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प्रश्न
Justify the following statements on the basis of external features
Flower is a modified shoot
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उत्तर
Flower is the reproductive part of the angiospermic plant and it is defined as the modified shoot because
(a) like shoot, flower develops from an axillary or rarely terminal bud.
(b) flowers may get modified into fleshy buds or bulbils,
(c) A transition from foliage leaves to floral leaves is found in Paeonia.
(d) Nymphaea shows transition from sepals to petals and petals to stamens,
(e) In Passiflora and Cleome long intemodes occur below gynoecium and stamens.
संबंधित प्रश्न
What is meant by modification of root? What type of modification of root is found in the
(a) Banyan tree
(b) Turnip
(c) Mangrove trees
Differentiate between Fibrous root and adventitious root
Draw and label the parts of regions of root.
Which part or zone of root is not correctly matched with its function?
Rearrange the following zones as seen in the root in vertical section and choose the correct option.
- Root hair zone
- Zone of meristems
- Rootcap zone
- Zone of maturation
- Zone of elongation
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?
In swampy areas like the Sunderbans in West Bengal, plants bear special kind of roots called ______.
In aquatic plants like Pistia and Eichhornia, leaves and roots are found near ______.
Name the body part modified for food storage in the following:
Sweet potato ______.
Name the body part modified for food storage in the following:
Asparagus ______.
Name the body part modified for food storage in the following:
Radish ______.
Name the body part modified for food storage in the following:
Dahlia ______.
Give two examples of roots that develop from different parts of the angiospermic plant other than the radicle.
Rhizome of ginger is like the roots of other plants that grows underground. Despite this fact ginger is a stem and not a root. Justify.
After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s)/tissue(s) like:
- Thymus
- Bone marrow
- Spleen
- Lymph nodes
- Peyer’s patches
Choose the correct answer from the options given below:
