NEET UG Botany MCQ-90

Question No:1

Organeiles involved in the protection of cell from microbes and effect of H2O2 respectively are

(A) Lysosomes and glyoxysomes
(B) Peroxysomes and glyoxysomes
(C) ER and golgi complex
(D) Lysosomes and peroxysomes

Question No:2

The protein necessary for the organization of ribosomal subunits are synthesized by

(A) Golgi complex
(B) Peroxysomes
(C) Ribosomes
(D) Smooth endoplasmic reticulum

Question No:3

Chromosome theory of inheritance was proposed by

(A) Schleiden and Schawann
(B) Beadle and Tatum
(C) Sutton and Boveri
(D) Nageli and Hofmeister

Question No:4

Chromsomes are the

(A) Physicasl basis of heredity
(B) Physical basis of life
(C) Chemical basis of heredity
(D) Dynamic centres of the cell

Question No:5

Diagramatic representation of karyotype is

(A) Biome
(B) Idiogram
(C) Genome
(D) Heiroglyphics

Question No:6

Ends of chromosomes exhibiting polarity and offering stability are known as

(A) Knobs
(B) Chromomeres
(C) Chromomeres
(D) Telomeres

Question No:7

Size of chromosome can be measured easily in

(A) Metaphase
(B) S – phase
(C) Telophase
(D) Interphase

Question No:8

V- shaped anaphasic chromosome is

(A) Metacentric
(B) Sub – metacentric
(C) Acrocentric
(D) Telocentric

Question No:9

Plant showing highest number of chromosomes belongs to

(A) Fungus
(B) Algae
(C) Pteridophy te
(D) Angiosperm

Question No:10

Chracteristic diploid chromosome complement of an organism is called

(A) Idiogram
(B) Linkage group
(C) Karyotype
(D) None

Question No:11

The haploid chromosome number in sugarcane is how many times greater than diploid number of maize?

(A) One
(B) Three
(C) Two
(D) Six

Question No:12

Number of genomes in a tetraploid plant having 24 chromosomes is

(A) 6
(B) 12
(C) 24
(D) 4

Question No:13

A plant having two genomes and four chromosomes is

(A) Ophioglossum
(B) Haplopappus
(C) Pisum
(D) Allium

Question No:14

The term nuclesome was coined by

(A) Oudet
(B) Nageli
(C) Kornberg
(D) Fontana

Question No:15

Histone octamer acts as the core of the nucleosome. The type of histone which is not a component of octamer ?

(A) H2A
(B) H2B
(C) H4
(D) H1

Question No:16

Number of H1 proteins associated with a 10 nucleosomes in chromatin fibre is

(A) 9
(B) 10
(C) 11
(D) 12

Question No:17

A chromosome with centromeres and arms in 1 : 1 ratio is

(A) Metacentric
(B) Sub metacentric
(C) Acrocentric
(D) Telocentric

Question No:18

A telocentric chromosome of metaphase consists of

(A) One centromere, one arm, two chromatids
(B) One centromere, two arms, two chromatids
(C) One centromere, one arm, one chromatid
(D) One centromere, two arms, one chormatid

Question No:19

The ratio between Histone ‘2’ and Histone T associated with eukaryotic DNA, respectively?

(A) 2:1
(B) 1 : 2
(C) 1 : 4
(D) 4 : 1

Question No:20

Chromosomes were first observed by Hofmeister in

(A) Tridax
(B) Pisum
(C) Tradescantia
(D) Oryza