Biology Mcqs

MCQS (BIOLOGY)

Arthropoda MCQs

1. In arthropods, this is complete

(a) circulatory system

(b) respiratory structures

(c) digestive system

(d) reproductive structures

Answer: (c)

2. The periplaneta belongs to which of this phyla

(a) Echinodermata

(b) Annelida

(c) Mollusca

(d) Arthropoda

Answer: (d)

3. The labrum in cockroach is attached to the head capsule through the means of

(a) Clypeus

(b) Genas

(c) Frons

(d) All the above

Answer: (a)

4. The characteristic of pronounced cephalisation is seen in

(a) Arthropoda

(b) Mollusca

(c) Annelida

(d) Echinoderms

Answer: (a)

5. This is the basic unit in the eye of insect/cockroach

(a) Corneal facet

(b) Ommatidium

(c) Rhabdome

(d) Retina

Answer: (b)

6. This is the common factor between housefly, anopheles and cockroach

(a) three pair of legs

(b) two pair of wings

(c) cuticle covering the body

(d) presence of cephalothorax

Answer: (a)

7. Pick the common trait in rats, bed bugs, mosquitoes, leeches

(a) all these have a sexual phase

(b) all these have no cellular membrane

(c) all these do not have a nucleus

(d) all these have an anticoagulatin

Answer: (a)

8. The growth in arthropods goes along with this process

(a) mitosis

(b) only molting

(c) only ecdysis

(d) ecdysis and molting

Answer: (d)

9. To view the haemocoel, you would pick this animal

(a) Sponge

(b) Earthworm

(c) Scolopendra

(d) Hydra

Answer: (c)

10. In cockroach, the spiracles are found in

(a) thorax – 2 pairs, abdomen – 4 pairs

(b) thorax – 2 pairs, abdomen – 6 pairs

(c) thorax – 2 pairs, abdomen – 8 pairs

(d) thorax – 2 pairs, abdomen – 10 pairs

Answer: (c)

MCQs On Gymnosperm

1. ‘Saccus’ term is used for

(a) exine of pollen grains of Pinus

(b) intine of pollen grains of Pinus

(c) Wings of pollen grains of Pinus

(d) Wings of seeds of Pinus

Answer: (c)

2. Flowers and cones are similar because

(a) both assist seed dispersal

(b) both are responsible for attracting insects to pollinate

(c) both are shiny and bright

(d) both are reproductive structures

Answer: (d)

3. An autotrophic, prokaryotic and nitrogen-fixing symbiont is present in

(a) Cicer

(b) Cycas

(c) Sequoia

(d) Pinus

Answer: (b)

4. Pick the pair that is incorrectly matched

(a) Cycas – coralloid roots

(b) Abies – wood tar, wood gas

(c) Pinus – Mycorrhizal roots

(d) Sequoia – Redwood tree

Answer: (b)

5. This serves as a connecting link between the angiosperms and gymnosperms

(a) Gnetales

(b) Coniferales

(c) Ginkgoales

(d) Cycadales

Answer: (a)

6. Though Cycas has an embryo with two cotyledons, it is not grouped under dicotyledonous plants as

(a) ovules are naked

(b) possesses compound leaves

(c) has megasporophyll

(d) resembles a palm tree

Answer: (a)

7. In gymnosperms, the ovules typically are

(a) bitegmic and anatropous

(b) bitegmic and orthotropous

(c) unitegmic and orthotropous

(d) unitegmic and anatropous

Answer: (c)

8. Tallest known gymnosperm is

(a) Pinus

(b) Ginkgo

(c) Sequoia

(d) Ephedra

Answer: (c)

9. Inverted omega-shaped organization of vascular bundles is seen in

(a) cycas root

(b) cycas stem

(c) cycas leaflet

(d) cycas rachis

Answer: (d)

10. Phanerogams without the ovaries are

(a) angiosperms

(b) pteridophytes

(c) gymnosperms

(d) all the above

Answer: (c)

MCQs on Algae

1. Which one of the following is a colonial alga?

(a) Ulothrix

(b) Spirogyra

(c) Volvox

(d) Chlorella

Answer: (c)

