11th Standard Syllabus & Materials
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Published on: 13/05/2022
QB365 provides detailed and simple solution for every book back questions in class 11 Biology subject.It will helps to get more idea about question pattern in every book back questions with solution.
latest Book back QuestionsDownload Tamil Nadu 11th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
Select the correctly matched one
| A) Human urine | i) Auxin –B |
| B) Corn gram oil | ii) GA3 |
| C) Fungus | iii) Abscisic acid II |
| D) Herring fish sperm | iv) Kinitin |
| E) Unripe maize grains | v) Auxin A |
| F) Young cotton bolls | vi) Zeatin |
| A | B | C | D | E | F |
| iii | iv | v | vi | i | ii |
| A | B | C | D | E | F |
| v | i | ii | iv | vi | iii |
| A | B | C | D | E | F |
| iii | v | vi | i | ii | iv |
| A | B | C | D | E | F |
| ii | iii | v | vi | iv | i |
2.
Which of the following reaction is not involved in Kreb's cycle.
Shifting of phosphate from 3C to 2C
Splitting of Fructose 1,6 bisphosphate of into two molecules 3C compounds
Dephosphorylation from the substrates
All of these
3.
Assertion (A): Oxidative phosphorylation takes place during the electron transport chain in mitochondria.
Reason (R): Succinyl CoA is phosphorylated into succinic acid by substrate phosphorylation.
A and R is correct. R is correct explanation of A
A and R is correct but R is not the correct explanation of A
A is correct but R is wrong
A and R is wrong.
4.
For every CO2 molecule entering the C3 cycle, the number of ATP & NADPH required ________.
2ATP + 2NADPH
2ATP + 3NADPH
3ATP + 2NADPH
3ATP + 3NADPH
5.
6.
Identify the correct statement
i. Sulphur is essential for amino acids Cystine and Methionine
ii. Low level of N, K, S and Mo affect the cell division
iii. Non-leguminous plant Alnus which contain bacterium Frankia
iv. Denitrification carried out by nitrosomonas and nitrobacter.
I, II are correct
I, II, III are correct
I only correct
all are correct
7.
If a plant is provided with all mineral nutrients but, Mn concentration is increased, what will be the deficiency?
Mn prevent the uptake of Fe, Mg but not Ca
Mn increase the uptake of Fe, Mg and Ca
Only increase the uptake of Ca
Prevent the uptake Fe, Mg, and Ca
8.
Munch hypothesis is based on _______.
Translocation of food due to TP gradient and imbibition force
Translocation of food due to TP
Translocation of food due to imbibition force
None of the above
9.
What type of transpiration is possible in the xerophyte Opuntia?
Stomatal
Lenticular
Cuticular
All the above
10.
Which among the following is correct?
i. Apoplast is fastest and operate in nonliving part.
ii. Transmembrane route includes vacuole.
iii. Symplast interconnect the nearby cell through plasmadesmata.
iv. Symplast and transmembrane route are in living part of the cell
i and ii
ii and iii
iii and iv
i, ii, iii, iv
11.
What is the fate of primary xylem in a dicot stem showing extensive secondary growth?
It is retained in the centre of the axis
It gets crushed
May or may not get crushed
It gets surrounded by primary phloem
12.
The common bottle cork is a product of______.
Phellem
Phellogen
Xylem
Vascular cambium
13.
In the diagram of lenticel identify the parts marked as i, ii, iii, iv

i. phellem, ii. Complementary tissue, iii.Phelloderm, iv. Phellogen.
i. Complementary tissue, ii. Phellem, iii.Phellogen, iv. Phelloderm
i. Phellogen, ii. Phellem, iii. Phelloderm, iv. complementary tissue
i. Phelloderm, ii. Phellem, iii. Complementary tissue, iv. Phellogen
14.
When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf?
Xylem would be on top and the phloem on the bottom
Phloem would be on top and the xylem on the bottom
Xylem would encircle the phloem
Phloem would encircle the xylem
15.
Read the following sentences and identify the correctly matched sentences.
i. In exarch condition, the protoxylem lies outside of metaxylem.
ii. In endarch condition, the protoxylem lie towards the centre.
iii. In centarch condition, metaxylem lies in the middle of the protoxylem.
iv. In mesarch condition, protoxylem lies in the middle of the metaxylem.
i, ii and iii only
ii, iii and iv only
i, ii and iv only
All of these
16.
When the root is thick and fleshy, but does not taken a definite shape, it said to be _________
Nodulose root
Tuberous root
Monilliform root
Fasiculated root
17.
Gynoecium with united carpels is termed as ______.
Apocarpous
Multicarpellary
Syncarpous
None of the above
18.
Identify the incorrect statement about the Gram positive bacteria.
Teichoic acid absent
High percentage of peptidoglycan is found in cell wall
Cell wall is single layered
Lipopolysaccharide is present in cell wall
19.
Proteins perform many physiological functions. For example some functions as enzymes. One of the following represents an additional function that some proteins discharge:
Antibiotics
Pigment conferring colour to skin
Pigments making colours of flowers
Hormones
20.
Enzymes that catalyse interconversion of optical, geometrical or positional isomers are ______________
Ligases
Lyases
Hydrolases
Isomerases
21.
An example of feedback inhibition is
Cyanide action on cytochrome
Sulpha drug on folic acid synthesiser bacteria
Allosteric inhibition of hexokinase by glucose-6-phosphate
The inhibition of succinic dehydrogenase by malonate
22.
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.
Neither lipid nor proteins can flip-flop
Both lipid and proteins can flip flop
While lipids can rarely flip-flop proteins cannot
While proteins can flip-flop lipids cannot
23.
Anastral mitosis is the characteristic feature of _________
Lower animals
Higher animals
Higher plants
All living organisms
24.
In meiosis crossing over is initiated at ______.
Diplotene
Leptotene
Pachytene
Zygotene
25.
1.
(b)
| A | B | C | D | E | F |
| v | i | ii | iv | vi | iii |
2.
(d)
All of these
3.
(b)
A and R is correct but R is not the correct explanation of A
4.
(c)
3ATP + 2NADPH
5.
(c)
6.
(b)
I, II, III are correct
7.
(a)
Mn prevent the uptake of Fe, Mg but not Ca
8.
(b)
Translocation of food due to TP
9.
(c)
Cuticular
10.
(d)
i, ii, iii, iv
11.
(b)
It gets crushed
12.
(b)
Phellogen
13.
(a)
i. phellem, ii. Complementary tissue, iii.Phelloderm, iv. Phellogen.
14.
(a)
Xylem would be on top and the phloem on the bottom
15.
(c)
i, ii and iv only
16.
(b)
Tuberous root
17.
(c)
Syncarpous
18.
(d)
Lipopolysaccharide is present in cell wall
19.
(d)
Hormones
20.
(d)
Isomerases
21.
(c)
Allosteric inhibition of hexokinase by glucose-6-phosphate
22.
(c)
While lipids can rarely flip-flop proteins cannot
23.
(c)
Higher plants
24.
(c)
Pachytene
25.
(b)
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
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Business Maths and Statistics

Computer Science

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Computer Applications

History

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