NEETBotany MCQ-22

Question No:1

How many organisms in the list given below are autotrophs ? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Walfia

(A) Three
(B) Four
(C) Five
(D) Six

Question No:2

The cyanobacteria are also referred to as

(A) protists
(B) golden algae
(C) slime moulds
(D) blue green algae

Question No:3

Which one of the following is correctly matched?

(A) Onion – Bulb
(B) Ginger – Sucker
(C) Chlamydomonas – Conidia
(D) Yeast – Zoospores

Question No:4

Which one of the following organisms is not an eukaryote?

(A) Paramecium caudatum
(B) Escherichia coli
(C) Euglena viridis
(D) Amoeba proteus

Question No:5

Organisms called methanogens are most abundant in a

(A) sulphur rock
(B) cattle yard
(C) polluted stream
(D) hot spring

Question No:6

In prokaryotes, genetic recombination can occur during

(A) transduction
(B) transformation
(C) conjugation
(D) all of these

Question No:7

Sexual reproduction in which DNA of bacteria is transferred to another by the help of bacteriophage is

(A) transformation
(B) transduction
(C) transcription
(D) conjugation.

Question No:8

The major component of bacterial cell wall is a polymer called

(A) chitin
(B) xylan
(C) cellulose
(D) peptidoglycan

Question No:9

Which of the following terms is not concerned with genetic recombination in bacteria?

(A) transformation
(B) transduction
(C) translation
(D) conjugation

Question No:10

Streptomycin is obtained from

(A) Streptomyces griseus
(B) S. aureofaciens
(C) S. venezuelae
(D) S. ramosus

Question No:11

Bacteria are considered plants because they

(A) are green in colour
(B) have rigid cell wall
(C) have chlorophyll
(D) have stomata

Question No:12

A bacterium divides after every 35 minutes. If a culture containing 103cells per ml is grown, then cell concentration per ml after 175 minutes will be

(A) 175 x 105
(B) 125 x 10 5
(C) 48 x 10
(D) 32 x 105

Question No:13

The thermal bacteria survive in

(A) hot sulphur spring at 70°C
(B) hot water at 100°C
(C) both (a) and (b)
(D) none of these

Question No:14

For reproduction endospores are formed in the following genera

(A) Bacillus and Clostridium
(B) Mucor and Bacillus
(C) Monococcus and Clostridium
(D) Saccharomyces and Clostridium

Question No:15

Bacterial plasmid contain

(A) RNA and protein
(D) none of these

Question No:16

Streptococcus is used for

(A) making bread
(B) alcohol production
(C) vaccine formation
(D) cheese formation

Question No:17

Which of the following bacterium is associated with the roots of legumes?

(A) Nostoc
(B) Rhizobium
(C) Clostridium
(D) Spirogyra

Question No:18

Which of the following is bacterial disease?

(A) tuberculosis
(B) rabies
(C) yellow fever
(D) measles

Question No:19

Mesosome in a bacterial cell is

(A) plasmid
(B) connection between two cells
(C) plasmamembrane infolded for respiration
(D) none of the above

Question No:20

Oxygenie photosynthesis occurs in

(A) Oscillatoria
(B) Rhodospirillum
(C) Chlorobium
(D) Chromatium