2. Which of the following shows zygotic meiosis?

(a) Chlamydomonas

(b) Marchantia

(c) Funaria

(d) Fucus

Answer: (a)

3. Find the incorrect statement

(a) Agar-agar is produced from Gracilaria

(b) Chlorella is used in space food

(c) Mannitol is a food reserve of Rhodophyceae

(d) Algin is produced by algae

Answer: (c)

4. Which of the following has non-flagellated isogamous gametes?

(a) Spirogyra

(b) Chlamydomonas

(c) Volvox

(d) Fucus

Answer: (a)

5. Mannitol is a reserved food found in

(a) Gracillaria

(b) Porphyra

(c) Chara

(d) Fucus

Answer: (d)

6. Which of the following contains chlorophyll a, b, phycoerythrin and phycocyanin?

(a) Chlorophyta

(b) Phaeophyta

(c) Rhodophyta

(d) Bacillariophyta

Answer: (c)

7. Which of the following is rich in protein?

(a) Ulothrix

(b) Spirogyra

(c) Nostoc

(d) Chlorella

Answer: (d)

8. Ulothrix produces

(a) isogametes

(b) heterogametes

(c) anisogametes

(d) basidiospores

Answer: (a)

9. What is the mode of sexual reproduction in Chlorophyceae?

(a) oogamous

(b) anisogamous

(c) isogamous

(d) all of the above

Answer: (d)

10. What is the shape of chloroplast in Chlamydomonas?

(a) cup-shaped

(b) spiral

(c) stellate

(d) collar-shaped

Answer: (a)

Mcqs on Plant Morphology

Example of partial stem parasite— 

 a.Orobanche.

b. Cuscuta

c.Loranthus⭐

d. Tinospora

Ans: C⭐

Rhizophora has— 

a. Prop roots

b. Stilt root

c. Pneumatophore

d. Modified root

Ans: c⭐

Polyandria is related to —

A. stemens eleven to nineteen attached to the receptcle

B .stamens twenty or more, attached to the receptcle

C. stamens eleven to nineteen attached to the calyx

D. stamens twenty or more, attached to the calyx 

Ans: b⭐

Diacytic stomata refers to the family— 

a. Rubiaceae.

b. Caryophyllaceae.⭐

c. Asteraceae

d. Moraceae.

Ans: b

Members of Asclepiadaceae differ from apocyanaceae in having — 

a.Latex 

b.Translators ⭐

C. Corona

d. Bicarpellary ovary 

Tentacles in Drosera, movement  due to — 

a. Thigmonasty⭐

b. Epinasty

c.nyctinasty

d. None of them.

Monocot with reticulate venation — 

a. Musa

b. Bignonia

c. Dioscorea⭐

d. Avena

Leaflets get modified into tendrillar structure in— 

a. Lathyrus

b. Clematis

c. Pisum⭐

d. Smilax

Pollination by a gall wasp( blastophaga) is related to which of the following —

a. Verticillaster

b. Cyathium

c. Panicle of spikelet 

d. Hypanthodium⭐

Extra axillary inflorescence found in the family— 

solanaceae⭐

Malvaceae

Lamiaceae

Cucurbitaceae.

Basal placentation is the characteristic feature of family— 

Verbenaceae

Compositae⭐

Asclepiadaceae

Ranunculaceae.

Time gap between the pollination and fertilization in pinus is — 

A few week

A few hours

Nearly one year⭐

None

"Gymnosperm" term coined by —

Haeckel

Theophrastus⭐

Chamberlain

Goebel.

Largest pollen chamber found in —

Cycas

Pinus

Gnetum

Ephedra.⭐

 Sahnia( discovered by Birbal sahni, from Rajmahal hill) is — 

Seed bearing organ

Leaves bearing organ

Pollen bearing organ ⭐

Stem bearing organ

Lever mechanism of pollination  found in— 

Acanthaceae

Lamiaceae⭐

Verbenaceae

Malvaceae.

The central regional circle of BSI situated in— 

Kolkata

Delhi

Allahabad⭐

Mumbai.

