NEET UG Botany MCQ-86

Question No:1

Nucleolus is absent in

(A) Bacteria
(B) Yeast
(C) Mammalian RBC
(D) (a) & (c)

Question No:2

Name the nucleic acid in nucleolar organizer which is involved in the synthesis of ribosomal RNA is

(A) m-DNA
(C) n-DNA
(D) r-DNA

Question No:3

Number of centromeres present in acentric chromosome

(A) 2
(B) 3
(C) 2
(D) 0

Question No:4

Anthocyanins impart the following colours

(A) Blue
(B) Pink
(C) Violet
(D) All the above

Question No:5

Number of chromosomes found in the pollengrain of maize is

(A) 20
(B) 10
(C) 30
(D) 40

Question No:6

Lampbrush chromosomes are special type of chromosomes found in

(A) Salivary gland cells of dipterans
(B) Gonadal cells of reptiles
(C) Amphibian oocytes
(D) Brain cells

Question No:7

Shape of prokaryotic chromosome is

(A) Rod shape
(B) Circular
(C) L shape
(D) Sac like

Question No:8

Balbiani rings are the structural feature of

(A) Lampbrush chromosomes
(B) Polytene chromosomes
(C) Allosomes
(D) Autosomes

Question No:9

Mixing of paternal and maternal chromosomes is called

(A) Apospory
(B) Fertilization
(C) Apogamy
(D) Apomixis

Question No:10

The size of the largest chromosome in Trilium

(A) 42 microns
(B) 22 microns
(C) 52 microns
(D) 30 microns

Question No:11

Cell lineage (or) cell inheritance theory was proposed by

(A) Schleiden
(B) Schwann
(C) Rudolf Virchow
(D) (a) & (b)

Question No:12

Major cell wall material present in the cell wall of fungal cells is

(A) Cellulose
(B) Suberin
(C) Chitin
(D) Cutin

Question No:13

Wall layer of a typical plant cell composed by cellulose and xylan is

(A) Primary cell wall
(B) Secondary cell wall
(C) Tertiary cell wall
(D) All the above

Question No:14

Cell wall was first observed by

(A) Robert Brown
(B) Robert Hooke
(C) Schleiden
(D) Robert Hill

Question No:15

The cell structure consisting of trimorphic protein components is

(A) Cell wall
(B) Glycocalyx
(C) Cell membrane
(D) Middle lamellum

Question No:16

Physical property of cytosol is

(A) Tyndall’s effect
(B) Brownian movement
(C) Irriability
(D) (a) & (b)

Question No:17

The phase reversel property of cytoplasmic matrix induces

(A) Osmosis
(B) Plasmolysis
(C) Cyclosis
(D) Deplasmolysis

Question No:18

The structural components of endoplasmic reticulum are

(A) Cisternae
(B) Tubules
(C) Vesicles
(D) All the above

Question No:19

Leucoplast does not contain
(A) Chlorophylls
(B) Carotene
(C) Xanthophylls
(D) Anthocyanin

(A) Except D
(B) AB only
(C) BC only

Question No:20

The two subunits of ribosomes get associated in the presence of the following ion

(A) Mg+2
(B) Ca+2
(C) Fe+2
(D) Fe+3