Biology Botany Online Practice test NEET UG dental/medical,jipmer,Aiims

NEET UG Botany-128

Question No:1

At what stage of the cell cycle are histone protein synthesized in a eukaryotic cell?

(A) During entire prophase
(B) During telophase
(C) During S – phase
(D) During G2 stage

Question No:2

Abnormal growth of the tumor in cancer is due to

(A) Abnormal mitotic division
(B) Accumulation of body fluid
(C) Abnormal meiotic division
(D) Metastasis

Question No:3

In meiosis division

(A) 1st reductional and 2nd equational
(B) 1st equational and 2nd reductional
(C) Both reductional
(D) Both equational

Question No:4

In Pteridium meiosis takes place at the time of

(A) Spore formation
(B) Organ formation in prothallus
(C) Spore germination
(D) Gamete formation

Question No:5

Which typical stage is known for DNA replication?

(A) Metaphase
(B) G1 – phase
(C) S – phase
(D) G2 – phase

Question No:6

The term “meiosis” was given by

(A) Johansen
(B) Knoll and Ruska
(C) A Flemming
(D) Farmer and Moore

Question No:7

When paternal and maternal chromosomes change their material with each other in cell division this event is called

(A) Synapsis
(B) Crossing over
(C) Bivalent – forming
(D) Dyad – forming

Question No:8

Mitotic spindle is mainly composed of which proteins?

(A) Act in
(B) Myosin
(C) Actomyosin
(D) Myoglobin

Question No:9

Cleavage is a unique form of mitotic cell division in that

(A) The plasma membranes of daughter cells do not separate
(B) No spindle develops to guide the cells
(C) There is no growth of cells
(D) The nucleus does not participate

Question No:10

An astral mitosis is the characteristic of:

(A) Lower animals
(B) Higher animals
(C) Higher plants
(D) All living organisms

Question No:11

Lamp brush chromosomes are seen in which typical stage.

(A) Mitotic anaphase
(B) Mitotic prophase
(C) Mitotic metaphase
(D) Meiotic prophase

Question No:12

In the life history of ferns, meiosis occurs at the time of

(A) Formation of spores
(B) Formation of antheridia and archegonia
(C) Formation of gametes
(D) Germination of spores

Question No:13

Find the mismatch of the following

(A) Epidermis – Cells are elongated and compactly arranged
(B) Cuticle – Protection
(C) Guard cell – Bean shaped in Grasses
(D) Guard cells – Chlorenchymatous

Question No:14

Epidermal hairs present on the stem are called as

(A) Ramenta
(B) Trichomes
(C) Indusium
(D) Scale leaves

Question No:15

Guard cells differ from other epidermal cells in having

(A) Chloroplasts
(B) Mitochondria
(C) Nucleus
(D) Lysosomes

Question No:16

Fundamental tissue system of primary stem and root consists of

(A) Stele, Cortex
(B) Cortex, Pith only
(C) Cortex, Mesophyll, Pericycle, and Pith
(D) Cortex, Pericycle, Pith, Medullary rays

Question No:17

Structure and function of a tissue is mainly dependent on

(A) Its cytoplasmic contents
(B) Its location in the plant body
(C) Its distribution in the plant kingdom
(D) Its origin

Question No:18

Choose the incorrect one

(A) Ground tissue may consists of simple tissues that lies in between epidermis and vascular bundles.
(B) In leaves the ground tissue consists of thin walled chloroplast containing cells called mesophyll.
(C) The vascular system consists of complex tissue the phloem and xylem
(D) Secondary growth/secondary tissues are formed in monocots due to the presence of cambium

Question No:19

The type of arrangement of xylem and phloem on alternate radii is described as

(A) Radial
(B) Diagonal
(C) Pyramidal
(D) Tangential

Question No:20

Match the following
List-I -List-II
A) Epidermis I) Bean shaped cells
B) Cuticle II) Stomatal aperture, guard cells and subsidiary cells
C) Stomatal apparatus III) Thick waxy layer
D) Guard cells IV) Outermost layer