Class 11 Biology Modal Question Paper 2023 [SET-01]

Class 11th Biology Objective Questions

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SET-01

General Instructions:

• All questions are compulsory
• The total number of questions is 40
• Each question carries 1 mark
• Four options are given, select the most correct option
• No marks will be deducted for the wrong answer

Question 1:

The unit of Grana is called:

A) Thylakoid
B) Stroma
C) Stromal lamellae
D) All of these
Answer: (A) Thylakoid

Question 2:

Splitting of Water is associated with –

A) Photosystem I
B)  Lumen of Thylakoid
C) Both Photosystem I and Photosystem II
D)  Inner Surface of Thylakoid Membranes
Answer: (C) Both Photosystem I and Photosystem II

Question 3:

The dark reaction takes place in –

A) Grana
B) Thylakoid Membrane
C) Thylakoid Lumen
D) Stroma
Answer: (D) Stroma

Question 4:

“KRANZ Anatomy” is the characteristic feature of –

A) Calvin Cycle
B) Hatch and Slack Cycle
C) Photorespiration
D) CAM Plants
Answer: (D) CAM Plants

Question 5:

Who observed that all plants are composed of different kinds of cells which form the tissue of the Plant?

A) Schleiden (German Botanist)
B) Schwann (British Zoologist)
C) Rudolf Virchow
D) Robert Brown
Answer: (A) Schleiden (German Botanist)

Question 6:

Decomposition of Organic Nitrogen into Ammonia is called –

A) Nitrogen fixation
B) Nitrification
C) Ammonification
D) Denitrification
Answer: (C) Ammonification

Question 7:

 Ist Action spectrum of photosynthesis was described by 

A) Blackman
B) Joseph Priestley
C)  T. W. Engelmann
D) Ingenhousz
Answer: (C) T. W. Engelmann

Question 8:

Ist stable product in C₄ cycle is:

A) 3 Phosphoglyceric acid (PGA)
B) Oxaloacetic acid (OAA)
C) Phosphoenol pyruvate (PEP)
D) RuBP
Answer: (B) Oxaloacetic acid (OAA)

Question 9:

‘Bioluminescence’ is a characteristic feature of:

A) Coclenterata
B) Ctenophora
C) Platyhelminthes
D) Annelida
Answer: (B) Ctenophora

Question 10:

The number of chambers in the Heart of Crocodile is:

A) 2
B) 3
C) 4
D) 5
Answer: (C) 4

Question 11:

Presence of ‘Pneumatic bones’ is the characteristic feature of:

A) Fish
B) Amphibia
C) Reptile
D) Birds
Answer: (D) Birds

Question 12:

Which one of the following is not a characteristic feature of Mammals?

A) Ear Pinna
B) Presence of Body hairs
C) Mammary gland
D) 2 chambered heart
Answer: (D) 2 chambered heart

Question 13:

The plane of alignment of the chromosome at Metaphase is called:

A) Metaphase plate
B) Cell plate
C) Lateral plate
D) Central plate
Answer: (A) Metaphase plate

Question 14:

Formation of Chiasmata takes place at –

A) Leptotene
B) Zygotene
C) Pachytene
D) Diplotene
Answer: (D) Diplotene

Question 15:

Proteinous constituent of an Enzyme is called:

A)  Co-factor
B) Apoenzyme
C) Holo enzyme
D) Acidic Enzyme
Answer: (B) Apoenzyme

Question 16:

Inhibition of Succinic dehydrogenase by Malonate is an example of:

A) Competitive inhibition
B) Contact inhibition
C) Inhibition
D) Exhibition
Answer: (A) Competitive inhibition

Question 17:

Which of the following statement is Incorrect?

A) Enzymes lowers the Activation energy
B) Enzymes shows highest activity at optimum temperature
C) Co-enzyme is a kind of Co-factor
D) Enzymes lowers the rate of reaction
Answer: (D) Enzymes lowers the rate of reaction

Question 18:

Splitting of water, during photosynthesis, takes place at:

A) PS I
B) PS II
C) Both (1) and (2)
D) There is no splitting of water during photosynthesis
Answer: (B) PS II

Question 19:

C3 cycle is also known as

A) Calvin cycle
B) Hatch and Slack Cycle
C) Crassulacean Acid Metabolism
D) Photorespiration
Answer: (A) Calvin cycle

Question 20:

Law of Limiting Factor was proposed by:

A) Joseph Priestley
B) Englemann
C) Kelvin
D) Blackman
Answer: (D) Blackman

Question 21:

 ‘Five Kingdom Classification’ was proposed by:

A) Linnaeus
B) Whittaker
C) Aristotle
D) Cuvier
Answer: (B) Whittaker

Question 22:

Cell wall of fungi is made up of:

A) Chitin
B) Cellulose
C) Lignin
D) Cuticle
Answer: (A) Chitin

Question 23:

 ‘Deuteromycetes’ is commonly known as:

A)  Imperfect fungi
B) Perfect fungi
C) Sac fungi
D) Mushroom
Answer: (A) Imperfect fungi

Question 24:

 Which one of the following is the largest phylum?

A) Mollusca
B) Annelida
C) Porifera
D) Arthropoda
Answer: (D) Arthropoda

Question 25:

Lichen is a symbiotic association of:

A) Algae and higher plants
B) Fungi and higher plants
C) Algae and Fungi
D) Algae and Michorrhiza
Answer: (C) Algae and Fungi

Question 26:

Viroid is a:

A)  Free RNA
B) RNA
C) Free DNA
D) DNA
Answer: (A) Free RNA

Question 27:

 TMV stands for:

A) Tulip Mosaic Virus
B) Tomato Mosaic Virus
C) Tobacco Mosaic Virus
D) Total Mosaic Vector
Answer: (C) Tobacco Mosaic Virus

Question 28:

Virus that insects a Bacteria is called

A) Viroids
B) Bacteriophage
C) Mycobiont
D) Phycobiont
Answer: (B) Bacteriophage

Question 29:

First terrestrial plants to possess Vascular tissues are:

A) Bryophyte
B) Gymnosperm
C) Angiosperm
D) Pteridophyte
Answer: (D) Pteridophyte

Question 30:

Liverworts and Mosses belong to

A) Bryophyte
B) Gymnosperm
C) Angiosperm
D) Pteridophyte
Answer: (A) Bryophyte

Question 31:

An organism that completely lacks a Cell wall

A) Protists
B) Mycorrhiza
C) Mycoplasma
D) Diatoms
Answer: (C) Mycoplasma

Question 32:

Blue Green Algae is a

A) Algae
B) Fungi
C) Bacteria
D) Virus
Answer: (C) Bacteria

Question 33:

 An Extrachromosomal circular DNA is called as:

A) Plasmids
B) Cosmid
C) Phagemid
D) Desmids
Answer: (A) Plasmids

Question 34:

Subunits of 70 S Ribosome is

A) 50 S and 30 S
B) 40 S and 30 S
C) 40 S and 40 S
D) 60 S and 20 S
Answer: (A) 50 S and 30 S

Question 35:

Splitting of water during photosynthesis is associated with which of the following mineral?

A) Molybdenum
B) Cu
C) Boron
D) Manganese
Answer: (D) Manganese

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