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Test: Botany Mock Test - 2

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45 Questions MCQ Test NEET Mock Test Series | Test: Botany Mock Test - 2

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Test: Botany Mock Test - 2 - Question 1

Cellular structure which always disappears during mitosis and meiosis is

A.
Plastids
B.
Nucleolus and nuclear envelope
C.
Plasma membrane
D.
None of the above

Test: Botany Mock Test - 2 - Question 2

During which phase of meiosis homologous chromosomes separate ?

A.
metaphase-I
B.
anaphase-I
C.
prophase-II
D.
telophase-II

Test: Botany Mock Test - 2 - Question 3

In pachytene stage of meiosis, the chromosomes appear

A.
four stranded
B.
three stranded
C.
double stranded
D.
single stranded

Test: Botany Mock Test - 2 - Question 4

A drug from the root of the following plant cures the mental disorders:

A.
Nepenthes
B.
Zingber
C.
Marigold
D.
Rauwolfia

Test: Botany Mock Test - 2 - Question 5

One of the following is a fibre as well as an oil yielding plant

A.
Cocos nucifera
B.
Linum usitatissimum
C.
Gossypium herbaceum
D.
All of these

Test: Botany Mock Test - 2 - Question 6

Tobacco leaves contain

A.
aspirin
B.
nicotine
C.
colchicine
D.
capsicin

Test: Botany Mock Test - 2 - Question 7

Which of the following is a fungicide?

A.
2,4,5-T
B.
rotenone
C.
paraquat
D.
Bordeaux mixture

Test: Botany Mock Test - 2 - Question 8

Conversion of organic nitrogenous compounds into ammonium compounds is called

A.
Nitrification
B.
Denitrication
C.
Ammonification
D.
Denaturation

Test: Botany Mock Test - 2 - Question 9

Broad-leaved Oaks found in

A.
Tropical evergreen forest
B.
Temperate deciduous forest
C.
North coniferous forest
D.
Tropical deciduous forest

Test: Botany Mock Test - 2 - Question 10

Ecotone is characterized by

A.
forest ecosytem
B.
transition zone between two vegetation
C.
terrestrial ecosystem
D.
zone of transition between water and land

Test: Botany Mock Test - 2 - Question 11

Tetradynamous condition is characteristic of family

A.
Papilionaceae/Pea
B.
Cruciferae/Mustard
C.
Solanaceae/Tomato
D.
Malvaceae/Cotton

Test: Botany Mock Test - 2 - Question 12

A nonsense/termination codon is

A.
UUU
B.
GCG
C.
UAG/UAA
D.
CCC

Test: Botany Mock Test - 2 - Question 13

Smallest segment of DNA capable of undergoing crossing over and recombination is

A.
Muton
B.
Cistron
C.
Recon
D.
Intron

Detailed Solution for Test: Botany Mock Test - 2 - Question 13 Recon is the unit of gene capable of crossing over or recombination .so option c is correct. muton is the unit of gene that undergoes mutation. cistron is the main unit of gene that is responsible for inheritance of traits and last introns are non codding sequence of dna.

Test: Botany Mock Test - 2 - Question 14

Khorana et al synthesised RNA with copolymer of UGUGUGUGUG... It produced a peptide with alternate cysteine and valine. The codons for the two are

A.
UGU and GUG
B.
UUG and GGU
C.
GUG and UGU
D.
UGG and GUU

Test: Botany Mock Test - 2 - Question 15

The winged pollen grains of Pinus sp. are produced in-

A.
Pollen chamber
B.
Tapetum
C.
Anther
D.
Microsporangium

Test: Botany Mock Test - 2 - Question 16

Ratio 1:1:1:1 is obtained from a cross of

A.
RRYY X rryy
B.
RRYy X rrYy
C.
RrYY X Rryy
D.
RrYy X rryy

Test: Botany Mock Test - 2 - Question 17

A child of blood group O cannot have parents of blood groups

A.
AB and AB/O
B.
A and B
C.
B and B
D.
O and O

Test: Botany Mock Test - 2 - Question 18

When the two genetic loci produce identical phenotypes in cis and trans position, they are considered to be

