NEET UG Botany MCQ-87

Question No:1

Tonoplasm is made up of
(I) H20
(II) Metabolic bye products
(III) Secretory substances
(IV) Excretory materials

(A) I only
(B) I, IV only
(C) I, II, IV only
(D) I, II, III, IV

Question No:2

Algae with multinucleate, haploid condition is
(A) Mucor
(B) Vaucheria
(C) Spirogyra
(D) Rhizopus

(A) A, B
(B) B, C
(C) B
(D) C, D

Question No:3

Structural, functional and hereditary unit of all living organisms is

(A) Nucleus
(B) Protoplasm
(C) Cell
(D) Gene

Question No:4

Single, circular, naked, coiled DNA molecule of a prokaryote represents

(A) Nucleoid
(B) Chromosome
(C) Heterokaryon
(D) Plasmid

Question No:5

The study of cells is evolved into a branch of science with the

(A) Discovery of a cells by Robert Hooke
(B) Publication of micrographia
(C) Invention of microscope by Zacharias Jannsen
(D) Discovery of bacteria by Leeuwenhoek

Question No:6

The scope of cell theory was extended by

(A) Schleiden & Schwann
(B) R. Virchow
(C) Robert Hooke
(D) Corti

Question No:7

Living cells having a distinct cell wall were first discovered by Leeuwenhoek are

(A) Bacteria
(B) Cork cells
(C) Blue green algae
(D) Mesophyll cells

Question No:8

Middle lamellum is chemically rich in

(A) Suberin
(B) Pectin
(C) Chitin
(D) Lignin

Question No:9

Cell plate which transforms into middle lamellum is secreted by

(A) Plasma membrane
(B) Golgi complex
(C) ER
(D) Phragmoplast

Question No:10

Thin areas in the primary wall are called

(A) Pits
(B) Primary pit fields
(C) Plasmodesmata
(D) Torus

Question No:11

Frame work of plant cell wall is formed by

(A) Cellulose microfibrils
(B) Pectin
(C) Mucopeptides
(D) Cisternae of golgi complex

Question No:12

Thickness of the cell wall is increased by a process called

(A) Intussuception
(B) Apposition
(C) Gelatinization
(D) Precipitation

Question No:13

Increase of the following results due to intussusception is

(A) Surf ace area
(B) Thickness
(C) Permeability
(D) Flexibility

Question No:14

Highly rigid cell wall in the following is

(A) Suberised wall
(B) Lignified wall
(C) Cutinised wall
(D) Primary cellwall

Question No:15

The structure that acts as intercellular cementing substance and binds adjacent cells together is

(A) Desomosome
(B) Primary cellwall
(C) Middle lamellum
(D) Secondary cellwall

Question No:16

The cell wall is not involved in

(A) Absorption
(B) Secretion
(C) Translocation
(D) Osmoregulation

Question No:17

Which of the following is a wrong statement

(A) Pit cavity is uniformly wide in a simple pit
(B) The thick middle portion of middle lamellum crossing the borderd pits is called torus
(C) The diameter of the pit chamber gradually decreases towards Lumen of the cell in simple pit.
(D) Secondary wall is absent in meristematic cells.

Question No:18

Regarding simple pits, the true statement is

(A) Secondary wall arches over the pit chamber
(B) Diameter of pit chamber is uniform throughout
(C) Diameter of pit aperture is bigger than that of pit cavity
(D) They are formed over the primary pit field only

Question No:19

Find out the incorrect statement

(A) Growth by opposition is particularly obvious in secondary walls
(B) Thin areas in primary wall are called primary pit fields
(C) Pit membrane of bordered pit pair has torus in the centre
(D) Deposition of secondary wall keeps pace with cell enlargement

Question No:20

Phragmoplast is derived from

(A) Spindle apparatus
(B) Spindle fragments
(C) Cell plate
(D) Middle lamellum