Biology Mcqs Test Preparation for ECAT & MCAT - Set 3

1)   Purple non-sulphur bacteria is an example of

a. Heterotrophic bacteria
b. Chemosynthetic bacteria
c. Photosynthetic bacteria
d. Saprotrophic bacteria
Answer  Explanation 

ANSWER: Photosynthetic bacteria

Explanation:
No explanation is available for this question!


2)   Those bacteria which are fully dependent upon their host for nutrition are called

a. Heterotrophic bacteria
b. Chemosynthetic bacteria
c. Saprophytic bacteria
d. Parasitic bacteria
Answer  Explanation 

ANSWER: Parasitic bacteria

Explanation:
No explanation is available for this question!


3)   Nitrifying bacteria are the examples of

a. Hetrotrophic bacteria
b. Chemosynthetic bacteria
c. Saprophytic bacteria
d. Parasitic bacteria
Answer  Explanation 

ANSWER: Chemosynthetic bacteria

Explanation:
No explanation is available for this question!


4)   E. coli and example of

a. Aerobic bacteria
b. Anaerobic bacteria
c. Facultative bacteria
d. Microaerophilic
Answer  Explanation 

ANSWER: Facultative bacteria

Explanation:
No explanation is available for this question!


5)   Spirochete is an example of

a. Aerobic bacteria
b. Anaerobic bacteria
c. Facultative bacteria
d. Microaerophilic
Answer  Explanation 

ANSWER: Anaerobic bacteria

Explanation:
No explanation is available for this question!


6)   Sex pili is formed in which of the following processes:

a. Binary fission
b. Mitosis
c. Sexual reproduction
d. Conjugation
Answer  Explanation 

ANSWER: Conjugation

Explanation:
No explanation is available for this question!


7)   Chemical substances used on living tissues that inhibit the growth of micro organism are called

a. Antiseptics
b. Disinfectants
c. Antibiotics
d. Vaccines
Answer  Explanation 

ANSWER: Antiseptics

Explanation:
No explanation is available for this question!


8)   Cyanobacteria have _____ cell wall

a. Gram +ve.
b. Gram - ve.
c. Acid fast
d. Cellulose rich
Answer  Explanation 

ANSWER: Gram - ve.

Explanation:
No explanation is available for this question!


9)   Cyanobacteria reproduce by:

a. Binary fission
b. Mitosis
c. Meiosis
d. Conjugation
Answer  Explanation 

ANSWER: Binary fission

Explanation:
No explanation is available for this question!


10)   Which of the following statement about plants is incorrect?

a. All are eukaryotes
b. They are multicellular.
c. Non-motile organisms
d. Are heterotrophes
Answer  Explanation 

ANSWER: Are heterotrophes

Explanation:
No explanation is available for this question!


11)   Bryophtes are called amphiabians of plant world because

a. Bryophytes like amphibian ancestors are one of the most primitive organisms in this world.
b. Bryophytes like amphibian live in damp shady places and close to water body.
c. Amphibians have close relation with bryophytes in their habitat.
d. All of these
Answer  Explanation 

ANSWER: Bryophytes like amphibian live in damp shady places and close to water body.

Explanation:
No explanation is available for this question!


12)   Hornwarts are included in sub-class

a. Anthoceropsida
b. Bryopsida
c. Hepaticopsida
d. Psilopsida
Answer  Explanation 

ANSWER: Anthoceropsida

Explanation:
No explanation is available for this question!


13)   Horsetails are included in class

a. Sphenopeida
b. Lycopsida
c. Psilopsida
d. Pteropsida
Answer  Explanation 

ANSWER: Sphenopeida

Explanation:
No explanation is available for this question!


14)   Antheridia and archegonia are born on _____ in bryophytes

a. Sporophyte
b. Gametophyte
c. Both of these
d. None of these
Answer  Explanation 

ANSWER: Gametophyte

Explanation:
No explanation is available for this question!


15)   In bryophytes fertilization takes place in

a. Antheridia
b. Archegonia
c. water
d. Ovule
Answer  Explanation 

ANSWER: Archegonia

Explanation:
No explanation is available for this question!


16)   Which of the following statement about alternation of generation in bryophytes is incorrect?

a. It involves alternation of morphologically different generations
b. Their gametophyte is independent while sporophyte depends upon gametophyte for nutrition.
c. Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization
d. Spore formation occurs through meiosis
Answer  Explanation 

ANSWER: Both the gametophyte and sporophytes are haploid generations thus can produce haploids gametes to continue the diploid number on fertilization

Explanation:
No explanation is available for this question!


