11th Standard Syllabus & Materials
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TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A

Published on: 14/09/2018
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Download 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.
Duplicate specimen of the holotype collected from same population _____________.
Holotype
Isotype
Lectotype
Syntype
2.
Bryophyllum and Dioscorea are example for ______.
Foliar bud, apical bud
Foliar bud, cauline bud
Cauline bud, apical bud
Cauline bud, foliar bud
3.
Curcuma amada, Curcuma domestica, Asparagus, Maranta are example of __________
Tuberous root
Beaded root
Moniliform root
Nodulose root
4.
Example for negatively geotropic roots __________
Ipomoea, Dahlia
Asparagus, Ruellia
Vitis, Portulaca
Avicennia, Rhizophora
5.
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
6.
Roots are ______.
Descending, negatively geotrophic, positively phototropic
Descending, positively geotrophic, negatively phototrophic
Ascending, positively geotrophic, negatively phototrophic
Ascending, negatively geotrophic, positively phototrophic
7.
8.
In an inflorescence where flowers are borne laterally in an acropetal succession the position of the youngest floral bud shall be ______.
Proximal
Distal
Intercalary
Anywhere
9.
Aggregate fruit develops from _____.
Multicarpellary, apocarpous ovary
Multicarpellary, syncarpous ovary
Multicarpellary ovary
Whole inflorescence
10.
Gynoecium with united carpels is termed as ______.
Apocarpous
Multicarpellary
Syncarpous
None of the above
11.
Vexillary aestivation is characteristic of the family _____.
Fabaceae
Asteraceae
Solanaceae
Brassicaceae
12.
Identify the correctly matched pair.
Actinomycete - Late blight
Mycoplasma - Lumpy jaw
Bacteria - Crown gall
Fungi - Sandal spike
13.
14.
Identify the Archaebacterium.
Acetobacter
Erwinia
Treponema
Methanobacterium
15.
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
16.
Which one of the following statement about virus is correct?
Possess their own metabolic system
They are facultative parasites
They contain DNA or RNA
Enzymes are present
17.
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
18.
Enzymes that catalyse interconversion of optical, geometrical or positional isomers are ______________
Ligases
Lyases
Hydrolases
Isomerases
19.
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
20.
The most basic amino acid is
Arginine
Histidine
Glycine
Glutamine
21.
Match the columns and identify the correct option:
| Column I | Column II | ||
| A | Thylakoids | 1. | Disc-shaped sacs in Golgi apparatus |
| B. | Cristae | 2. | Condensed structure of DNA |
| C. | Cisternae | 3. | Flat membranous sacs in stroma |
| D | Chromatin | 4. | Infoldings in mitochondria |
| A | B | C | D |
| (iii) | (iv) | (ii) | (i) |
| A | B | C | D |
| (iv) | (iii) | (i) | (ii) |
| A | B | C | D |
| (iii) | (iv) | (i) | (ii) |
| A | B | C | D |
| (iii) | (i) | (iv) | (ii) |
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.
Many cells function properly and divide mitotically even though they do not have.
plasma membrane
cytoskeleton
mitochondria
plastids
24.
Sequences of which of the following is used to know the phylogeny.
mRNA
rRNA
tRNA
HnRNA
25.
The two subunits of ribosomes remain united at critical ion level of _______.
Magnesium
Calcium
Sodium
Ferrous
26.
Flowers are zygomorphic in ______.
Ceropegia
Thevetia
Datura
Solanum
27.
Perianth is present in_______.
Clitoria ternatea
Datura metel
Allium cepa
Pongamia pinnata
28.
The taxonomy which involves the similarities & dissimilarities among the immune system of different taxa is termed as ______.
Chemotaxonomy
Molecular systematics
Serotaxonomy
Numerical taxonomy
29.
Phylogenetic classification is the most favoured classification because it reflects _______.
Comparative Anatomy
Number of flowers produced
Comparative cytology
Evolutionary relationships
30.
Specimen derived from non-original collection serves as the nomenclature type, when original specimen is missing. It is known as ________ .
Holotype
Neotype
Isotype
Paratype
31.
Anastral mitosis is the characteristic feature of _________
Lower animals
Higher animals
Higher plants
All living organisms
32.
The pairing of homologous Chromosomes on meiosis is known as _____.
Bivalent
Synapsis
Disjunction
Synergids
33.
Colchicine prevents the mitosis of the cells at which of the following stage ______.
Anaphase
Metaphase
Prophase
Interphase
34.
In meiosis crossing over is initiated at ______.
Diplotene
Leptotene
Pachytene
Zygotene
35.
36.
Centromere is required for ______.
transcription
crossing over
cytoplasmic cleavage
movement of chromosome towards pole
37.
In S phase of the cell cycle ______.
Amount of DNA doubles in each cell
Amount of DNA remains same in each cell
Chromosome number is increased
Amount of DNA is reduced to half in each cell
38.
Anaphase promoting complex APC is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in human cell, which of the following is expected to occur?
Chromosomes will be fragmented
Chromosomes will not condense
Chromosomes will not segregate
Recombination of Chromosomes will occur
39.
If mitotic division is restricted in G1 phase of the cell cycle then the condition is known as _____.
S Phase
G2 Phase
M Phase
G0 Phase
40.
The correct sequence in cell cycle is ______.
S-M-G1-G2
S-G1-G2-M
G1-S-G2-M
M-G-G2-S
41.
42.
The haploid number of chromosome for an Angiosperm is 14, the number of chromosome in its endosperm would be
7
14
42
28
43.
Which of following represents gametophytic generation in pteridophytes?
Prothallus
Thallus
Cone
Rhizophore
44.
1.
(b)
Isotype
2.
(b)
Foliar bud, cauline bud
3.
(d)
Nodulose root
4.
(d)
Avicennia, Rhizophora
5.
(b)
Tuberous root
6.
(b)
Descending, positively geotrophic, negatively phototrophic
7.
(a)
8.
(a)
Proximal
9.
(a)
Multicarpellary, apocarpous ovary
10.
(c)
Syncarpous
11.
(a)
Fabaceae
12.
(c)
Bacteria - Crown gall
13.
(a)
14.
(d)
Methanobacterium
15.
(d)
Lipopolysaccharide is present in cell wall
16.
(c)
They contain DNA or RNA
17.
(d)
Hormones
18.
(d)
Isomerases
19.
(c)
Allosteric inhibition of hexokinase by glucose-6-phosphate
20.
(a)
Arginine
21.
(c)
| A | B | C | D |
| (iii) | (iv) | (i) | (ii) |
22.
(c)
While lipids can rarely flip-flop proteins cannot
23.
(d)
plastids
24.
(b)
rRNA
25.
(a)
Magnesium
26.
(a)
Ceropegia
27.
(c)
Allium cepa
28.
(c)
Serotaxonomy
29.
(d)
Evolutionary relationships
30.
(b)
Neotype
31.
(c)
Higher plants
32.
(b)
Synapsis
33.
(b)
Metaphase
34.
(c)
Pachytene
35.
(c)
36.
(d)
movement of chromosome towards pole
37.
(a)
Amount of DNA doubles in each cell
38.
(c)
Chromosomes will not segregate
39.
(d)
G0 Phase
40.
(c)
G1-S-G2-M
41.
(b)
42.
(c)
42
43.
(a)
Prothallus
44.
(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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