NCERT Class 11/MCQ Questions for Class 11 Biology sets 2 Sample Test,Sample questions

Question:
A nucleosome is a portion of the chromonema containing ______.

1.both DNA and histones

2.only histones

3.both DNA and RNA

4.only DNA


Question:
A protein having both structural and enzymatic traits is

1.Collagen

2.Trypsin

3.Myosin

4.Actin


Question:
A.T.S. of a young dicot root can be distinguished from that of a young dicot stem by the presence of

1.radial arrangement of xylem and phloem

2.collateral arrangement of xylem and phloem

3. interfascicular cambium

4.intrafascicular cambium


Question:
After the secondary growth, the oldest layer of secondary phloem in a dicot stem is located

1. just outside the vascular cambium

2.just inside the vascular cambium

3.just inside the vascular phloem

4.just outside the secondary xylem


Question:
An example of competitive inhibition of an enzyme is the inhibition of

1. succinic dehydrogenase by malonic acid

2.cytochrome oxidase by cyanide

3. hexokinase by glucose-6-phosphate

4.carbonic anhydrase by carbon dioxide


Question:
Arrange the following events of meiosis in the correct sequence: I. Terminalization II. Crossing over III. Synapsis IV. Disjunction of genomes The correct sequences:

1.II, I, IV, III

2.III, II, I, IV

3.IV, III, II, I

4.I, IV, III, II


Question:
Assertion: Arachidic acid is an unsaturated fatty acid.
Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids.

1.Both Assertion and Reason are true and Reason is the correct explanation of the Assertion

2.Both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.

3.Assertion is true, but Reason is false.

4. Both Assertion and Reason are false


Question:
Bacterial flagella is made up of

1.tubulin

2.flagellin

3.chitin

4.None of these


Question:
Blood corpuscles are formed in the

1.Haversian canal

2.endosteum

3.red bone marrow

4.pancreas


Question:
Callose deposition is found in

1.tracheids

2.companion cells

3. sieve areas

4. phloem parenchyma


Question:
Cell plate grows from

1.walls to the centre

2.centre to the walls

3. in patches

4.simultaneously


Question:
Cell secretion is done by-

1. Plastids

2.ER

3.Golgi apparatus

4.Nucleolus


Question:
Centrosome is found in-

1.Cytoplasm

2.Nucleus

3.Chromosomes

4.Nucleolus


Question:
Choose the correct sequence. A. Chromatin condensation B. Protein synthesis C. Duplication of centrioles D. Centrioles moves towards opposite poles

1.C, A, B, D

2.C, B, A, D

3. C, D, B, A

4.A, C, D, B


Question:
Choose the incorrect statement.

1. Vascular system of frog is closed type.

2.Frogs have 4-chambered heart

3.During aestivation and hibernation, skin acts as respiratory organ

4.All the statements are correct


Question:
During which stage the chromosomes first become visible.

1.Anaphase

2.Metaphase

3.Prophase

4.Telophase


Question:
Endodermis cells are rich in

1. cellulose

2.starch grains

3.fibers

4.resins and wax


Question:
Enzymes increase the rate of reaction by

1.lowering activation energy

2.increasing activation energy

3.increasing temperature and pH

4.decreasing temperature and pH


Question:
Enzymes, vitamins and hormones are common in

1. Enhancing oxidative metabolism

2.Being synthesised in the body of organisms

3.Being proteinaceous

4.Regulating metabolism


Question:
Fats are richly found in

1. alveolar tissue

2.lymph glands

3.adipose tissue

4. liver cells


Question:
Feedback inhibition of enzymes is affected by which of the following

1.enzyme

2.substrate

3.end products

4. intermediate end products


Question:
Frogs are beneficial to us because

1.they protect crops.

2. they links food web

3. they are food to man

4.All of these


Question:
Fusifrom initial cells of cambium from

1. vascular rays

2.tracheary elements

3. ray parenchyma

4. phloem parenchyma


Question:
Golgi complex and endoplasmic reticulum cannot be seen during

1. late telophase

2. late prophase

3.early anaphase

4.late metaphase


Question:
Hydrolysis of starch occurs with the help of

1.Peptidase

2.Amylase

3.Sucrose

4.Lipase


Question:
If you are provided with root-tips of onion in your class and are asked to count the chromosomes which of the following stages can you most conveniently look into:

1.Prophase

2.Anaphase

3.Telophase

4.Metaphase


Question:
In a monocot leaf

1. bulliform cells are absent from the eqidermis

2.veins from a network

3.mesophyll is well differentiated into palisade and spongy parenchyma

4.mesophyll is not differentiated into palisade and spongy parenchyma


Question:
In mitosis, nuclear envelope and nucleolus disappear during

1.Metaphase

2.Interphase

3.Prophase

4.Telophase


Question:
In mitosis, nuclear envelope and nucleolus disappear during

1.Metaphase

2.Interphase

3.Prophase

4.Telophase


Question:
Inhibitor binds to the active site of the enzyme. Hence blocking the reaction. This is an example of

1. allosteric inhibition

2.feedback inhibition

3.uncompetitive inhibition

4.competitive inhibition


Question:
Insulin is made up of _______ and _______.

1. glucose and fructose

2.glucose and fructose

3.fructose and mannose

4.mannose and glucose


Question:
Inulin is made up of _______ and _______.

1. glucose and fructose

2.glucose and fructose

3.fructose and mannose

4.mannose and glucose


Question:
Karyokinesis is the term used for

1.division of cytoplasm

2.division of nucleoplasm

3. division of nucleus

4. separation of daughter chromosomes


Question:
Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flip-flop movement)?

1. Neither lipids, nor proteins can flip-flop

2.Both lipids and proteins can flip-flop

3.While lipids can rarely flip-flop, proteins can not

4.While proteins can flip-flop, lipids can not


Question:
Lecithin is a

1.polysaccharide

2.protein

3.nucleic acid

4.lipid


Question:
Match the columns.
1. Cytoskeleton – A. hair-like outgrowth
2. Flagella – B. proximal region of centriole
3. Hub – C. bristle-like structures
4. Fimbriae – D. filamentous protein structure

1. 1-D, 2-A, 3-B, 4-C

2. 1-D, 2-C, 3-B, 4-A

3.1-B, 2-D, 3-A, 4-C

4.1-D, 2-A, 3-C, 4-B


Question:
Middle lamella is made up of ___________.

1.calcium sulphide

2.calcium pectate

3.calcium carbonate

4.calcium chloride


Question:
NADP contains vitamin ______.

1. B1

2.B2

3.B3

4.B12


Question:
Osteoblasts are found in

1.blood

2.muscle

3.bone

4.catrilage


Question:
Pith is very well developed in

1.monocot root and monocot srem

2.monocot root and dicot root

3.dicot root and monocot stem

4.monocot root and dicot stem


Question:
Plasmolysis occurs due to-

1.Absorption

2.Endosmosis

3.Osmosis

4.Exosmosis


Question:
Protein not found in the connective tissues is

1.actin

2.ossein

3.collagen

4.elastin


Question:
Spot the salivary gland in the following :

1.sublingual

2.adrenal

3.Brunners

4.lacrimal


Question:
Stem develops from

1.radicle

2.cotyledon

3.mesocarp

4.plumule


Question:
Stem grows in girth due to

1.outer cortical

2.epidermis

3. vascular cambium

4.phellogen


Question:
Tendons connect the following:

1.bone to bone

2.muscle to muscle

3. cartilage to muscle

4.bone to muscle


Question:
The characteristic of simple eqithelium is that

1. the cells are loosely placed

2.they are single – layered in thickness

3.cells are tightly packed with no intercelluar spaces (

4.cells are generally ciliated


Question:
The ciliated epithelium in our body may be found in

1. trachea

2.ureter

3.bile duct

4.intestines


Question:
The cytoplasmic connections from cell to cell are known as

1.middle lamella

2.plasmodesmata

3.cell membrane system

4.endoplasmic reticulum


Question:
The fastest enzyme known is

1. DNA polymerase

2.carbonic anhydrase

3.carbonic dehydrogenase

4.DNA ligase


Question:
The function of ribosomes is

1.metabolism

2.lipid synthesis

3.protein synthesis

4. photosynthesis


Question:
The innermost layer of cortex which shows casparian thickenings in its cells is called as

1.epidermis

2.endodermis

3.pericycle

4.exodermis


Question:
The largest cell in the human body is-

1.Nerve cell

2.Muscle cell

3.Liver cell

4. Kidney cell


Question:
The longest cell in human body is

1. red blood cells

2.white blood cells

3.columnar epithelial cells

4. nerve cells


Question:
The longest cell in human body is

1. red blood cells

2.white blood cells

3.columnar epithelial cells

4. nerve cells


Question:
The main function of the skin of frog is

1. the exchange of respiratory gases

2. the storage of fat

3. the storage of energy

4.to convert light vitamin D


Question:
The main site for synthesis of lipids is

1.vacuoles

2.RER

3.SER

4.Golgi body


Question:
The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes, is

1.splitting of the centromeres

2.splitting of the chromatids

3.replication of the genetic material

4.condensation of the chromatin


Question:
The minimum amount of energy required to initiate a chemical reaction is called

