Statement (S): In ciliates, conjugation restores the vigour and vitality which are lost due to chromosomal imbalance in the macronuclei due to repeated amitotic divisions.

Reason (R): Conjugation is temporary union of senile ciliates belonging to same mating types. It often prevents exchange of nuclear material.

EASY
Who discovered the transfer of genetic material from one bacterium to another bacterium through pilus?
MEDIUM
What is transduction? Who discovered it and in which organism?
EASY
Which of the following components provides sticky character to the bacterial cell?
EASY
Which of the following are found in extreme saline conditions?
EASY
What is transformation? Who discovered it and in which organism?
MEDIUM
What is conjugation? Who discovered it and in which organism?
MEDIUM
Thiobacillus is a group of bacteria helpful in carrying out:
EASY
DNA replication in bacteria occurs
EASY
The true nucleus is absent in:
MEDIUM
Chains of bacteria are indicated by the prefix _____.
EASY
The process in which viruses are involved in sexual reproduction of bacteria is called
MEDIUM
In Mycoplasma (PPLO), the plasmalemma is rich in