A.
pseudoalleles
B.
different genes
C.
multiple alleles
D.
the parts of same gene

Detailed Solution for Test: Botany Mock Test - 2 - Question 18

The cis-trans complementation test is done to determine if two mutations are allelic or nonallelic by constructing a heterozygote. Pseudoalleles are the genes that functionally behave as allelic pairs but structurally they are different genes present on two different genetic loci, not allelic pairs. Therefore, they behave as alleles in cis-trans test and produce identical phenotypes. Multiple alleles refer to the presence of more than two alleles of a gene which occupy the same genetic locus. The parts of the same gene occupy the same genetic locus and different genes occupy different genetic loci but do not produce an identical phenotype in cis-trans test

Test: Botany Mock Test - 2 - Question 19

The ATP production in photosynthesis, is called

A.
phototropism
B.
phosphorylation
C.
photooxidation
D.
photophosphorylation

Test: Botany Mock Test - 2 - Question 20

Which one is group of micro-elements?

A.
Mn, Cu, Ca
B.
Na, K, B
C.
Na, Ni, Cl
D.
Cu, Mo, Zn

Test: Botany Mock Test - 2 - Question 21

An essential process connected with photosynthesis is

A.
Photolysis of water
B.
Synthesis of glucose
C.
Breakdown of glucose
D.
Photophosphorylation

Test: Botany Mock Test - 2 - Question 22

Conversion of ATP to ADP produces

A.
Electricity
B.
Energy
C.
Hormones
D.
Enzymes

Test: Botany Mock Test - 2 - Question 23

Which of the following is least effective in photosynthesis

A.
Sunlight
B.
Red light
C.
Blue light
D.
Green light

Test: Botany Mock Test - 2 - Question 24

The term species was coined by

A.
Eicher
B.
A.Meyer
C.
John Ray
D.
Linnaeus

Test: Botany Mock Test - 2 - Question 25

An animal with same generic, specific and sub-specific name is

A.
rat
B.
man
C.
gorilla
D.
elephant

Test: Botany Mock Test - 2 - Question 26

If the tip of the seedling is cut off, growth as well as bending cease because it hampers

A.
Respiration
B.
Photosynthesis
C.
Perception oflight stimulus
D.
Transpiration

Test: Botany Mock Test - 2 - Question 27

Antherozoids are attracted towards archegonia in a fern plant. The phenomenon is

A.
Nyctinasty
B.
Chemonasty
C.
Thigmonasty
D.
Seismonasty

Test: Botany Mock Test - 2 - Question 28

2 : 4-D causes

A.
Delay in senescence
B.
Bolting
C.
Increase in branches
D.
Increased growth of all parts

Test: Botany Mock Test - 2 - Question 29

Which one of the following substances plays an important role in biochemical defence of host plants?

A.
Mycotoxin
B.
Phytoalexin
C.
Pathotoxin
D.
Vivotoxin

Test: Botany Mock Test - 2 - Question 30

In which one of the following pathogens do the cells of promycelium after the germination of teleutospore produce infection hyphae instead of basidiospores?

A.
Ustilago scitaminae
B.
Tilletia foetida
C.
Tilletia tritici
D.
Ustilago tritici

Test: Botany Mock Test - 2 - Question 31

Basic difference between vessel and tracheid is in

A.
Types of pits
B.
Thickness and lignification
C.
Perforations of end walls
D.
Function

Detailed Solution for Test: Botany Mock Test - 2 - Question 31 Ya correct option is c because vessels have perforation at end plates which make them tube like long structure.

Test: Botany Mock Test - 2 - Question 32

Ozone hole is caused by

A.
Acetylene
B.
Ethylene
C.
Chlorofluorocarbons
D.
Methane

Test: Botany Mock Test - 2 - Question 33

Planting of several rows of coniferous trees, along the highways, checks

A.
heat pollution
B.
thermal pollution
C.
noise pollution
D.
none of these

Test: Botany Mock Test - 2 - Question 34

An orthotropous ovule is one, in which micropyle and chalaza are

A.
at right angles to funicle
B.
parallel to the funicle
C.
in straight line of funicle
D.
parallel along with ovule

Test: Botany Mock Test - 2 - Question 35

A pome fruit is said to be false because

A.
pericarp is inconspicuous
B.
its endocarp is cartilaginous
C.
it is derived from superior ovary
D.
it is present in fleshy edible thalamus