1. enzymatic energy

2.activation energy

3.substrate energy

4.initiation energy


Question:
The term Cell was given by-

1.Leeuwenhoek

2.Robert hooke

3.Flemming

4.Robert Brown


Question:
The vascular tissue of blood is made up of

1.RBC

2.plasma

3. platelets

4.All of the above


Question:
Vessels differ from tracheids

1.in being living

2. in being derived from a single cell

3.in that they consist of vertical row of cells with cross walls dissolved

4.in coducting water and minerals


Question:
Walls of sclerenchyma are

1.rigid

2.lignified

3.pectinised

4.suberised


Question:
What type of plant is formed when colchicine is used in the process of development of Raphanobrassica?

1. Autotetraploid

2.Haploid

3.Triploid

4.Allotetraploid


Question:
Which is called Suicidal Bag?

1.Centrosome

2.Lysosome

3.Mesosome

4.Chromosome


Question:
Which is not a part of reproductive system of female cockroach?

1.Phallic gland

2.Vestibulum

3.Gonapophyses

4.Collaterial glands


Question:
Which membrane protects the eyes of frog in water?

1. Tympanum

2.Skin

3.Sebaceous

4.Nictitating


Question:
Which of the following does not have cell wall?

1. Mycoplasma

2.Bacteria

3.PPLO

4.Blue green algae


Question:
Which of the following helps in locomotion of earthworms?

1.Clitellum

2.Setae

3. Intersegmental grooves

4.Nephridiophores


Question:
Which of the following helps in the curling of the leaf surface?

1.Bulliform cells

2.Xylem tissue

3.Palisade parenchyma

4.Bundle sheath cells


Question:
Which of the following influence feedback inhibition of enzyme?

1. End product

2. External factors

3.Enzyme

4.Substrate


Question:
Which of the following is absent in female frog?

1.Webbed feet

2.Copulatory pads

3.Tympanum

4.All are present


Question:
Which of the following is not a polysaccharide?

1.Lactose

2.Starch

3.Glycogen

4.Dextrin


Question:
Which of the following is not a pyrimidine?

1.Uracil

2.Cytosine

3.Guanine

4.Thymine


Question:
Which of the following is true about heartwood?

1.They are dead but gives mechanical support to stem.

2. They are light in color.

3.They conduct water and minerals

4. 1 and 3


Question:
Which of the following statements regarding enzyme inhibition is correct?

1.Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein

2.Non-competitive inhibitors often bind to the enzyme irreversibly

3.Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme

4. Non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate


Question:
Which one of the following also acts as a catalyst in a bacterial cell?

1. 23 sr RNA

2.5 sr RNA

3.sn RNA

4.hn RNA


Question:
Which one of the following is a scent gland of mammals?

1.Bartholin

2.Anal

3.Prostate

4.Adrenal


Question:
Which one of the four parts mentioned below is not part of a single uriniferous tubule ?

1.Bowman scapsule

2.Loop of Henle

3.Distal convoluted tubule

4.Collecting ducts


Question:
With reference to enzymes, which one of the following statements is true?

1. Apoenzyme = Holoenzyme + Coenzyme

2.Holoenzyme = Apoenzyme + Coenzyme

3.Coenzyme = Apoenzyme + Holoenzyme

4.Holoenzyme = Coenzyme – Apoenzyme


Question:
___________ increases the surface area for mitochondrial activity.

1.Inner membrane

2. Inter membrane space

3.Matrix

4.Cristae


More MCQS

  1. MCQ Questions for Class 11 Chemistry sets 1
  2. MCQ Questions for Class 11 Chemistry sets 2
  3. MCQ Questions for Class 11 Chemistry sets 3
  4. MCQ Questions for Class 11 Physics sets 1
  5. MCQ Questions for Class 11 Physics sets 2
  6. MCQ Questions for Class 11 Physics sets 3
  7. MCQ Questions for Class 11 Biology sets 1
  8. MCQ Questions for Class 11 Biology sets 2
  9. MCQ Questions for Class 11 Biology sets 3
  10. MCQ Questions for Class 11 Biology sets 4
  11. MCQ Questions for Class 11 Maths sets 1
  12. MCQ Questions for Class 11 Maths sets 2
  13. MCQ Questions for Class 11 Maths sets 3
  14. MCQ Questions for Class 11 English sets 1
  15. Class 11 Sociology MCQs Multiple Choice Questions sets 1
  16. MCQ Questions for Class 11 Business Studies sets 1
  17. MCQ Questions for Class 11 Geography
  18. MCQ Questions for Class 11 Geography sets 2
  19. MCQ Questions for Class 11 Geography sets 3
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!