Advertisements
Advertisements
प्रश्न
Write full form of 2,4-D
Advertisements
उत्तर
2,4-Dichloro phenoxy acetic acid
APPEARS IN
संबंधित प्रश्न
Apical dominance phenomenon is caused by
Stems are
List five plant growth hormones and briefly describe their roles.
The tea plants are never allowed to grow lengthwise. This is done by cutting their apical buds, a process known as pruning. In this way, tea plants get a dense growth and easy yield. Answer the following question :
Name one plant hormone which inhibits the said phenomenon.
Multiple choice question.
Abscisic acid controls ______.
Gibberellins are synthesised from ______.
Why is ABA known as antitranspirant?
Name the tissue that transports hormones within the plant body?
Match the column A with B
| A | B | |
| i. | Epinasty of flower | GA3 |
| ii. | Natural auxin | NAA |
| iii. | Flowering in Litchi | IAA |
| iv. | Bolting of Beet | Ethylene |
A gardener wants to give bushy appearance to plants in our college campus.
- What should he do to achieve the same?
- Which property of phytohormones he must be aware of?
Write the name of______
- First hormone discovered in plants.
- Biological name of fungus from which Gibberellins were first isolated.
- The name given to the first cytokinin by Skoog and Miller.
The active ingredient of Agent Orange is an egual mixture of two phenoxy herbicides ____________.
Cause of degreening is ______.
In which part of plant does auxin synthesis occur?
Flowering in pineapple is promoted by ____________.
Match the following lists and select the correct option.
| List I | List II | ||
| i. | 2,4-D | a. | Promotes senescence and ripening of fruits |
| ii. | ABA | b. | DelaysJeaf senescence |
| iii. | Gibberellins | c. | Increases the length of the sugarcane stem |
| iv. | Ethylene | d. | Kills dicotyledonous weeds without affecting mature monocotyledonous plants |
| e. | Stimulates the closure of stomata |
The response by parts of the plant towards stimulus is called as ______.
