NCERT Class 11 Biology Morphology of Flowering Plants

MORPHOLOGY OF FLOWERING PLANTS

VERY SHORT ANSWER TYPE QUESTIONS

1. Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of O2, root growth is restricted or completely stopped. How do the plants growing in marshlands or swamps obtain their O2 required for root respiration?

2. Write floral formula for a flower which, is bisexual; actinomorphic; sepals five, twisted aestivation, petals five; valvate aestivation; stamens six; ovary tricarpellary, syncarpous, superior, trilocular with axile placentation.

3. In Opuntia the stem is modified into a flattened green structure to perform the function of leaves (i.e., photosynthesis). Cite some other examples of modifications of plant parts for the purpose of photosynthesis.

4. In swampy areas like the Sunderbans in West Bengal, plants bear special kind of roots called _____________.

5. In aquatic plants like Pistia and Eichhornia, leaves and roots are found near _____________.

6. Reticulate and parallel venation are characteristic of _____________ and _____________ respectively.

7. Which parts in ginger and onion are edible?

8. In epigynous flower, ovary is situated below the _____________.

9. Add the missing floral organs of the given floral formula of Fabaceae.

10. Name the body part modified for food storage in the following

a. Carrot __________________________

b. Colocasia __________________________

c. Sweet potato __________________________

d. Asparagus __________________________

e. Radish __________________________

f. Potato __________________________

g. Dahlia __________________________

h. Turmeric __________________________

i. Gladiolus __________________________

j. Ginger __________________________

k. Portulaca __________________________

SHORT ANSWER TYPE QUESTIONS

1. Give two examples of roots that develop from different parts of the angiospermic plant other than the radicle.

2. The essential functions of roots are anchorage and absorption of water and minerals in the terrestrial plant. What functions are associated withthe roots of aquatic plants. How are roots of aquatic plants and terrestrial plants different?

3. Draw diagrams of a typical monocot and dicot leaves to show their venation pattern.

4. A typical angiosperm flower consists of four floral parts. Give the names of the floral parts and their arrangements sequentially.

5. Given below are a few floral formulae of some well known plants. Draw floral diagrams from these formulae.

Please refer to attached file for NCERT Class 11 Biology Morphology of Flowering Plants