17)   Antherozoids the male gamete in bryophytes are attracted towards Archegonium i.e. female sex organ by

a. Phototactic phenomenon
b. Chemotactic phenomenon
c. Geotropic phenomenon
d. Chemotropic movement
Answer  Explanation 

ANSWER: Chemotactic phenomenon

Explanation:
No explanation is available for this question!


18)   Which of the following of bryophytes are the simplest one?

a. Porella
b. Funaria
c. Anthocerus
d. Polytrichum
Answer  Explanation 

ANSWER: Porella

Explanation:
No explanation is available for this question!


19)   The zygote formed in liverworts is

a. Unicellular
b. Mulicellular
c. Multinucleate
d. None of these
Answer  Explanation 

ANSWER: Unicellular

Explanation:
No explanation is available for this question!


20)   Sporophyte is

a. Monoploid
b. Haploid
c. Diploid
d. Polyploidy
Answer  Explanation 

ANSWER: Diploid

Explanation:
No explanation is available for this question!


21)   Mosses are included in sub-division

a. Anthoceropsida
b. Hepaticopsida
c. Bryopsida
d. Lycopsida
Answer  Explanation 

ANSWER: Bryopsida

Explanation:
No explanation is available for this question!


22)   Ferns are included in

a. Ferns are included in
b. Lycopsida
c. Sphenopsida
d. Pteropsida
Answer  Explanation 

ANSWER: Pteropsida

Explanation:
No explanation is available for this question!


23)   The simplest of all bryophytes are

a. Thallophytes
b. Embryophytes
c. Mosses
d. Liverworts
Answer  Explanation 

ANSWER: Liverworts

Explanation:
No explanation is available for this question!


24)   Antheridiophore and archegoniophore are found in

a. Marchantia
b. Marchantia
c. Both of these
d. None of these
Answer  Explanation 

ANSWER: Both of these

Explanation:
No explanation is available for this question!


25)   Protonema is

a. Thallus like
b. Algae like
c. Fungus like
d. Plant like
Answer  Explanation 

ANSWER: Algae like

Explanation:
No explanation is available for this question!


26)   Of the following which one is most advanced ?

a. Anthoceropsida
b. Bryopsida
c. Hepaticopsida
d. None of these
Answer  Explanation 

ANSWER: Anthoceropsida

Explanation:
No explanation is available for this question!


27)   In Hornworts the band of meristematic tissue is found near

a. Foot
b. Gamete producing region
c. Spore producing region
d. At junction of a & b
Answer  Explanation 

ANSWER: At junction of a & b

Explanation:
No explanation is available for this question!


28)   The part of sporophyte which is called sporangium is

a. Capsule
b. Foot
c. Stalk
d. None of these
Answer  Explanation 

ANSWER: Capsule

Explanation:
No explanation is available for this question!


29)   The first cell of the sporophyte generation is

a. Oospore
b. Spore mother cell
c. Spore
d. Gamete
Answer  Explanation 

ANSWER: Oospore

Explanation:
No explanation is available for this question!


30)   Stem of Psilophyton an example of psilogsida is differentiated into an underground rhizome and an aerial part both of which are _____ branched

a. Isotomous
b. Dichotomously
c. Trichotomously
d. Multichotomously
Answer  Explanation 

ANSWER: Dichotomously

Explanation:
No explanation is available for this question!


31)   Which of the following group of tracheophyta has expanded or scale like leaves which are alwaysed arranges in whorls?

a. Psilopsida
b. Lycopsida
c. Sphenopsida
d. Prteropsida
Answer  Explanation 

ANSWER: Sphenopsida

Explanation:
No explanation is available for this question!


32)   Which of the following tracheophytes are leafless?

a. Psilopsida
b. Lycopsida
c. Sphenopsida
d. Prteropsida
Answer  Explanation 

ANSWER: Psilopsida

Explanation:
No explanation is available for this question!


33)   Sporangia of which of the following tracheopytes develop singly on the upper side of sporophylls which may or may not be arranged to form strobili.

a. Psilopsida
b. Lycopsida
c. Sphenopsida
d. Prteropsida
Answer  Explanation 

ANSWER: Lycopsida

Explanation:
No explanation is available for this question!