Test: Botany Mock Test - 2 - Question 36

In nature, allogamy is met with in

A.
Unisexual flowers only
B.
Neuter flowers only
C.
Underground flowers only
D.
None of the above

Test: Botany Mock Test - 2 - Question 37

In mitochondria, ATP synthesis occurs

A.
At the outer membrane
B.
At the cristae
C.
In the matrix
D.
In the intra-cristal space

Detailed Solution for Test: Botany Mock Test - 2 - Question 37 Head of oxysomes or f1 are concerned with oxidative phosphorylation(formation of ATP by energy of oxidation) oxysomes are present at the inner membrane..inner membrane is folded into a no. of finger like cristae. Ultimately ATP synthesis occurs at cristae.

Test: Botany Mock Test - 2 - Question 38

Mitochondrial matrix has enzymes of

A.
Krebs cycle
B.
TCA cycle and electron transport
C.
Glycolysis and TCA cycle
D.
Both B and C

Detailed Solution for Test: Botany Mock Test - 2 - Question 38 Krebs cycle enzymes are proteins soluble enzyme which take place in mitochondrial matrix . becoz it does not require direct oxygen , it can take only place where oxygen is present.

Test: Botany Mock Test - 2 - Question 39

Which one is absent in erythrocytes ?

A.
Krebs cycle
B.
Enzymes
C.
Biomembrane
D.
Hyaloplasm

Test: Botany Mock Test - 2 - Question 40

Climbing roots are present in

A.
Loranthus
B.
Curcuma amada
C.
Rose
D.
Piper betle

Test: Botany Mock Test - 2 - Question 41

Vegetative reproduction of Agave occurs through

A.
Rhizome
B.
Stolon
C.
Bulbils
D.
Sucker

Test: Botany Mock Test - 2 - Question 42

Linnaeus classification of flowering plants is based on -

A.
Cytology
B.
Morphology
C.
Ecology
D.
Embryology

Test: Botany Mock Test - 2 - Question 43

With rise in turgidity,Wall pressure will

A.
Decrease
B.
Increase
C.
Fluctuate
D.
Remain unchanged

Test: Botany Mock Test - 2 - Question 44

In root hair, water enters due to

A.
Diffusion
B.
W.P.
C.
T.P.
D.
O.P.

Detailed Solution for Test: Botany Mock Test - 2 - Question 44 Yes u all are correct but diffusion is also correct answer but if mention special(effective) process then more correct answer is O.P.

Test: Botany Mock Test - 2 - Question 45

Cells absorb water through

A.
Osmosis only
B.
Imbibition only
C.
Both osmosis and imbibition
D.
None of the above

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Test: Botany Mock Test - 2

45 Questions MCQ Test NEET Mock Test Series | Test: Botany Mock Test - 2

Cellular structure which always disappears during mitosis and meiosis is

Plastids

Nucleolus and nuclear envelope

Plasma membrane

None of the above

During which phase of meiosis homologous chromosomes separate ?

metaphase-I

anaphase-I

prophase-II

telophase-II

In pachytene stage of meiosis, the chromosomes appear

four stranded

three stranded

double stranded

single stranded

Nepenthes

Zingber

Marigold

Rauwolfia

Cocos nucifera

Linum usitatissimum

Gossypium herbaceum

All of these

aspirin

nicotine

colchicine

capsicin

2,4,5-T

rotenone

paraquat

Bordeaux mixture

Nitrification

Denitrication

Ammonification

Denaturation

Tropical evergreen forest

Temperate deciduous forest

North coniferous forest

Tropical deciduous forest

forest ecosytem

transition zone between two vegetation

terrestrial ecosystem

zone of transition between water and land

Papilionaceae/Pea

Cruciferae/Mustard

Solanaceae/Tomato

Malvaceae/Cotton

UUU

GCG

UAG/UAA

CCC

Muton

Cistron

Recon

Intron

UGU and GUG

UUG and GGU

GUG and UGU

UGG and GUU

Pollen chamber

Tapetum

Anther

Microsporangium

RRYY X rryy

RRYy X rrYy

RrYY X Rryy

RrYy X rryy

AB and AB/O

A and B

B and B

O and O

phototropism

phosphorylation

photooxidation

photophosphorylation

Mn, Cu, Ca

Na, K, B

Na, Ni, Cl