Advertisements
Advertisements
Question
Multiple choice question.
How many molecules of ATP are required to fix one molecule of nitrogen?
Options
12
20
6
16
Advertisements
Solution
16
APPEARS IN
RELATED QUESTIONS
Which of the following hormones regulate stomatal colour?
Match the items in column A with those of column B.
| Column A | Column B | ||
| (a) | Auxin | (i) | apical dominance |
| (b) | Gibberellin | (ii) | cell-division |
| (c) | Cytokinin | (iii) | fruit ripening |
| (d) | Ethylene | (iv) | internodal elongation |
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.
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 |
Which hormone promotes the production of male flowers in Cucurbits?
Which of the following is a NOT a naturally occurring phytohormone?
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.
