Plant Kingdom

Samacheer Book Back Questions And Answers For Science Standard 8 “Plant Kingdom“

I. Choose the best answer:
1. Solanum trilobatum is the binomial name of Thoothuvalai. The word ‘Solanum’ refers to
a) Species
b) Genus
c) Class
d) Orders

2. Floridian starch is a reserve food material of
a) Chloroplyceae
b) Phaeophyceae
c) Rhodophyceae
d) Cyanophyceae

3. An example for colonial form of algae is
a) Oscillatoria
b) Nostac
c) Volvox
d) Chlorella

4. One of the following is an edible mushroom
a) Polyporus
b) Agaricus
c) Pennicillium
d) Aspergillus

5. Plants that prevent soil erosion are
a) algae
b) fungi
c) bryophytes
d) pteridophytes

6. The first land plants are
a) bryophytes
b) pteridophytes
c) gymnosperm
d) angiosperm

7. The well-developed sporophytic plant body is seen in
a) bryophytes
b) pteridophytes
c) gymnosperms
d) angiosperms

8. Binominal Nomenclature was first introduced in the year
a) 1970
b) 1975
c) 1978
d) 1623

9. Penicillin is an antibiotic which is extracted from
a) algae
b) fungi
c) bryophytes
d) pteridophytes

II. Fill in the blanks:
1. The word ‘Taxonomy’ is derived from _____.
2. Binomial nomenclature was first introduced by _____.
3. The book ‘Genera Plantarum’ was published by _____ and _____.
4. Monocotyledon seed bears only _____ cotyledon.
5. Brown algae belongs to _____ class.
6. Agar Agar is obtained from _____ algae.
7. The reserve food material of fungi are _____ and _____.
8. The first true land plant is _____.
9. Xylem and phloem are absent in _____ plants.
10. Reticulate venation is present in _____ plants.

Answers:
1. Greek
2. Gaspard Bauhin
3. Bentham and Hooker
4. one
5. phaeophyceae
6. red
7. glycogen and oil.
8. pteridophyte
9. bryophyte
10. dicot

III. State true or false. If false, correct the statement:
1. In polypetalae, the petals are free.
2. Binomial name should contain more than two words.
3. Artificial system of classification is based on a few characters of the plant.
4. Cell wall of fungi is made up of chitin.
5. Pinus is a closed seeded plant.
6. All bryophytes are hydrophytes.
7. Dicotyledons have well developed characters than the gymnosperms.
8. Mosses are the well developed plant in bryophytes.
9. The dominant phase of the bryophytes is sporophyte.
10. The dominant phase of the pteridophyte is gametophytic phase

Answers:
1. True
2. False (Binomial name should contain two words)
3. False (Artificial system of classification is based on the morphological characters of the plant)
4. True
5. False (Pinus is a naked seeded plant)
6. False (All bryophytes are amphibians)
7. True
8. True
9. False (The dominant phase of the bryophytes is gametophyte)
10. True

IV. Match the following:
1. Cyanophyceae      A. Green algae
2. Chlorophyceae     B. Blue green algae
3. Phaeophyceae     C. Red algae
4. Rhodophyceae     D. Brown algae

Answers:
1. B
2. A
3. D
4. C

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