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प्रश्न
Write full form of 2,4-D
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उत्तर
2,4-Dichloro phenoxy acetic acid
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संबंधित प्रश्न
What is Parthenocarpy?
Auxins are abundantly produced in
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.
The figure given below shows the stages of ripening in a banana. Answer the question that follow:
Mention two characteristic features of this hormone.
Very Short Answer Question:
Which is the plant stress hormone?
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 |
Name the phytohormone related with the given phenomenon.
- Apical dominance
- Bolting of Cabbage
- Artificial ripening of fruit
- Acts as Anti-transpirant by closing stomata
Which hormone promotes the production of male flowers in Cucurbits?
Which of the following is a NOT a naturally occurring phytohormone?
The active ingredient of Agent Orange is an egual mixture of two phenoxy herbicides ____________.
Coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps.
What is the significance of the above experiment performed by Dr. F. Went?
Which among the following is the CORRECT statement regarding ethylene?
IAA stands for ______.
Name the plant hormones responsible for the following
- elongation of cells
- growth of stem
- promotion of cell division
- falling of senescent leaves.
Name the first hormone that was discovered in plant and its precursor.
Study the diagram given below and answer the questions that follow:
- Name the phenomenon depicted by the shoot in the above diagram.
- Which plant hormone plays an important role in the above movement?
- Complete and rewrite the given statement by filling in the correct terms:
Shoots show positive ______ whereas, roots show positive ______.
Differentiate between:
Stimulus and response
Bakane disease of rice is caused by ______.