34)   Gametophyte of Psilopsida develops a symbiotic association with which of the following?

a. Algae
b. Bacteria
c. Protozoa
d. Fungus
Answer  Explanation 

ANSWER: Fungus

Explanation:
No explanation is available for this question!


35)   Which of the following is an example of the living member of Psilopsida?

a. Rhynia
b. Psilophyton
c. Psilotum
d. Cooksonia
Answer  Explanation 

ANSWER: Psilotum

Explanation:
No explanation is available for this question!


36)   In term of spore production Selaginella is characterized by

a. Homosporous
b. Hetrosporous
c. Both depending upon the conditions
d. None of these
Answer  Explanation 

ANSWER: Hetrosporous

Explanation:
No explanation is available for this question!


37)   Which of the following tracheophytes are also called arthrophytes?

a. Psilopsids
b. Lycopsids
c. Sphenopsids
d. Prteropsids
Answer  Explanation 

ANSWER: Sphenopsids

Explanation:
No explanation is available for this question!


38)   Equistem is an example of

a. Psilopsida
b. Lycopsida
c. Lycopsida
d. Prteropsida
Answer  Explanation 

ANSWER: Lycopsida

Explanation:
No explanation is available for this question!


39)   Today the land habitat is dominated by

a. Fungi
b. Gymnosperms
c. Angiosperms
d. Tracheophytes
Answer  Explanation 

ANSWER: Tracheophytes

Explanation:
No explanation is available for this question!


40)   Of the following which one is not the characteristic of the plants included in psilopsida?

a. Gametophyte is colourless
b. They have mycorrhizal association
c. Rhizoids bear Rhizome
d. Aerial branches have veinless outgrowths
Answer  Explanation 

ANSWER: Rhizoids bear Rhizome

Explanation:
No explanation is available for this question!


41)   Megaphylls are characteristic for

a. Ferns
b. Seed plants
c. Both of these
d. None of these
Answer  Explanation 

ANSWER: Both of these

Explanation:
No explanation is available for this question!


42)   The dichotomously branching system has shape similar to

a. U
b. R
c. Y
d. Fork
Answer  Explanation 

ANSWER: Y

Explanation:
No explanation is available for this question!


43)   The space between the overtopped dichotomous branches was occupies by a sheet of _____ cells during evolution of megaphyllas.

a. Sclerenchyma
b. Chlorenchyma
c. Parenchyma
d. Collenchyma
Answer  Explanation 

ANSWER: Chlorenchyma

Explanation:
No explanation is available for this question!


44)   Production of two types of spores is known as

a. Heterospory
b. Homospory
c. Heterogamy
d. Gamospory
Answer  Explanation 

ANSWER: Heterospory

Explanation:
No explanation is available for this question!


45)   Ground pries are also known as

a. Lycopods
b. Spike mosses
c. Both of these
d. None of these
Answer  Explanation 

ANSWER: Both of these

Explanation:
No explanation is available for this question!


46)   Which of the following plant group first formed true leaves?

a. Psilopsida
b. Lycopsida
c. Sphenopsida
d. Pteropsida
Answer  Explanation 

ANSWER: Lycopsida

Explanation:
No explanation is available for this question!


47)   Megaphylls i.e. leaves with divided veins with an expanded lamina is a dharacteristic of :

a. Lycopods
b. Ferns
c. Seed plants
d. Both b and c
Answer  Explanation 

ANSWER: Both b and c

Explanation:
No explanation is available for this question!


48)   The arrangement of unequal dichotomous branches in one plane during evolution of leaves is called

a. Overtopping
b. Fusion
c. Webbing
d. Planation
Answer  Explanation 

ANSWER: Planation

Explanation:
No explanation is available for this question!


49)   Which of the following statement about filicinae a group of tracheophytes is incorrect:

a. They belong to sphenopsida
b. They are seedless and their leaves are called fronds
c. They live in shady and moist areas.
d. They show circinate vernation.
Answer  Explanation 

ANSWER: They belong to sphenopsida

Explanation:
No explanation is available for this question!


50)   Due to which property of Adiantum and example of Filicinae is called Maidenhairfern?

a. Its short thick branched horizontally growing rhizome
b. Fibrous adventituous roots arise from the lower side of rhizome
c. Shows heteromorphic alternation of generation
d. Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures
Answer  Explanation 

ANSWER: Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures

Explanation:
No explanation is available for this question!