Biology Botany Online MCQ Test NEET UG,AIIMS,JIPMER,Medical exam

NEET UG Botany MCQ-72

Question No:1

Clone is a group of individuals got through

(A) self – pollination
(B) cross – pollination
(C) vegetative propagation
(D) hybridisation

Question No:2

Girdling cannot be performed in sugarcane because its

(A) vascular bundles are scattered
(B) phloem is internal to xylem
(C) sugarcane plants are delicate
(D) inablility to bear injury

Question No:3

Layering is used for vegetative propagation of

(A) rose
(B) jasmine
(C) mango
(D) all of these

Question No:4

In some seeds, remnants of nucellus are also persistant. This residual, persistant nucellus is the

(A) Pericarp
(B) Perisperm
(C) Endosperm
(D) Mesosperm

Question No:5

The plant part which consists of two generations one within the other, is

(A) Germinated seed
(B) Embryo
(C) Unfertilized ovule (younger ovule)
(D) Seed

Question No:6

Match the following ovular structure with post fertilization structure and select the correct alternative
(A) Ovule—-(1) Endosperm
(B) Funiculus— (2) Aril
(C) Nucellus- (3) Seed
(D) Polar nuclei — (4) Perisperm

A B C D

(A) 2 3 4 1
(B) 2 3 1 4
(C) 3 2 4 1
(D) 3 2 1 4

Question No:7

A scion is grafted to a stock. The quality of fruits produced will be determined by the genotype of

(A) Scion
(B) Stock
(C) Both stock and scion
(D) neither scion nor stock

Question No:8

Somaclonal variation appears in

(A) Organisms produced through somatic hybridization
(B) Plants growing in highly polluted conditions
(C) Apomictic plants
(D) Tissue culture raised plants

Question No:9

(A) : Ginger has a prostrate growing rhizome
(R) : Shoot growth is not effected by gravity

(A) Both ( A ) and (R) are true and (R) is correct explanation of ( A )
(B) Both (A) and (R) are true but (R) is not correct explanation of (A)
(C) (A) is true but (R) is false
(D) (A) is false but (R) is true

Question No:10

Ploidy of ovum of angiosperms is

(A) haploid
(B) diploid
(C) triploid
(D) polyploid

Question No:11

Monocarpic plants flower

(A) Once
(B) Twice
(C) Many times
(D) Never

Question No:12

Haploid cultures can be obtained by culturing

(A) Pollen grains
(B) Embryo
(C) Shoot apex
(D) Root apex

Question No:13

The development of sporophyte from gametophytic tissue is called

(A) apogamy
(B) apospory
(C) amphimixis
(D) parthenogenesis

Question No:14

A plant cell has potential to develop into full plant. This property of the plant cell is called

(A) tissue culture
(B) totipotency
(C) pleuripotency
(D) gene cloning

Question No:15

Heaping of earth around base of stem in potato is meant for

(A) preventing exposures of roots
(B) providing extra support to delicate stem
(C) inducing development of more auxiliary shoots
(D) making more water available

Question No:16

The plant material, which is widely used in the preparation of culture medium, is

(A) Cycas revoluta
(B) Cocos nucifera
(C) Pinus longifolia
(D) Borassus flabellifer

Question No:17

The asexual production of seed is called

(A) apomixis
(B) advention
(C) fragmentation
(D) self – fertilization

Question No:18

Apomixis is development of new plant

(A) without fusion of gametes
(B) from fusion products of gametes
(C) from stem cuttings
(D) from root cuttings

Question No:19

Nucellus forms which of the following part of fruit ?

(A) Seed coat
(B) Perisperm
(C) Seed
(D) Raphe

Question No:20

If root of a flowering plant has 24 chromosomes, then its gamete has how many chromosomes

(A) 24
(B) 12
(C) 4
(D) 8