Biology Botany Online MCQ NEET UG Medical/Dental,Jipmer,Aiims

NEET UG Botany MCQ-98

Question No:1

Centrioles (microcentrosome or cell centre) is

(A) Microtubular and membraneless
(B) Absent in Amoeba, red algae, blue-green algae, conifers and angiosperm and made up of a peripheral triplet microtubular
(C) Basically locomotary and their role in spindle formation is secondary
(D) All of the above

Question No:2

A mutation in bacterial resutls in non-formation of mesosomes. The expected result will be

(A) Only cell division will occur
(B) Only replication of DNA will occur
(C) Only karyokinesis will occur
(D) All of the above

Question No:3

A structure known as peroxisomes is associated with

(A) Photosynthesis
(B) Respiration
(C) Photorespiration
(D) Photo phosphorylation

Question No:4

The diagramatic representation of a chromosome is known as

(A) Idiotype
(B) Karyotype
(C) Homotype
(D) Holotype

Question No:5

Thread like structure that are composed of the nuclear DNA of eukaryotic cells and the carrier of genetic information. These structures were known as chromosomes. The term chromosomes was given by

(A) Waldeyer
(B) Balbiani
(C) Purkinje
(D) Sutton

Question No:6

In SAT chromosome, SAT [satellite] is terminal part of chromosome beyond secondary constriction. It contains

(C) Repetitive DNA
(D) None of these

Question No:7

Material exchange through nuclearpore is facilitated by

(A) Lamina propriya
(B) Lipid layer
(C) Nucleoplasm
(D) Nucleolus

Question No:8

The term nucleosome was given by outdet, Oluis and Olius called these particle as “nu” particles which histone is absent in nucleosome

(A) H 1
(B) H2
(C) H3A
(D) H4

Question No:9

The base of oxysome is also called as

(A) F5 particle
(B) F6 particle
(C) F 1particle
(D) F0particle

Question No:10

Which of the following organ has single membrane?

(A) Nucleus
(B) Cell wall
(C) Nucleolus
(D) None of these

Question No:11

Centromere is a part of:

(A) Ribosomes
(B) Mitochondria
(C) Chromosomes
(D) Endoplasmic reticulum

Question No:12

The desmosomes are concerned with

(A) Cytolysis
(B) Cellular excretion
(C) Cell division
(D) Cell adherence

Question No:13

T-Schwann and M.Schleiden were

(A) Dutch biologists
(B) Austrain biologists
(C) German biologists
(D) English biologists

Question No:14

Which of the following is responsible for the mechanical support, protein synthesis and enzyme transport?

(A) Endoplasmic reticulum
(B) Mitochondria
(C) Cell membrane
(D) Dictyosome

Question No:15

The protists have

(A) Membrane bound nucleoproteins lying embedded in the cytoplasm
(B) Gene containing nucleoproteins condensed together in loss mass
(C) Nucleoproteins in direct contact with the rest of the cell substance
(D) Only free nucleic acid aggregates

Question No:16

Bacteria do not possess:

(A) Capsule
(B) Ribosome
(C) Mitochondria
(D) Plasmamembrane

Question No:17

The shape of chromosome is determined by

(A) Centrosome
(B) Centromere
(C) Chromomere
(D) Telomere

Question No:18

Biologically most resistant plant material is

(A) Lignin
(B) Cutin
(C) Suberin
(D) Sporopollenin

Question No:19

Which of the following techniques other than microscopy is used for the study of cell?

(A) Plasmolysis
(B) Maceration
(C) Chromatography
(D) Auto – Radiography

Question No:20

The most abundant elements in protoplasm are

(A) Carbon, sodium, and hydrogen
(B) Carbon, hydrogen and oxygen
(C) Nitrogen, carbon and oxygen
(D) Carbon, phosphorus and oxygen