Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

Explain the different kinds of modifications of stem.

Asked by Topperlearning User 11th July 2014, 12:59 PM
Answered by Expert
Answer:

Modification of stem:

1. Underground stem: Stores food. It also acts as organs of perennation to face conditions unfavourable for growth. Examples: Potato, turmeric

2. Stem tendrils: They develop from axillary buds. They are slender, spirally coiled and help plants to grow. Example: Pumpkins

3. Thorns: Axillary buds get modified into thorns. They are woody, straight and pointed.

They protect plants from animals. Example: Citrus

4. Photosynthetic stem: In arid regions, stems become flat and fleshy. They contain chlorophyll to carry out photosynthesis. Example: Euphorbia

5. Reproductive stems:

In some plants such as Jasmine, a slender lateral branch arises from the base of the main axis. After growing aerially for some time, it arches down to touch the ground.

In plants such as Chrysanthemum, the lateral branches originate from the basal and underground portion of the main stem. It grows horizontally beneath the soil and comes out obliquely upwards to give rise to leafy shoots.

Answered by Expert 11th July 2014, 2:59 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!