8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard கணிதம் இயற்கணிதம் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard கணிதம் எண்கள் Important Questions And Answers Study Material - QB365 Set B
NEW8th Standard
Tamilnadu 8th Standard கணிதம் எண்கள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
Tamilnadu 8th Standard Social Science பொருளியல் - பொது மற்றும் தனியார் துறைகள் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science குடிமையியல் - நீதித்துறை Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science குடிமையியல் - பாதுகாப்பு மற்றும் வெளியுறவுக் கொள்கை Important Questions And Answers Study Material - QB365
Published on: 01/08/2019
Plant Kingdom
Download Tamil Nadu 8th Standard Science 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 Science Test1.
______ cures peptic ulcer
2.
Reticulate venation is present in ________ plants.
3.
The reserve food material of fungi are _______ and ______
4.
Monocotyledon seeds bear only _______cotyledon.
5.
Binomial Nomenclature was first introduced by ________
6.
______ is the earliest system of classification in plants.
Natural system of classification
Artificial system of classification
Phylogenetic system of classification
Modern system of classification
7.
Penicillin is an antibiotic, which is extracted from
Algae
Fungi
Bryophytes
Pteridophytes
8.
Binominal Nomenclature was first introduced in the year of
1970
1975
1978
1623
9.
The first vascular cryptogams in land plants are ________.
Bryophytes
Pteridophytes
Gymnosperm
Angiosperm
10.
Solanum trilobatum is the binomial name of Thoothuvalai. Here the word ‘Solanum’ refers to
Species
Genus
Class
Orders
11.
The dominant phase of the bryophytes is sporophytes.
12.
Pinus is a closed seeded plant.
13.
Artificial system of classification is based on the vegetative characters of the plant.
14.
In polypetalae, the petals are free.
15.
Red rot
16.
Lycopsida
17.
Pyricularia oryzae
18.
Araucaria bidwilli
19.
Penicillium chrysogenum
20.
Define SCP
21.
Write any two economic importance of fungi.
22.
Write any two characters of dicotyledons.
23.
Define Thallus.
24.
Write the differences between algae and fungi.
25.
Write a short note on natural system of classification
26.
Write differences between Gymnosperm and Angiosperm.
27.
Assertion (A): Gymnosperms have well developed vascular tissue.
Reason (R): The water-conducting tissue is trachieid food conducting tissue is sieve cell.
a. Both are wrong
b. A is correct: R explains A
c. Both are correct
d. A is correct: R does not explain A
28.
Assertion(A): Bryophytes are called Amphibians of the plant kingdom.
Reason(R): Bryophytes are land plants but they need water for the completion of their life cycle.
a) A correct R correct
b) A incorrect R correct
c) A and R correct R explain A
d) A and R incorrect
29.
Assertion (A): Penicillin is an antibiotic extracted from Penicillium notatum.
Reason (R): It can kill (or) inhibits the growth of the other micro organism.
1) Both A and R True, R explains A
2) A only correct, R doesn’t explain A
3) A True, R explains A
4) Both A and R False.
30.
Fragmentation: Spirogyra
:: Spore formation: __________
31.
Athelte's foot : Tinea pedis
Dandruff : _________
32.
Algae: Autotrophs
:: Fungi: __________
1.
( )
Aloe vera
2.
( )
Dicotyledonae
3.
( )
glycogen and oil
4.
( )
one
5.
( )
Gaspard Bauhin
6.
(b)
Artificial system of classification
7.
(b)
Fungi
8.
(d)
1623
9.
(b)
Pteridophytes
10.
(b)
Genus
11.
(b)
12.
(b)
13.
(b)
14.
(a)
15.
Collectotrichum falcatum
16.
Lycopodium
17.
Blast disease of paddy
18.
Ornamental plants
19.
Penicillin
20.
Some of the single cell algae and blue green algae are used to produce protein. Eg: Chlorella, Spiralina
21.
Antibiotic:
Penicillin, Neomycin, Gentamycin, Erythromycin are some antibiotics obtained from fungi which cure variable diseases.
Food:
Mushroom contains rich protein and minerals Common edible mushroom is Agaricus
22.
Characters of dicotyledons:
i) Seed has two cotyledons
ii) Plants have tap root system, leaves with reticulate venation
23.
The plant body of algae are called thallus. It means the plant body is not differentiated into root, stem and leaf.
24.
| S.No | Algae | Fungi |
| 1 | Algae are autotrophs | Fungi are heterotrophs |
| 2 | It has pigments | It has no pigments |
| 3 | Reserve food material is starch. | Reserve food materials are glycogen and oil |
| 4 | Some algae are Prokaryotic in nature | All are eukaryotic nature |
| 5 | lEg; Nostac, Anabenae | Eg: Agaricus |
25.
Natural system of classification:
i) In this system plants are classified on the basis of their morphological and reproductive characters of the seeded plants.
ii) This classification is widely used in many Herbaria and botanical gardens all over the world.
iii) Eg: Bentham and Hooker's classification
26.
| S.No | Gymnosperm | Angiosperm |
| 1 | Gymnosperms are naked seeded plants ovule is not enclosed by ovary | Angiosperms are closed seeded plants. Ovules are enclosed by ovary |
| 2 | Xylem contains tracheid | Xylem contains vessel, tracheid, xylem paienchyma and rylem fibre |
| 3 | Phloem contains sieve cell | Phloem contains sieve tubes phloem parenchyma, companion cells and phloem fibres. |
| 4 | They do not possess flowers | They are flowering plants |
| 5 | Cones are generally unisexual and rarely bisexual | Flowers are generally bisexual and rarely unisexual |
27.
b. A is correct: R explains A
28.
c) A and R correct R explain A
29.
1) Both A and R True, R explains A
30.
Chlamydomonos
31.
Microsporum furfur.
32.
Heterotrophs
8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - புவிப்படங்களைக் கற்றறிதல் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - கண்டங்களை ஆராய்தல் (ஆப்பிரிக்கா, ஆஸ்திரேலியா மற்றும் அண்டார்டிகா) Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science புவியியல் - தொழிலகங்கள் Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science வரலாறு - காலங்கள் தோறும் இந்தியப் பெண்களின் நிலை Important Questions And Answers Study Material - QB365
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