Assimilatory leaves found in— 

Ephedra 

Ginkgo

Pinus

Cycas.⭐

Least chromosome number in plant is 2n= 4 and it is found in family ?

 a.Asteraceae⭐

 b.Poaceae 

 c. Liliaceae 

 d.Orchidaceae 

Siliqua develops from—

a. Bicarpellary gynoecium⭐

b. Monocarpellary gynoecium

C. Polycarpellary gynoecium

D. Thalamus.

PLANT KINGDOM MCQS

1.Yeast cell divides by

(A) Mitosis only

(B) Mitosis and Amitosis ✅

(C) Endomitosis and Amitosis

(D) Mitosis and Endomitosis

2.Yeast produces an enzyme complex that is responsible for fermentation. The enzyme complex is

(A) Aldolase

(B) Dehydrogenase

(C) Invertase

(D) Zymase ✅

3.The seed of Pinus represents

(A) One generation

(B) Two generations

(C) Three generations ✅

(D) Four generations

4 . Cataphylls are

(A) Leaves of Selaginella

(B) Scaly leaves of Pinus ✅

(C) Needles of Pinus

(D) Foliar leaves of Pinus

5. Marine algae flourished well during which period

(A) Triassic

(B) Devonian

(C) Permian

(D) Ordovician ✅

6. Agranal chloroplast are found in

(A) Bryophytes

(B) Gymnosperms

(C) Green algae ✅

(D) Angiosperms

7. Palmella stage is produced

(A) In rainy season

(B) During unfavourable conditions ✅

(C) During favourable conditions

(D) None of these

8. Chitin present in fungal wall has a formula

(A) (C22H54N4O21)n ✅

(B) (C21H54N4O22)n

(C) (C22H54N4O13)n

(D) (C22H24N4O21)n

9. Which type of tissue is found in the fungi

(A) Parenchyma

(B) Chlorenchyma

(C) Plectenchyma ✅

(D) Collenchyma

10. Who gave the parasitic nature of fungus in plants

(A) Pasteur

(B) Anton De Bary

(C) Robert Koch ✅

(D) J.F. Kuhn

1. Robert Hooke discovered ____ of cell

A. Cell membrane 

B. Nucleus

C. Cell Wall 

D. Cytoplasm

Ans. (C)

Exp. 

2. Which of the following cell organelles is non membrane bound and found in both 

prokaryotes and eukaryotes?

A. Lysosomes 

B. Ribosomes 

C. Centriole 

D. Mitochondria 

Ans. (B)

Exp. 

3. Which of the following structure is found only in prokaryotic Cell?

A. Plasmid 

B. Nucleus

C. Mitochondria 

D. Ribosomes 

Ans. (A)

Exp.

4. The genomic DNA of bacterium is 

A. Circular

B. Linear 

C. Segmented 

D. Rod shaped

Ans. (A)

Exp. 

5. Which of the following component provides sticky character to the bacterial cell?

A. Cell Wall 

B. Nuclear membrane 

C. Plasma membrane 

D. Glycocalyx

Ans. (D)

Exp.

6. Genetic material of prokaryotic cell is known as

A. Nucleus

B. Centrosomes 

C. Nucleoid 

D. Mesosomes

Ans. (C)

Exp.

7. Which type of vacuole provides buoyancy to bacteria

A. Sap vacuole 

B. Contractile vacuole

C. Gas vacuole 

D. Food vacuole

Ans. (C)

Exp.

8. The ___ are small bristle like fibres sprouting out of the bacterial cell:

A. Pilli

B. Mesosomes 

C. Cilia

D. Fimbriae

Ans. (D)

Exp.

9. Animal cell is different from plant cell in having

A. Ribosomes

B. Nucleus 

C. Centrosomes 

D. Golgi bodies 

Ans. (C)

Exp.

10. Gas vacuoles are found in

A. Blue green algae

B. Green and purple bacteria

C. Bacillus

D. More than one option correct

Ans. (D)

Exp.

###############

Water has maximum density at____________

A. 0°

B. 4°C

C. 4° K

D. 4.8°

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 2

Question:

The scientific study of livings is called?

