NEET UG Botany MCQ-21

Question No:1

Rhizopus is commonly known as dung mould

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false.
(D) Both (A) are (R) wrong.

Question No:2

(A):Lichens are autotrophic.

(R): Lichens are well known combination of an alga and fungus.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false.
(D) Both (A) are (R) wrong.

Question No:3

(A): Club fungi are the most advanced of all the fungal classes.

(R): Ascomycota is also called as club fungi.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false.
(D) Both (A) are (R) wrong.

Question No:4

(A):Reproduction in fairy rings occurs by means of spores.

(R): Life cycle of mushroom contains single type of mycelia.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false.
(D) Both (A) are (R) wrong.

Question No:5

(A):In diatoms, the cell walls are embedded with silica.

(R): Diatornaceous earth is used in polishing, filtration of oil and syrups.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false.
(D) Both (A) are (R) wrong.

Question No:6

Oxygenic photosynthesis occurs in

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

Question No:7

The bacterium (Clostridium botulinum) that causes botulism is

(A) an obligate aerobe
(B) a facultative anaerobe
(C) an obligate anaerobe
(D) a facultative aerobe

Question No:8

In bacteria, plasmid is

(A) extra chromosomal material
(B) main DNA
(C) non functional DNA
(D) repetitive gene.

Question No:9

Transformation experiment was first performed on which bacteria?

(A) E. coli
(B) Diplococcus pneumoniae
(C) Salmonella
(D) Pasteurella pestis

Question No:10

Photosynthetic bacteria have pigments in

(A) chromoplasts
(B) chromatophores
(C) leucoplasts
(D) chloroplasts.

Question No:11

The hereditary material present in the bacterium E.coli is

(A) single stranded DNA
(B) double stranded DNA
(C) DNA
(D) RNA

Question No:12

Which one of the following does not differ in E.coli and Chlamydomonas ?

(A) Cell membrane
(B) Ribosomes
(C) Chromosomal Organization
(D) Cell wall

Question No:13

Yeast is used in the production of

(A) Cheese and butter
(B) Citric acid and lactic acid
(C) Lipase and pectinase
(D) Bread and beer

Question No:14

Maximum nutritional diversity is found in the group

(A) Plantae
(B) Fungi
(C) Animalia
(D) Monera

Question No:15

Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?

(A) Multiplication by fragmentation
(B) Diplontic life cycle
(C) Members of kingdom Plantae
(D) Mode of Nutrition

Question No:16

Which statement is wrong for viruses?

(A) Antibiotics have no effect on them
(B) All are parasites
(C) All of them have helical symmetry
(D) They have ability to synthesize nucleic acids and proteins

Question No:17

The most abundant prokaryotes helpful to humans in marking curd from milk and in production of antibiotics are the ones categorized as

(A) Heterotrophic bacteria
(B) Cyanobacteria
(C) Archaebacteria
(D) Chemosynthetic autotrophs

Question No:18

Which one single organisms or the pair of organisms is correctly assigned to its or their named taxonomic group?

(A) Nostoc and Anabaena are examples of protista
(B) Paramecium and Plasmodium belong to the same kingdom as that of Penicillium
(C) Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan
(D) Yeast used in making bread and beer is a fungus

Question No:19

The cyanobacteria are also referred to as

(A) Blue green algae
(B) Protists
(C) Golden algae
(D) Slime moulds

Question No:20

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?

(A) Trichoderma
(B) Azotobacter
(C) Aspergillus
(D) Glomus