Solution-Class-11-Science-Biology-Chapter-3-Kingdom Plantae-Maharashtra Board

Kingdom Plantae

Class-11-Science-Biology-Chapter-3-Maharashtra Board

Solution

Question 1.

Choose correct option

A. Which is the dominant phase in Pteridophytes?

a. Capsule

b. Gametophyte

c. Sporophyte

d. Embryo

Answer :

B. The tallest living gymnosperm among the following is ..........

a. Sequoia sempervirens

b. Taxodium mucronatum

c. Zamia pygmaea

d. Ginkgo biloba

Answer :

C. In Bryophytes ..........

a. Sporophyte and gametophyte generations are independent

b. Sporophyte is partially dependent upon gametophyte

c. Gametophyte is dependent upon Sporophyte

d. Inconspicuous gametophyte

Answer :

D. A characteristic of Angiosperm is .........

a. Collateral vascular bundles

b. Radial vascular bundles

c. Seed formation

d. Double fertilization

Answer :

E. Angiosperms differ from Gymnosperms in having ..........

a. Vessels in wood

b. Mode of nutrition

c. Siphonogamy

d. Enclosed seed

Answer :

Question 2.

How you place the pea, jawar and fern at its proper systematic position? Draw a flow chart with example of.

Answer :

Question 3.

Complete the following table

Groups of algae Chlorophyceae Phaeophyceae Rhodophyceae
1. Stored food Starch    
2. Cell Wall   Cellulose and algin  
3. Major pigments     Chl- a, d and Phycoerythrin

 

Answer :

Question 4.

Differentiate between Dicotyledonae and Monocotyledonae based on the following characters

  1. Type of roots
  2. Venation in the leaves
  3. Symmetry of flower

Answer :

Question 5.

Answer the following questions

A. We observe that land becomes barren soon after monsoon. But in the next monsoon it flourishes again with varieties we observed in season earlier. How you think it takes place?

Answer :

B. Fern is a vascular plant. Yet it is not considered a Phanerogams. Why?

Answer :

C. Chlamydomonas is microscopic whereas Sargassum is macroscopic; both are algae. Which characters of these plants includes them in one group?

Answer :

Question 6.

Girth of a Maize plant does not increase over a period of time. Justify

Answer :

Question 7.

Radha observed a plant in rainy season on the compound wall of her school. The plant did not have true roots but rootlike structures were present. To which group the plant may belong?

Answer :

Question 8.

Draw neat labelled diagrams

A. Spirogyra

Answer :

B. Chlamydomonas

Answer :

C. Funaria

Answer :

D. Nephrolepis

Answer :

E. Haplontic and haplodiplontic life cycle

Answer :

Question 9.

Identify the plant groups on the basis of following features.

  1. Seed producing plants
  2. Spore producing plants
  3. Plant body undifferentiated into Root, Stem and leaves
  4. Plant need water for fertilization
  5. First vascular plants

Answer :

Practical / Project :

1. Study the Nephrolepis plant in detail.

Answer :

2. Study the coralloid roots, scale leaf and megasporophyll of cycas in detail.

Answer :

Question 10.

Observe the following diagram. Correct it and write the information in your words.

Answer :

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