A. Anatomy 

B. Biology 🧫

C. Geology 

D. ZoologyTopic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 

Questio

Kingdom Fungi includes_______________

A. A cellular, eukaryotic organism

B. Non-chlorophylls, multicellular eukaiyotlc organisms

C. Non-chlorophylls, multioellular,thailophytic organisms😊

D. Chlorophyllus, multicellular, eukaryotic Organism

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 10

Question:

The branch in which organism's life cycle, mode of transmission and interaction with their hosts are studied is:

A. Anatomy 

B. Physiology 

C. Parasitology 😊

D. Social BiologyTopic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 1

Questio

The molecules of living matter that provide building blocks are mostly based on

A. Carbon 😊

B. Nitrogen

C. Hydrogen

D. AmmoniaTopic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 2

Questio

Immunization by vaccination was first introduced by

A. Fleming in 1945

B. Florey & Chain in 1975

C. Flore & Chain in 1795

D. Edward Jenner in 1795😊

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 29

Question:

The Science of growing terrestrial plants in an aerated solution is_________?

A. Hydrodynamics 

B. Hydroponics 🧫

C. Hydrotonics 

D. None of themTopic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 3

Questio

Which Vitamin is needed for the formation of a light-sensitive pigment in the retina

A. Vitamin A🧫

B. Vitamin C

C. Vitamin D

D. B complexTopic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 3

Questio

The study of fossils is called

A. Environmental Biology

B. Historical biology

C. Palaeontology🧫

D. Social biology

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 76

Question:

Messenger RNA is formed in_________?

A. nucleus 😊

B. chloroplast 

C. mitochondria 

D. none of these

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 80

Question:

Protein factory is___________?

A. nucleus 

B. ribosome 🧫

C. golgi complex 

D. centriole

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 82

Question:

Smallest disease causing agents in plants are ?

A. virion 

B. mycoplasma 

C. viroids 🧫

D. prionsTopic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 8

Questio

Pigment present in red algae is_____________

A. fucoxanthin

B. phycocyanin

C. phycoerythrin🧫

D. bilirubin

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 102

Question:

Operculum is present in_____________?

A. bony fish 🐠

B. sea fish 

C. cartilaginous fish 

D. none of these

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 106

Question:

The heart is enclosed in a membrane called________?

A. pleura 

B. pericardium 🧫

C. peritoneum 

D. epithelium

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 111

Question:

Study of insects is called_________?

A. Immunology 

B. Parasitology 

C. Entomology 🧫

D. Paleontology

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 114

Question:

Euglena belongs to the kingdom___________?

A. Fungi 

B. Monera 

C. Protista 😊

D. Non of them

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 130

Question:

Ribosomes are tiny Granules first studied in 1955 by__________?

A. De-Duve 

B. Schwann 

C. August Weismann 

D. Palade🧫

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 142

Question:

A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called__________?

A. Substrate 

B. Co-factor 

C. Inhibitor 🧫

D. Promotor

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 144

Question:

Percentage of water in brain cells is_______?

A. 0.2

B. 0.65

C. 0.85🧫

D. 0.89

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 146

Question:

Different species of plants and animals living in the same habitat is called ___________?

A. Population 

B. Community 🧫

C. Biome 

D. Habitat

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 172

Question:

Pox viruses are_________?

A. RNA non-enveloped 

B. RNA enveloped 

C. DNA non-enveloped 

D. DNA enveloped😊

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 176

Question:

Double fertilization is feature of____________?

A. Ferns 

B. Whisk ferns 

C. Gymnosperms 

D. Angiosperms🧫

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 178

Question:

Initial pH of food vacuole during digestion in amoeba is____________?

A. 5.3

B. 5.6😊

C. 7.3

D. 7.6

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 181

Question:

Salivary glands present in front of ear are___________?

A. Sublingual 

B. Submaxillary 

C. Submandibular 

D. Parotid🧫

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 196

Question:

According to cohesion-tension theory, tension is created by__________________?

A. Hydrogen bonding 

B. Transpiration 😊

C. Adhesion 

D. Root prerssure

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 197

Question:

Deoxygenated blood first enters in _________ part in fishes?

A. Sinus venosus 🧫

B. Right atrium 

C. Left atrium 

D. Conus arteriosus

Topic: Miscellaneous MCQs Set-01 MCQs

MCQs No.: 200

Question:

“lubb” sound is produced due to___________________?

A. Opening of inlet valve 

B. Closure of inlet valve😊 

C. Opening of outlet valve 

D. Closure of outlet valve